DEI Radiator Relief Heater Hotter (MPN 40206) is a specialized chemical additive formulated to accelerate heat transfer from the engine to the antifreeze. By improving thermal efficiency in cold climates, this treatment allows the vehicle's HVAC system to reach operating temperature up to 50% faster, providing quicker window defrosting and interior warmth even in sub-zero conditions.

• Reduces engine warm-up time by up to 50%
• Accelerates window defrosting and ice melting for less scraping
• Compatible with all types of antifreeze and aluminum radiators
• Helps reduce cold-start engine wear by reaching operating temperatures sooner
• Performance remains stable and will not dissipate over time

For installation, pour the 16oz bottle directly into the radiator. The solution must cycle and mix thoroughly with the existing coolant before becoming fully effective. Note that the vehicle's cooling system and thermostat must be in proper working order for Heater Hotter to function as intended.

The DEI Exhaust Wrap Kit (MPN 10112) is a comprehensive solution for insulating headers or motorcycle pipes to manage radiant heat. This kit includes two 50-foot rolls of 2-inch wide tan exhaust wrap, engineered to handle the extreme temperatures generated by high-performance exhaust systems. By containing heat within the pipes, this wrap helps significantly lower under-hood temperatures and protects sensitive engine bay components from thermal damage.

To ensure a long-lasting finish, the kit includes an aerosol can of Aluminum HT Silicone Coating. This spray seals the wrap material, protecting it from moisture, oil, road grime, and abrasions while providing a professional metallic appearance. For secure mounting, the kit provides 12 stainless steel locking ties and a specialized installation tool to ensure the wrap remains tight and stationary through thousands of heat cycles.

• Two 2 in. x 50 ft. rolls of Tan Exhaust Wrap
• One aerosol can of Aluminum HT Silicone Coating spray
• Eight 8 in. Stainless Steel Locking Ties
• Four 14 in. Stainless Steel Locking Ties
• Free Locking Tie Tool included for secure installation
• Includes installation instructions and hazardous materials info sheet
• Packaged in a retail clamshell
• Manufacturer Part Number: 10112

DEI Radiator Relief (40200) is a high-performance coolant additive designed to reduce engine operating temperatures by up to 30°F. By improving heat transfer efficiency through the radiator, this formula helps prevent overheating during extreme use and reduces the mechanical wear associated with high thermal loads. It is formulated to be compatible with all water-cooled engines and works with all types of anti-freeze mixtures and alloys, including aluminum, cast iron, copper, and brass.

Beyond temperature control, Radiator Relief acts as a comprehensive system treatment. It includes a corrosion inhibitor to balance acidic effects and prevent electrolytic damage, along with an anti-foaming agent to maintain consistent cooling performance. The 100% biodegradable, non-toxic formula also helps reduce pre-existing scale and mineral deposits while maintaining stable pH levels to prevent core damage over time.

• Reduces engine operating temperatures by up to 30°F
• Prevents electrolytic and chemical corrosion
• Includes anti-foaming agents and scale inhibitors
• Maintains stable pH levels to protect radiator cores
• Compatible with all anti-freeze and coolant additives
• Safe for all engine alloys (Aluminum, Cast Iron, Copper, Brass)
• 100% biodegradable, non-corrosive, and non-toxic
• Recommended dosage: 1 oz per quart of coolant
• Manufacturer Part Number: 40200

DEI Radiator Relief Chill Charger is a specialized additive engineered specifically for water-to-air intercooler systems in high-performance turbocharged and supercharged applications. By maximizing thermal transfer, this formula effectively lowers air intake temperatures (IATs) and reduces liquid heat soak, helping your forced induction system maintain peak performance even under heavy load.

Beyond cooling efficiency, Chill Charger provides critical protection for the intercooler core. The non-toxic, environmentally friendly chemistry prevents mineral buildup, electrolysis, and internal corrosion that can degrade cooling performance or lead to component failure over time.

• Maximizes thermal transfer to lower air intake temperatures
• Reduces liquid heat soak in turbo and supercharger systems
• Protects against core corrosion, electrolysis, and harmful mineral deposits
• Non-toxic and environmentally friendly formula
• Easy application: simply add to intercooler water reservoir
• Manufacturer Part Number: 40208
• Container Size: 16oz

The DEI Boom Mat Under Carpet (UC) layer is a high-performance secondary acoustic and thermal barrier designed to minimize road noise and heat transfer into the vehicle interior. This dual-layer material combines a flexible 1 lb/sq ft mass loaded vinyl (MLV) barrier with an industrial-grade acoustical marine foam to isolate the cabin from engine roar, exhaust heat, and chassis vibration.

Measuring 3/8" thick, this insulation provides a 5.6 dB noise reduction over leading competitors and serves as a critical second stage in a comprehensive sound-damping strategy. It is engineered for durability, resisting mold and mildew growth even in moisture-prone floorpan areas. For optimal results, DEI recommends installing Boom Mat UC over a vibration-damping base layer using mechanical fasteners or high-temp spray adhesive (MPN 010490) on floorboards, firewalls, and overhead surfaces.

• Dimensions: 48 in. x 54 in. (18 sq. ft.)
• Thickness: 3/8 in.
• Construction: 1 lb/sq ft Mass Loaded Barrier top layer with marine-grade foam bottom layer
• Acoustic Performance: 5.6 dB reduction over leading competitors
• Thermal Insulation: Blocks radiant heat from engines and exhaust systems
• Resistance: Mold and mildew resistant
• Manufacturer Part Number: 50101

The DEI Titanium Pipe Shield provides high-performance spot heat protection for exhaust systems across automotive, marine, powersports, and industrial applications. Utilizing proprietary LR fiber technology derived from pulverized lava rock, this shield is engineered to outperform traditional Mylar-backed glass fiber alternatives. While standard shields often fail or flake at 900°F, DEI’s Titanium series withstands continuous radiant heat up to 1350°F.

• Advanced Materials: Features a two-ply construction with a rugged woven basalt outer layer and a high-temperature 89% silica inner fabric.
• Air Gap Technology: The unique rivet-based standoff bracket design creates a cooling air gap between the shield and the pipe for superior heat dissipation.
• Component Protection: Shields brake lines, floorboards, fuel tanks, and transmissions from damaging radiant heat levels.
• Installation Ready: Includes 3.5-inch stainless steel clamps suitable for exhaust pipes with a diameter up to 3 inches.

Whether you are protecting a motorcycle exhaust, a diesel stack, or a performance car's floorboards, the DEI 10453 offers a durable, re-positionable solution for thermal management. Part number 10453.

• Temperature Rating: Up to 1350°F
• Dimensions: 4 in. x 8 in.
• Outer Material: Woven Basalt
• Inner Material: 89% Silica Fabric
• Manufacturer Part Number: 10453

The DEI Floor & Tunnel Shield II (50520) provides critical thermal protection for vehicle components and interiors exposed to extreme temperatures. This 42in x 48in shield is engineered to block heat transfer on firewalls, transmission tunnels, floorboards, and fuel cells, preventing damage to electronics and painted surfaces while improving occupant comfort.

Constructed with an embossed 10 mil aluminum face bonded to a 1/8-inch composite glass-fiber core, this barrier is rated to withstand direct heat up to 1750°F. At only 3/16-inch total thickness, the material is highly flexible and can be easily trimmed and shaped for custom fits in minimal-clearance areas. This version is designed without adhesive backing, requiring mechanical fasteners for a secure, permanent installation.

• Dimensions: 42in x 48in sheet
• Construction: 10 mil dimpled aluminum face with glass-fiber backing
• Total Thickness: 3/16-inch (approx. 4.75mm)
• Heat Rating: Withstands up to 1750°F direct heat
• Mounting: Non-adhesive; requires mechanical fasteners (not included)
• Compatibility: Suitable for metal, aluminum, carbon fiber, and plastic surfaces
• Manufacturer Part Number: 50520

Note: The aluminum side must face the heat source. Do not apply directly to exhaust components.

Fits 2024-2025 Polaris XPEDITION ADV 5 Northstar, Premium, and Ultimate models.

The Polaris XPEDITION ADV 5 cabin is prone to significant engine noise and vibration transmitted through the chassis. The DEI Roof Insulation and Sound Control Kit (902416) provides a targeted solution for the roof area, utilizing precision CNC-cut D-Mat material to improve acoustic and thermal comfort. These panels fit seamlessly inside the factory front and rear headliners, maintaining a clean OE-style appearance while delivering professional-grade insulation.

Specifically designed for owners who have already modified their Xpedition and need to address the remaining roof area, this kit is an essential component for achieving a more refined ride. For owners requiring a comprehensive full-vehicle system, use DEI part number 902413.

• Precision CNC-cut for an exact fit inside front and rear headliner sections
• Utilizes high-performance DEI D-Mat for superior sound deadening and thermal insulation
• Reduces engine noise and stabilizes interior cabin temperatures
• Maintains a clean, factory-finished look after installation
• Proudly made in the USA
• Manufacturer Part Number: 902416

Fits 2024-2025 Polaris XPEDITION XP 5 Northstar, Premium, and Ultimate models.

High cabin noise levels can detract from the utility and comfort of the Polaris Xpedition XP5. The DEI Sound Control Roof Insulation Kit (MPN 902417) is a comprehensive solution designed to significantly reduce engine resonance and vibration. This kit utilizes DEI D-Mat material, which provides both effective sound deadening and thermal insulation to maintain a more stable cabin temperature in various weather conditions.

Every piece is precision CNC-cut to ensure a seamless fit tucked inside the factory front and rear headliners, maintaining a clean, factory-finished appearance. By mitigating NVH (noise, vibration, and harshness), this kit allows for easier conversation and a more refined driving experience without compromising interior aesthetics.

• Precision CNC-cut D-Mat for exact fitment within OE headliners
• Reduces engine noise and cabin vibration for improved passenger comfort
• Provides thermal insulation to help regulate interior temperatures
• Durable, high-quality construction with a clean factory finish
• Proudly made in the USA
• Manufacturer Part Number: 902417

Manage extreme under-vehicle heat with the DEI Black Floor and Tunnel Shield II. This versatile thermal barrier is designed to block engine and exhaust heat from entering the vehicle interior, protecting sensitive components and improving cabin comfort. The proprietary high-temperature black coating provides a clean, stealthy finish while the flexible construction allows it to be easily shaped to firewalls, transmission tunnels, and floor pans.

• Advanced Thermal Protection: Withstands direct continuous temperatures up to 1750°F and adhesive-side temperatures up to 450°F.
• Premium Construction: Built with an embossed 10 mil aluminum face bonded to a 1/8 in. composite glass-fiber core for maximum heat reflection and insulation.
• Easy Installation: Features an aggressive high-temperature pressure-sensitive adhesive backing for a simple peel-and-stick application to almost any surface.
• Low Profile: At only 3/16 in. thick, it requires minimal clearance and provides excellent noise dampening against road and engine vibration.

Technical Specifications:
Part Number: 50552
Dimensions: 21 in. x 48 in. (7.0 sq ft)
Thickness: 3/16 in. (approx. 4.76mm)
Face Material: 10 mil Embossed Aluminum
Core Material: 1/8 in. Composite Glass-Fiber
Max Temperature: 1750°F (Radiant), 450°F (Adhesive Side)

Note: Do not apply directly to exhaust components. Bending in a metal brake or making sharp bends may cause the black coating to crack, though thermal performance will remain unaffected.

The DEI Black Floor and Tunnel Shield II provides a high-performance solution for blocking engine and exhaust heat in tight spaces. Designed for firewalls, transmission tunnels, and floor pans, this shield features a proprietary high-temperature black coating that maintains a stealthy appearance while protecting vehicle interiors and sensitive components from thermal damage.

Constructed with an embossed 10 mil aluminum face bonded to a 1/8-inch composite glass-fiber core, the material provides a durable 3/16-inch thick barrier. The aggressive pressure-sensitive adhesive backing ensures a secure bond to almost any surface, including fiberglass and metal, provided it is not applied directly to exhaust components.

• Heat Resistance: Withstands direct temperatures up to 1750°F; adhesive holds past 450°F
• Dimensions: 42 in. x 48 in. (14.0 sq. ft.)
• Thickness: 3/16 in. (includes 10 mil aluminum face and 1/8 in. glass-fiber core)
• Material: Proprietary black coated aluminum with composite glass-fiber core
• Installation: Easy to trim, shape, and apply with peel-and-stick backing
• Protection: Acts as a barrier against radiant heat and unwanted road, tire, and engine noise
• Part Number: 50549

Note: Do not apply directly to exhaust components. Use caution when making sharp bends or using a metal brake, as this may crack the black coating, though it will not impact thermal performance.

Fits 1997-2005 Chevrolet Corvette C5 models, including Base, Z06, 50th Anniversary, and Pace Car editions.

Excessive heat transfer through the center console is a common issue for C5 Corvette owners. The DEI Trans Tunnel Plate Heat Shield (MPN 50530) provides a high-performance solution to block exhaust heat from entering the cabin, significantly improving interior comfort. This precision die-cut shield is designed to apply directly to the transmission tunnel reinforcement plate, acting as a thermal barrier that protects the interior components and passengers from radiant heat.

Constructed with specialized materials to survive harsh under-vehicle conditions, this shield features an aggressive adhesive backing that stays secure even in high-heat environments. Installation is straightforward and does not require the removal of the transmission tunnel plate; simply peel the backing, align, and press into place.

• Outer material withstands up to 1750°F of direct heat
• Aggressive adhesive backing holds past 450°F
• Precision die-cut for a perfect fit on C5 reinforcement plates
• Extremely lightweight and resistant to wind, water, and road debris
• Easy peel-and-stick installation with no hardware removal required
• Part Number: 50530

Fits 1966-1967 Chevrolet Chevy II Nova. This DEI Under Hood Insulation Kit is engineered to replace worn, contaminated factory liners with high-performance heat and sound damping material. Manufactured from DEI's specialized Black Under Hood material, this kit effectively shields your hood's exterior paint from engine heat and chemical exposure while significantly reducing engine noise for a quieter passenger cabin.

Each kit is CNC-cut for precise fitment against the factory hood structure. The panels feature an aggressive pressure-sensitive adhesive backing for a straightforward peel-and-stick installation without the need for messy spray adhesives or specialized tools.

• Fits 1966-1967 Chevrolet Chevy II Nova models
• Material: Specialized Black Under Hood™ thermal and acoustic insulation
• Finish: Durable black textured surface
• Installation: Self-adhesive peel-and-stick backing
• Precision CNC-cut for an exact fit to factory hood recesses
• Protects exterior paint finishes from thermal damage
• Manufacturer Part Number: 50093

The DEI Heat Screen (MPN 10401) is a professional-grade thermal barrier designed to protect vehicle interiors, fuel tanks, and body panels from excessive engine and exhaust heat. Measuring 36 in. x 40 in. with a slim 0.060 in. profile, this matting is constructed from high-temperature resistant fiberglass bonded to a superior reflective aluminized surface.

This flexible matting is easily trimmed to size, making it ideal for shielding floorboards under carpeting or protecting painted surfaces from heat-induced blistering. While it can withstand significant temperatures, it is designed for use as a secondary barrier and should never be applied directly to exhaust components.

• Temperature Rating: Reflects up to 2000°F radiant heat and withstands 1200°F direct heat
• Dimensions: 36 in. x 40 in.
• Thickness: 0.060 in.
• Construction: Aluminized mylar surface bonded to fiberglass matting
• Installation: Can be secured using mechanical fasteners (screws/rivets) or high-temp spray adhesives
• Applications: Floorboards, body panels, fuel tank shielding, and under-carpet insulation
• Manufacturer Part Number: 10401

The DEI 10384 Versa-Shield provides a professional-grade solution to heat soak, a common cause of premature starter and component failure. This universal mini-shield is designed to reflect intense under-hood heat, ensuring reliable engine starts and protecting sensitive mechanical parts from thermal fatigue.

Constructed with an aluminized heat-reflective surface backed by a high-temperature glass fiber insulation barrier, the Versa-Shield is engineered to withstand up to 500°F of direct heat and reflect radiant heat up to 2000°F. The 5.25-inch by 16.5-inch material is easily trimmed to size, making it an ideal choice for protecting not only starters but also master cylinders, fuel pumps, distributors, and cool cans.

• Thermal Protection: Reflects up to 2000°F radiant heat and withstands 500°F direct heat.
• Rugged Construction: Aluminized material with a high-temp rated glass fiber insulation barrier.
• Easy Installation: Integrated hook-and-loop edge closure allows for installation without removing the component in most applications.
• Universal Fit: Can be trimmed to length to fit specific components; dimensions 5.25" W x 16.5" L.
• MPN: 10384

DEI Glass Fiber Exhaust Wrap (10137) is engineered to mitigate extreme underhood temperatures and optimize exhaust scavenging. By insulating headers and downpipes, this 2-inch wide wrap retains heat within the exhaust system, decreasing gas density and increasing flow velocity for improved performance. Reducing radiant heat effectively lowers intake air temperatures and protects sensitive engine components from thermal fatigue.

This tan wrap features integrated installation guide lines to ensure even overlapping for a professional finish. For maximum durability and protection against road grime or fluid spills, it is highly recommended to seal the wrap with DEI HT Silicone Coating spray after installation.

• Dimensions: 2in x 25ft
• Direct Heat Resistance: 1200°F
• Radiant Heat Resistance: 2000°F
• Reduces underhood temperatures by approximately 50%
• Includes integrated installation guide lines
• Manufacturer Part Number: 10137

Note: Wrapping catalytic converters or flex-pipes is not recommended. Exhaust wrap is not designed to be moved or removed once it has been heat-cycled, as the glass fibers lose their initial flexibility.

DEI Floor and Tunnel Shield II (95503) provides a professional-grade thermal barrier designed to block extreme heat from intruding into vehicle interiors and damaging sensitive components. This shielding is engineered for high-temperature environments, limiting thermal transfer across firewalls, transmission tunnels, floor boards, and fuel cells. At only 3/16-inch thick, it is the ideal solution for minimal clearance areas where traditional insulation is too bulky.

The shield is constructed with a rugged, embossed 10 mil aluminum face bonded to a 1/8-inch composite glass-fiber core. This combination reflects radiant heat while providing effective sound deadening against road and engine noise. The high-temperature pressure-sensitive adhesive backing ensures a permanent bond to metal, aluminum, carbon fiber, and plastic surfaces, allowing for a clean, "do-it-once" installation.

• Direct Heat Resistance: Withstands temperatures up to 1750°F
• Adhesive Rating: High-temp backing remains secure past 450°F
• Material Construction: 10 mil dimpled aluminum face with a 1/8" glass-fiber core
• Dimensions: 10 in. x 10 in. (0.83 sq. ft.)
• Total Thickness: 3/16 in.
• Application: Flexible and easy to trim; conforms to complex floor pan and tunnel shapes
• Part Number: 95503

Installation Note: Do not apply Floor and Tunnel Shield II directly to exhaust components. The aluminum side must always face the heat source.

Protect critical fuel, transmission, and brake lines from extreme heat and abrasion with the DEI Fire Sleeve (MPN 94472). This thermal insulator is engineered from a high-temperature braided fiberglass sleeve heavily coated with 100% iron oxide silicone rubber. It provides a rugged, fireproof barrier that prevents vapor lock and fluid breakdown while shielding electrical harnesses from heat damage.

• Temperature Resistance: Rated for 500°F (260°C) continuous exposure and up to 2000°F (1093°C) of intermittent radiant heat.
• Durable Construction: Features a heavy silicone coating for superior resistance to oil, chemicals, and mechanical abrasion.
• Sizing & Fitment: 5/8-inch (0.625") internal diameter is specifically sized for 6AN and 8AN lines; the material can stretch 1/16" to 1/8" to accommodate existing fittings.
• Safety & Maintenance: Provides burn protection for technicians during under-hood repairs and maintenance.
• Dimensions: 100-foot bulk spool for large projects and shop use.

Ideal for bundling hoses and electrical wiring, this fireproof solution ensures long-term reliability in harsh automotive and industrial environments.

The DEI Fire Sleeve (MPN 94470) provides essential thermal protection and abrasion resistance for fuel, transmission, and brake lines, as well as critical electrical wiring. Designed for high-heat environments, this sleeve is constructed from braided fiberglass material and heavily coated with 100% iron oxide silicone rubber to deflect radiant heat and withstand direct contact.

• Temperature Resistance: Withstands up to 500°F (260°C) of continuous heat and 2000°F (1093°C) of intermittent heat.
• Construction: High-temperature braided glass sleeve with a heavy silicone rubber coating for maximum insulation.
• Versatile Application: Ideal for bundling hoses and protecting lines from heat soak and physical wear under the hood.
• Sizing Specs: 3/8-inch (0.375") Inner Diameter (ID) provided in a 100-foot bulk spool.

The 3/8" ID is specifically suited for 3AN, 4AN, and 6AN lines (6AN provides a tight fit). The material offers approximately 1/16" to 1/8" of stretch, which aids in installation over lines with existing fittings. Please note that Fire Tape is not included and is recommended for sealing the ends of the sleeve.

The DEI Heat Shroud (93487) provides a professional-grade solution for protecting critical lines, hoses, and wiring from extreme radiant heat and physical abrasion. This sleeving is constructed from 19 oz high-temperature heat-treated glass fiber insulation bonded to a durable aluminized outer facing. The integrated hook and loop closure design allows for rapid installation on existing lines without the need to disconnect hardware or disassemble complex wiring harnesses.

• Dimensions: 2-1/2 inches (63.5mm) inside diameter by 50 feet long
• Heat Resistance: Reflects up to 90% of radiant heat; withstands up to 2000°F radiant heat
• Material: 19 oz glass fiber insulation with a reflective aluminum outer layer
• Construction: Reinforced with aramid thread for superior flame-retardant performance and durability
• Closure: Heavy-duty hook and loop edge for secure, tool-free installation
• Protection: Fireproof and resistant to oil, dirt, and road grime
• MPN: 93487

This flexible sleeving easily conforms to tight bends and is designed to keep lines cool and functional in high-heat environments. Note: DEI Heat Shroud is designed for radiant heat protection; do not apply directly to exhaust components.

The DEI Heat Sheath (MPN 93420) provides critical thermal and abrasion protection for wires, cables, and hoses. This 50ft spool features a 1-1/2" inner diameter designed to slide over components, shielding them from extreme heat, chemical spills, and road grime. The sleeving is constructed from 19 oz high-temperature glass fiber insulation bonded to an aluminized outer layer that reflects damaging radiant heat.

• Thermal Performance: Withstands up to 500°F direct heat and up to 2000°F radiant heat.
• Rugged Construction: Reinforced with aramid thread for enhanced abrasion resistance and flame-retardant durability.
• Flexible Design: Pliable material easily navigates tight bends in automotive plumbing and wiring harnesses.
• Installation: Quick slide-on application (requires unhooking lines/hoses); easily trimmed to exact required length.
• Specifications: 1.5 inch (1-1/2") I.D. x 50ft length; manufactured in the USA.

Installation Note: Do not apply this product directly to exhaust components. Designed for use on lines, hoses, and wiring looms needing heat reflection.

The DEI Heat Sheath provides critical thermal protection and abrasion resistance for lines, hoses, and wiring looms. Designed to slide over components during assembly or maintenance, this sleeving features a 19 oz high-temperature glass fiber core bonded to a reflective aluminized outer layer. It is precision-engineered to withstand direct, continuous heat up to 500°F and radiant heat up to 2000°F.

• Engineered Construction: Reinforced with aramid thread for superior durability and flame-retardant performance in high-heat environments.
• Chemical Resistance: Protects against oil spills, dirt, grease, and road grime while remaining pliable for tight bends.
• Installation: Slide-over design requires disconnecting one end of the line or hose; can be easily trimmed to exact length.
• Specifications: 1-inch Inside Diameter (I.D.) supplied on a 50-foot bulk spool.
• Origin: Manufactured in the USA.

Note: Manufacturer Part Number 93419. Do not apply this product directly to exhaust components or headers.

Protect critical lines, hoses, and wiring from extreme thermal damage and abrasion with DEI Heat Sheath (93418). This slip-over protection is constructed from a 19 oz high-temperature glass fiber insulation bonded to an aluminized surface to reflect radiant heat. It is precision-engineered to provide a pliable, durable barrier against heat, chemicals, oil spills, and road grime, ensuring your vehicle’s vital systems remain flexible and functional in harsh environments.

• Thermal Protection: Withstands up to 500°F direct heat and reflects up to 2000°F radiant heat.
• Construction: 19 oz high-temperature glass fiber insulation reinforced with aramid thread for superior abrasion resistance and flame-retardant performance.
• Dimensions: 1/2 inch Internal Diameter (I.D.) provided in a 50-foot bulk spool for custom-length applications.
• Installation: Slip-over design requires disconnecting one end of the line or hose for installation.
• Manufacturing: Proudly manufactured in the USA.

Note: Do not apply this product directly to exhaust components. Designed for use on wires, cables, and hoses.

Protect critical automotive components from damaging radiant heat with the DEI Heat Sheath. This high-temperature sleeving is engineered from a foil-faced fabric bonded to a heat-resistant base material, capable of reflecting over 90% of radiant heat. With a 2-inch inside diameter, it is specifically sized for large-diameter bundles, radiator hoses, and heavy-duty cabling.

This bulk 50-foot spool (MPN 93406) is an essential solution for race cars, off-road builds, and restoration projects where thermal management is vital for reliability. The tubular, non-split design provides seamless 360-degree protection, though it must be slid over components during the assembly or plumbing process.

• Manufacturer Part Number: 93406
• Inside Diameter: 2 inches (50.8mm)
• Length: 50-foot bulk spool
• Material: Aluminized heat-reflective fabric
• Protects wiring looms, fuel lines, and hydraulic hoses from radiant heat soak
• Reduces vapor lock and prevents heat-related electrical failures

The DEI Heat Sheath (93405) provides critical thermal protection for wires, cables, and hoses in high-heat automotive environments. This 50ft bulk spool is constructed from 19 oz high-temperature heat-treated glass fiber bonded to an aluminized outer facing, designed to reflect damaging radiant heat and maintain the integrity of vital components.

• Thermal Performance: Reflects up to 90% of radiant heat and withstands radiant temperatures up to 2,000°F.
• Premium Materials: Engineered with 19 oz glass fiber insulation and finished with a durable, fireproof aluminum layer reinforced with aramid thread.
• Versatile Application: Adjustable diameter accommodates lines from 1/2-inch to 1-1/4-inch; material remains flexible enough for tight bends.
• Environmental Durability: Provides a barrier against oil, dirt, road grime, and surface abrasions to extend the lifespan of plumbing and wiring.
• Bulk Spool: 50ft length allows for custom-trimmed protection across multiple systems without the waste of pre-cut sections.

Note: For radiant heat protection only. Do not apply directly to exhaust components or high-heat surfaces without an air gap.

DEI Heat Sheath (MPN 93404) provides professional-grade protection for lines, hoses, and wiring harnesses prone to failure from extreme thermal exposure and abrasion. Engineered to slide over components, this sleeving is constructed from 19 oz high-temperature glass fiber insulation bonded to a heat-reflective aluminized surface. The material is reinforced with aramid thread for superior durability and flame-retardant performance in high-heat environments.

• Heat Performance: Withstands up to 500°F of direct heat and 2000°F of radiant heat.
• Construction: 19 oz glass fiber bonded to a durable aluminum outer layer for fluid and grime resistance.
• Flexibility: Pliable design allows for easy routing through tight bends without compromising heat reflection.
• Installation: Slide-over design requires unhooking the line or hose; easily trimmed to the exact length needed.
• Dimensions: 1-1/4 inch (1.25") Internal Diameter on a 50ft bulk spool.

Note: Heat Sheath is designed for proximity protection; do not apply directly to exhaust components. Proudly manufactured in the USA.

Protect critical lines, hoses, and wiring from thermal fatigue and abrasion with the DEI Heat Sheath. This 50ft bulk spool is ideal for professional shop use or large-scale automotive plumbing projects where custom-length thermal protection is required. Designed as a slide-over sleeve, it features a high-temperature fabric bonded to an aluminized surface to reflect radiant heat away from sensitive components.

• Temperature Rating: Withstands up to 500°F (260°C) direct heat and up to 2000°F (1093°C) radiant heat.
• Construction: Pliable aluminized material bonded to high-temp fabric; fireproof and resistant to chemicals, oil, grease, and road grime.
• Installation: Designed to slide over wires, cables, or hoses before they are connected; highly pliable for routing through tight bends.
• Dimensions: 3/4-inch Internal Diameter (I.D.) x 50-foot continuous spool.
• Safety Note: Do not apply this product directly to exhaust components.
• Manufacturer Part Number: 93403

Protect critical fluid lines and electrical harnesses from extreme engine bay temperatures and abrasion with the DEI Fire Sleeve. This 1-inch I.D. thermal insulator is designed to prevent vapor lock in fuel lines, protect brake and transmission fluids from heat soak, and shield wiring looms from melting or failure. Constructed from high-temperature braided glass fiber and coated in 100% iron oxide silicone rubber, it provides a rugged, fireproof barrier capable of withstanding the harshest under-hood environments.

• Temperature Rating: Withstands 500°F (260°C) continuous heat and up to 2000°F (1093°C) intermittent heat.
• Fitment Compatibility: Sized for 10AN, 12AN, and 16AN lines (16AN is a tight fit); also suitable for 5/8" and 3/4" heater hoses.
• Material: Heavy-duty braided glass fiber interior with a thick silicone rubber outer coating for oil, chemical, and abrasion resistance.
• Flexibility: Material allows for 1/16" to 1/8" of stretch, aiding installation over existing fittings.
• Safety: Provides burn protection for technicians during maintenance and prevents line failure in high-performance or heavy-duty applications.
• Specifications: 1" I.D. x 25ft length; Manufacturer Part Number: 92474.

Note: Fire Tape (sold separately) is recommended for sealing the ends of the sleeve to prevent fluid wicking and ensure a professional finish.

The DEI Fire Sleeve (92473) provides a professional-grade fireproof solution to protect critical fuel, transmission, and brake lines from extreme heat and abrasions. Constructed from high-temperature braided fiberglass and heavily coated with 100% iron oxide silicone rubber, this 3/4" I.D. sleeve provides reliable thermal insulation for sensitive components in the harshest engine bay environments.

• Thermal Performance: Designed to withstand 500°F (260°C) continuous exposure and up to 2000°F (1093°C) of intermittent heat.
• Rugged Construction: The silicone-coated glass material is resistant to chemicals, moisture, and abrasion while offering burn protection for technicians during maintenance.
• Installation Flexibility: The sleeve material allows for 1/16" to 1/8" of stretch, making it easier to slide over existing fittings and connectors.
• Applications: Suitable for bundling wiring harnesses and protecting oil, brake, and transmission lines from radiant heat.

This 25-foot spool allows for custom-length trimming to fit specific automotive or industrial plumbing needs.

• Brand: DEI (Design Engineering, Inc.)
• Part Number: 92473
• Inside Diameter: 0.75 in (3/4")
• Length: 25 ft
• Material: Silicone-coated braided glass

DEI Fire Sleeve (92472) provides high-temperature insulation and abrasion protection for critical fuel, transmission, and brake lines, as well as electrical wiring harnesses. This 25-foot spool features a 5/8-inch (0.625") inner diameter designed to bundle lines or protect individual hoses in high-heat environments. It is an effective solution for preventing vapor lock and protecting components from oil or fluid soak.

Constructed from braided fiberglass material and heavily coated with 100% iron oxide silicone rubber, this sleeve is engineered to withstand extreme thermal exposure. The 5/8-inch sizing is optimized for -6AN and -8AN lines. The material allows for approximately 1/16" to 1/8" of stretch, which helps during installation over pre-existing fittings.

• Continuous Heat Resistance: 500°F
• Intermittent Heat Resistance: 2000°F
• Inside Diameter: 5/8 in. (0.625 in.)
• Length: 25 ft. spool
• Material: Braided glass with iron oxide silicone rubber coating
• Recommended Fitment: Fits -6AN and -8AN braided lines
• Function: Heat insulation, abrasion resistance, and burn protection
• Manufacturer Part Number: 92472

Note: Fire Tape for sealing ends is not included with this spool.