Fits 2006-2013 Chevrolet Corvette (Base, Grand Sport, Z06, ZR1, 427, and 427 Limited Edition Z06).

This Kooks Ultra X-Pipe provides a high-performance exhaust solution for the C6 Corvette, designed to improve scavenging and exhaust flow through a precision-engineered crossover. Constructed from 3-inch mandrel-bent T304 aircraft-quality stainless steel, this system offers maximum durability and corrosion resistance for both street and track applications. It includes integrated high-flow catalytic converters and is specifically designed to mate with the OEM connection points for a clean installation.

Each unit is handcrafted in the USA and dyno-tested to ensure optimal power delivery. The system maintains Kooks' commitment to high-grade materials and tight tolerances, providing a bolt-on upgrade that replaces more restrictive factory mid-sections.

• 3-inch diameter mandrel-bent T304 aircraft-quality stainless steel
• High-flow catalytic converters included
• Ultra X-Pipe crossover design for improved exhaust scavenging
• Designed for direct OEM connection
• Handcrafted in the USA
• Limited Lifetime Warranty to the original purchaser

Fits select 2006-2013 Chevrolet Corvette models, including Base, Grand Sport, Z06, and ZR1 (V8-6.2L / V8-7.0L).

Elevate the performance and acoustic profile of your C6 Corvette with the Kooks 3-inch Valved Axle-Back Exhaust system. Handcrafted in the USA from premium T304 aircraft-quality stainless steel, this system provides the durability required for both street and track environments. The integrated valving allows for adjustable exhaust notes, giving you control over the volume without sacrificing the high-flow characteristics of a full 3-inch mandrel-bent setup.

• 3-inch T304 stainless steel construction for maximum corrosion resistance and exhaust flow.
• Integrated valving system allows for sound profile adjustments.
• Hand-polished carbon fiber (CF) tips provide a modern, high-end aesthetic.
• Dyno-tested and race-proven design to optimize horsepower and torque.
• Direct-fit installation to factory-style mounting points.
• Manufactured in the USA by three generations of family leadership.
• Limited Lifetime Warranty for the original purchaser.
• Manufacturer Part Number: 21606750

Fits 2011-2014 Ford Mustang GT, Boss 302, and Shelby GT500 models. This Kooks OEM Cat-back exhaust system is engineered to optimize exhaust flow and maximize power for street and track applications.

Constructed from premium T304 aircraft-quality stainless steel, this system (MPN 11404200) is designed to withstand high-heat environments while resisting corrosion. Each system is handcrafted in the USA and undergoes dyno and race testing to ensure a precise fit and meaningful performance gains over the factory setup. The 2-3/4 inch to 3 inch mandrel-bent tubing provides a significant upgrade in exhaust volume and tone without sacrificing durability.

• Material: T304 Aircraft Quality Stainless Steel
• Inlet/Outlet: 2-3/4 inch x 3 inch
• Installation: Designed to fit with OEM components
• Origin: 100% Manufactured in the USA
• Manufacturer Part Number: 11404200
• Warranty: Limited Lifetime Warranty to the original purchaser

Fits 2021-2025 Ford F-150 models (V8-5.0L) including XL, XLT, Lariat, King Ranch, Platinum, SSV, STX, and Tremor.

Unlock the full performance potential of your 5.0L Coyote engine with this Kooks Header and Catted Connection Pipe system. Engineered to replace restrictive factory manifolds, these headers utilize 1-7/8 inch primaries to significantly improve exhaust scavenging and flow. This kit includes high-flow catted connection pipes, allowing for a complete bolt-on upgrade that balances increased horsepower and torque with responsible emissions management.

Constructed from premium T304 aircraft-quality stainless steel, this system is designed to withstand the high heat and harsh environments of both street and off-road use. Each set is handcrafted in the USA and dyno-tested to ensure maximum power gains across the RPM range. The system is finished with precision-engineered flanges for a leak-free seal against the cylinder head.

• Manufacturer Part Number: 1371H420
• Primary Tube Diameter: 1-7/8 inch
• Material: T304 Aircraft Quality Stainless Steel
• Includes high-flow catted connection pipes
• Handcrafted in the USA
• Limited lifetime warranty for the original purchaser
• Designed for 2021-2025 Ford F-150 5.0L V8 applications

Fits 2010-2015 Chevrolet Camaro SS and 2012-2014 Chevrolet Camaro ZL1.

The Kooks 3-inch OEM Style Cat-Back Exhaust system is engineered to provide maximum exhaust flow and a deep, aggressive tone for the fifth-generation Camaro. Constructed from mandrel-bent T304 aircraft-quality stainless steel, this system replaces the factory exhaust from the catalytic converters back, utilizing OEM-style connections for a straightforward installation that maintains factory-style mounting. Every Kooks system is dyno and race-tested to ensure optimized power delivery and a precise fit for high-performance street and track applications.

• 3-inch diameter mandrel-bent tubing for optimized exhaust flow
• Fabricated from premium T304 aircraft-quality stainless steel
• OEM-style connection points for simplified installation
• Dyno and race-tested for maximum power gains
• Handcrafted in the USA
• Manufacturer Part Number: 22504200
• Limited lifetime warranty to the original purchaser

Ensure a leak-free exhaust joint with the Kooks 2-3/4" (2.75-inch) Stainless Steel Swivel Seal Clamp. Specifically engineered for Torca-style ball and socket connections, this clamp provides the high-tension sealing required to secure exhaust components without the need for traditional gaskets. It is an essential hardware component for maintaining exhaust integrity in high-vibration street, race, and off-road environments.

Each clamp is handcrafted in the USA from premium T304 aircraft-quality stainless steel, offering superior resistance to heat and corrosion. Designed to simplify installation and provide a reliable, adjustable seal, this hardware is dyno and race-tested to meet the standards of professional racing organizations like NHRA and NASCAR.

• Designed for 2-3/4" Torca-style ball and socket exhaust connections
• Constructed from T304 aircraft-quality stainless steel for maximum durability
• Swivel-capable design allows for easier exhaust alignment during installation
• Handcrafted in the USA by Kooks Headers and Exhaust
• Limited lifetime warranty for the original purchaser
• Manufacturer Part Number: JI-93-0101

Fits 2010-2015 Chevrolet Camaro SS and ZL1 (LS3 / L99 / LSA).

Kooks long tube headers are engineered to maximize exhaust scavenging and increase horsepower for the fifth-generation Camaro. These headers feature 1-7/8-inch primaries and 3-inch collectors, providing a significant flow upgrade over restrictive factory manifolds. Handcrafted in the USA using T304 aircraft-quality stainless steel, this system is built to withstand the rigors of street and track use.

This kit includes Kooks high-flow catalytic converters, allowing for improved performance while maintaining a complete exhaust path. Every set is dyno and race-tested to ensure precise fitment and optimal power gains across the RPM range.

• Primary Tube Diameter: 1-7/8 inches
• Collector Diameter: 3 inches
• Material: T304 Aircraft Quality Stainless Steel
• Includes high-flow catted connection pipes
• Handcrafted in the USA
• Limited Lifetime Warranty to the original purchaser
• Manufacturer Part Number: 2250H420

Fits all 1997-2004 Chevrolet Corvette models, including Base, Z06, 50th Anniversary, and Pace Car editions.

This Kooks Headers and Exhaust kit is engineered to maximize exhaust flow and power for the C5 Corvette platform. Featuring 1-7/8 inch primaries and 3 inch collectors, this system replaces restrictive factory manifolds with a high-performance long-tube design and a matching catted X-pipe. Each component is handcrafted in the USA using T304 aircraft-quality stainless steel for superior corrosion resistance and durability under extreme heat.

• 1-7/8" primary tubes with 3" collectors
• Includes high-flow catted X-pipe for improved scavenging and sound
• Constructed from T304 aircraft-quality stainless steel
• Hand-built in the USA
• Dyno and race-tested for proven performance gains
• Backed by a Limited Lifetime Warranty to the original purchaser
• Manufacturer Part Number: 2150H420

Fits 2020-2025 Chevrolet Corvette Stingray, Z06, and E-Ray (6.2L).

Manage radiant heat and protect sensitive engine bay components with Kooks Heat Shield Blankets. These blankets are specifically engineered to fit Kooks Ultra Green Catted Connect Pipes on the C8 Corvette platform. By insulating the high-temperature catalytic converters, these shields help maintain lower ambient temperatures within the mid-engine compartment, protecting nearby wiring, hoses, and body panels from heat soak during spirited driving or track use.

• Precision fit for Kooks Ultra Green Catted Connect Pipes
• Helps reduce engine bay temperatures and improves thermal management
• Handcrafted in the USA for maximum durability
• Essential for high-performance street, race, and off-road applications
• Sold as a pair (driver and passenger side)
• Manufacturer Part Number: 218033B2

Fits 2015-2020 Ford F-150 models including King Ranch, Lariat, Platinum, SSV, XL, and XLT. This complete exhaust system is engineered for maximum power gains and superior durability on the street or off-road.

This Kooks kit features 1-7/8 inch primaries and 3 inch collectors, significantly improving exhaust scavenging and airflow compared to factory manifolds. The included Y-pipe is equipped with Kooks' high-flow GREEN catalytic converters, designed to withstand the heat of high-performance engines while maintaining exhaust efficiency. Handcrafted in the USA from T304 aircraft-quality stainless steel, this system is built to resist corrosion and provide a precise fit.

• Manufacturer Part Number: 1361H430
• 1-7/8" x 3" Stainless Steel Headers
• Includes Kooks GREEN High-Flow Catted Y-Pipe
• Constructed from premium T304 Stainless Steel
• Dyno and race-tested for proven performance
• Includes all necessary hardware for installation
• Limited Lifetime Warranty to the original purchaser

Fits select 2015-2026 Ford Mustang GT, GT Premium, Bullitt, Mach 1, and Dark Horse models (V8-5.0L).

Improve the exhaust flow and power output of your S550 or S650 Mustang with this Kooks 1-7/8-inch header and catted connection pipe system. Handcrafted in the USA, these headers are engineered from T304 aircraft-quality stainless steel to withstand the rigors of both street and track use. Each system is dyno and race-tested to ensure maximum performance gains over the restrictive factory manifold.

• 1-7/8 inch primary tubes for optimized exhaust scavenging
• T304 aircraft-quality stainless steel construction
• Includes catted connection pipes for a complete bolt-on solution
• Handcrafted in the USA
• Manufacturer Part Number: 1151H422
• Backed by a Limited Lifetime Warranty for the original purchaser

Fits 2020-2026 Chevrolet Corvette Stingray, E-Ray, and Z06.

Enhance the exhaust flow and performance of your C8 with Kooks Super Street 1-7/8in Stainless Headers. Engineered for a precise fit and maximum power delivery, these headers are handcrafted from T304 aircraft-quality stainless steel to withstand high-performance driving while providing superior corrosion resistance. Every Kooks system is dyno and race tested to ensure optimal efficiency and durability.

These Super Street headers provide a high-flow solution that replaces restrictive factory manifolds. Built in the USA by a three-generation family-owned company, these headers deliver the engineering quality expected from a 50-year leader in performance exhaust technology. This system is designed to bolt up accurately while maximizing the power potential of the mid-engine Corvette platform.

• 1-7/8 inch primary tubes for optimized exhaust velocity
• Handcrafted from T304 aircraft-quality stainless steel
• Dyno and race-tested design for maximum performance
• Precision fitment for straightforward installation
• Limited lifetime warranty to the original purchaser
• 100% manufactured in the USA
• Manufacturer Part Number: 21801400

Fits select 2005-2023 Chrysler 300, Dodge Challenger, Charger, Durango, Magnum, Ram 1500, and Jeep Grand Cherokee/Wrangler (6.1L / 6.4L).

Ensure a leak-free seal between your cylinder heads and exhaust system with these Kooks Cometic Multi-Layer Stainless Steel (MLS) exhaust gaskets. Engineered specifically for the high-performance demands of 6.1L and 6.4L Hemi engines, these gaskets utilize multiple layers of stainless steel to provide superior resilience against extreme temperatures and high exhaust pressures. They are the ideal choice when installing Kooks headers or performing maintenance on high-output street and track vehicles.

• Manufacturer Part Number: SS-755872
• Material: Multi-Layer Stainless Steel (MLS)
• Engine Compatibility: 6.1L and 6.4L Hemi
• Design: Specifically engineered for maximum power and durability
• Origin: 100% Manufactured in the USA
• Warranty: Limited Lifetime Warranty to the original purchaser

Ensure a high-performance seal for your engine build with Kooks Cometic MLS Exhaust Gaskets, specifically engineered for GM LSX cylinder heads. These gaskets utilize Multi-Layer Steel (MLS) technology to provide superior durability and sealing integrity under the extreme heat and pressure typical of high-output street, race, and off-road applications.

Fits select 1967-2017 GM models from Buick, Cadillac, Chevrolet, GMC, Oldsmobile, and Pontiac equipped with LSX cylinder heads.

• Cometic Multi-Layer Steel (MLS) construction for maximum sealing reliability
• Specifically designed for GM LSX cylinder head exhaust ports
• Dyno and race-tested to handle high-performance exhaust flow
• Handcrafted in the USA by Kooks Headers and Exhaust
• Manufacturer Part Number: SS-755818
• Includes a Limited Lifetime Warranty to the original purchaser

Fits select 2011-2024 Ford F-150 and Mustang (5.0L).

Ensure a leak-free seal for your high-performance Coyote engine with these Kooks Cometic Multi-Layer Steel (MLS) exhaust gaskets. Engineered specifically for the Ford 5.0L 4V engine, these gaskets are designed to withstand the extreme temperatures and pressures of high-performance street and racing applications. Unlike standard single-layer gaskets, the Cometic MLS construction utilizes multiple layers of stainless steel to provide superior recovery and seal integrity, effectively managing thermal expansion and hardware movement between the head and header flange.

• Multi-Layer Steel (MLS) construction for maximum durability and sealing
• Designed specifically for the Ford 5.0L 4V Coyote engine
• Replaces prone-to-leak factory or single-layer gaskets
• Ideal for use with Kooks headers or high-performance exhaust systems
• Manufactured in the USA
• Manufacturer Part Number: SS-755392

This Kooks Stafford Spec universal round muffler is engineered for high-performance exhaust applications across street, race, and off-road environments. Handcrafted in the USA from polished T304 aircraft-quality stainless steel, this muffler is designed to withstand extreme temperatures and corrosive gases while providing the flow characteristics required for maximum power.

As part of the Kooks Stafford Spec line, this component is dyno and race-tested to ensure it meets the rigorous standards of professional racing. The compact 10-inch body length allows for versatile fitment in custom exhaust configurations where space is at a premium.

• Series: Stafford Spec
• Design: 3.5 in Round Muffler
• Body Length: 10 in
• Material: Polished T304 Stainless Steel
• Construction: Hand-built and race-tested
• Warranty: Limited Lifetime Warranty to the original purchaser
• Origin: 100% Manufactured in the USA
• Part Number: R35-35-10

Upgrade your custom exhaust system with the Kooks Universal 3-inch Round Muffler. Engineered for street, race, and off-road applications, this 14-inch long muffler is designed to maximize exhaust flow and power. Part of a 50-year legacy in high-performance exhaust development, every Kooks muffler is handcrafted in the USA and dyno-tested to ensure it meets professional racing standards.

• Material: Manufactured from T304 aircraft-quality stainless steel for maximum durability and corrosion resistance.
• Finish: Polished stainless steel exterior for a high-quality, show-ready appearance.
• Fitment: Universal 3-inch round design for custom exhaust fabrication and versatile chassis placement.
• Testing: Every Kooks product is dyno and race-tested to ensure optimal performance gains.
• Dimensions: 3-inch inlet/outlet diameter with a 14-inch body length.
• Warranty: Includes a limited lifetime warranty to the original purchaser.
• Manufacturer Part Number: R300-14

The Kooks R300-10 is a high-performance universal round muffler engineered for custom exhaust applications where maximum flow and durability are paramount. Designed for street, race, and off-road builds, this muffler features a high-flow internal design to reduce backpressure and optimize exhaust scavenging.

Constructed from heavy-duty T304 aircraft-quality stainless steel, the R300-10 is built to withstand extreme temperatures and resist corrosion over time. The polished finish ensures a professional, show-ready appearance. As a universal component, this muffler is designed to be integrated into custom 3-inch exhaust systems by professional fabricators.

• Manufacturer Part Number: R300-10
• Inlet/Outlet Diameter: 3 inches
• Body Length: 10 inches
• Body Shape: Round
• Material: T304 Stainless Steel
• Finish: Polished
• Handcrafted in the USA
• Limited Lifetime Warranty to the original purchaser

Fits select 1969-2014 Ford Mustang models including Shelby GT500, Mach 1, and SVT Cobra R (5.4L / 5.8L).

Kooks M.L.A. (Multi-Layer Aluminum) exhaust gaskets are engineered to provide a high-integrity, leak-free seal between the cylinder head and the header flange. Designed to withstand the extreme heat and pressure of high-performance Ford 4V modular and vintage engines, these gaskets replace worn or inferior OE seals to ensure maximum exhaust velocity and performance. Every gasket is handcrafted in the USA and extensively dyno-tested to meet the standards of professional racing and street performance.

• Multi-Layer Aluminum (M.L.A.) construction for superior heat resistance and sealing
• Engineered specifically for Ford 5.4L and 5.8L 4-valve engine configurations
• Handcrafted in the USA using premium materials
• Dyno and race-proven for reliable performance under heavy load
• Limited lifetime warranty for the original purchaser
• Manufacturer Part Number: PY-8034-AL

Fits 2005-2010 Ford Mustang GT, Bullitt, and Shelby GT (4.6L).

Kooks M.L.A. (Multi-Layer Aluminum) exhaust gaskets provide a reliable, high-temperature seal between your 4.6L 3-valve cylinder heads and headers. Engineered for the rigors of high-performance street and racing applications, these gaskets are designed to prevent exhaust leaks that can lead to power loss and inaccurate O2 sensor readings. Proudly handcrafted in the USA, they offer the durability and precision fitment expected from an industry leader in high-performance exhaust technology.

• M.L.A. multi-layer construction for optimal compression and recovery.
• Specifically engineered for Ford 4.6L 3V Modular engines.
• Compatible with Kooks headers and standard exhaust mounting points.
• Handcrafted in the USA by Kooks Headers and Exhaust.
• Manufacturer Part Number: PY-8023-A-AL

Ensure a high-integrity, leak-free seal for your Small Block Ford exhaust system with Kooks Multi-Layer Aluminum (MLA) header gaskets. Engineered to withstand the extreme temperatures and pressures of high-performance street and racing applications, these gaskets provide superior crush resistance and thermal stability compared to standard composite materials.

These gaskets feature a precise 3-inch inline bolt pattern specific to SBF cylinder heads. The multi-layer aluminum construction allows the gasket to conform to minor surface irregularities on the header flange and cylinder head face, maintaining a positive seal even under high-vibration conditions. Built for durability, they are handcrafted in the USA to the exacting standards Kooks has maintained since 1962.

• Material: Multi-Layer Aluminum (MLA)
• Bolt Pattern: 3.00-inch Inline
• Engine Fitment: Small Block Ford (SBF)
• Manufacturing: Handcrafted in the USA
• Part Number: PY-8013-AL

The Kooks KO300-12 Universal Oval Muffler is engineered for high-performance street and racing applications where flow efficiency and structural durability are critical. Handcrafted in the USA from premium T304 stainless steel, this muffler is designed to withstand extreme exhaust temperatures and corrosive conditions. Its compact 4" x 8" x 12" oval body offers versatile fitment for custom exhaust builds, providing a performance-oriented sound without sacrificing ground clearance.

• Configuration: 3" Center Inlet / 3" Center Outlet
• Body Dimensions: 4" Height x 8" Width x 12" Length
• Material: Heavy-duty T304 stainless steel construction
• Performance: Dyno and race tested to ensure maximum power output and scavenging
• Manufacturing: 100% Hand-built in the USA
• Warranty: Limited Lifetime Warranty for the original purchaser
• Part Number: KO300-12

This Kooks universal oval muffler is engineered for high-performance street, race, and off-road applications. Featuring a 2.5-inch center inlet and center outlet, this muffler provides a streamlined exhaust path designed to reduce backpressure and maximize power output. The 4" x 8" x 12" oval body offers a compact profile for versatile installation in custom exhaust configurations.

Constructed from T304 aircraft-quality stainless steel, the KO250-12 is built to withstand extreme heat and corrosion. Every Kooks muffler is handcrafted in the USA and undergoes rigorous dyno and race testing to ensure it meets the performance standards required by championship-winning teams. This muffler provides the durability and signature tone Kooks is known for, backed by a limited lifetime warranty.

• Inlet/Outlet Diameter: 2.5-inch (2-1/2")
• Configuration: Center Inlet / Center Outlet
• Body Dimensions: 4" H x 8" W x 12" L
• Material: T304 Aircraft-Quality Stainless Steel
• Finish: Natural Stainless Steel
• Handcrafted in the USA
• Limited lifetime warranty for the original purchaser
• Manufacturer Part Number: KO250-12

The Kooks Headers and Exhaust 3-inch universal exhaust clamp (JI-TAS300) provides a heavy-duty, leak-free connection for high-performance exhaust systems. Engineered for reliability in street, race, and off-road environments, this clamp is an essential component for custom exhaust fabrication or securing existing 3-inch OD piping sections.

• Premium Construction: Manufactured from aircraft-quality T304 stainless steel for maximum corrosion resistance and durability in high-heat applications.
• Universal Fitment: Designed for 3-inch exhaust tubing, compatible with Kooks systems and a wide range of custom aftermarket setups.
• USA-Made Quality: 100% handcrafted in the USA, drawing on over 50 years of racing heritage and dyno-tested performance.
• Simple Installation: Engineered for a precise fit that simplifies assembly and ensures a secure hold under mechanical stress.
• Manufacturer Support: Part number JI-TAS300 is backed by a Kooks limited lifetime warranty for the original purchaser.

Secure your exhaust system with a Kooks 3-inch Torca Ball Clamp, designed for high-performance applications where a reliable, leak-free connection is critical. This universal clamp utilizes a ball-and-socket design that allows for slight angular adjustments during installation, making it an essential component for custom exhaust routing and precise alignment on street or race vehicles.

• Connection Type: Torca ball-style swivel clamp
• Diameter: 3 inches (76.2mm)
• Material: Handcrafted from T304 aircraft-quality stainless steel for maximum durability and corrosion resistance
• Origin: 100% manufactured in the USA
• Testing: Dyno and race tested to ensure performance under extreme conditions
• Manufacturer Part Number: JI-K61003
• Warranty: Limited lifetime warranty to the original purchaser

Built by Kooks Headers and Exhaust, this clamp provides the clamping force needed to prevent leaks and exhaust movement without the risk of pipe deformation common with U-bolt style clamps.

The Kooks H.O. Green High Output Catalytic Converter is engineered for high-performance street and racing applications where exhaust flow and durability are critical. This 3-inch converter is handcrafted in the USA using T304 aircraft-quality stainless steel to provide maximum corrosion resistance and structural integrity under high heat conditions.

• Construction: Heavy-duty T304 stainless steel body for long-lasting performance.
• Flow Dynamics: Designed specifically to maintain maximum power output and exhaust velocity.
• Rigorous Testing: Every Kooks converter design is dyno and race tested to ensure it meets high-performance standards.
• Inlet/Outlet: 3-inch diameter for compatibility with high-flow exhaust systems.
• Manufacturing: 100% manufactured in the USA by a family-owned team with over 50 years of exhaust expertise.
• Warranty: Includes a limited lifetime warranty for the original purchaser.
• Part Number: GE-90150

This Kooks Headers and Exhaust GREEN Series universal catalytic converter is engineered for high-performance applications where flow and durability are critical. Designed for custom exhaust fabrication, this catalyst features a 2.5-inch diameter and a compact 7.5-inch overall length, allowing for versatile placement in tight chassis configurations. Each unit is handcrafted in the USA using T304 aircraft-quality stainless steel to ensure long-term resistance to heat and corrosion.

• Inlet/Outlet Diameter: 2.5 inches
• Overall Length: 7.5 inches
• Construction: T304 Aircraft Quality Stainless Steel
• Series: Kooks GREEN Catalyst
• Configuration: Universal Fit
• Tested: Dyno and race tested for maximum power delivery
• Origin: 100% Manufactured in the USA
• Manufacturer Part Number: GE-90148

Ideal for street, race, and off-road applications, the GREEN Series catalyst is the result of over 50 years of exhaust leadership. This component is designed to replace restrictive OE converters or integrate into a high-flow custom system while maintaining the structural integrity required for high-heat environments.

Kooks GREEN Series high-flow catalytic converters are engineered for high-performance applications that require efficient emissions control without sacrificing exhaust velocity. These universal catalysts are specifically designed to handle the increased heat and flow of modified street and racing engines, providing a durable solution for custom exhaust fabrication.

• Inlet/Outlet Diameter: 3 inches
• Overall Length: 7.5 inches
• Substrate: 400-cell high-flow design
• Material: Hand-built from T304 aircraft-quality stainless steel
• Construction: Dyno and race tested for maximum power output
• Origin: 100% manufactured in the USA
• Manufacturer Part Number: GE-90147

Each unit features T304 stainless steel construction for superior corrosion resistance and long-term durability. These universal converters are intended for custom installations and may require cutting and welding to fit your specific exhaust system.

Fits 2014-2019 Chevrolet Corvette Stingray, Z06, Grand Sport, and ZR1.

The Kooks EX685-Z O2 Sensor Extension Harness is an essential solution for maintaining proper electrical connections when installing aftermarket long-tube headers. Moving the O2 sensor bungs further downstream requires additional wire length to reach the factory harness; these extensions provide a reliable, plug-and-play connection that eliminates the need for risky cutting or splicing of your vehicle's sensitive wiring.

• Designed specifically for the C7 Corvette chassis to bridge the gap between the relocated sensor bung and the factory connector.
• Handcrafted in the USA with high-grade wiring and automotive-spec connectors for maximum durability and signal integrity.
• Engineered to withstand the high-heat environment of performance exhaust systems.
• Preserves the integrity of the EFI system by ensuring accurate oxygen sensor readings.
• Manufacturer Part Number: EX685-Z

Fits 2005-2013 Chevrolet Corvette Base, Z06, ZR1, Grand Sport, and 427 Limited Edition models.

The Kooks Universal O2 Sensor Extension Harness is designed for enthusiasts installing long-tube headers or custom exhaust systems where the factory oxygen sensor bungs have been relocated. This harness provides the necessary length to reach these new positions without the need to cut or splice your vehicle's factory wiring, ensuring a clean and reliable installation.

• Direct plug-and-play connection with factory-style connectors
• Eliminates wiring modifications during exhaust upgrades
• Handcrafted in the USA by Kooks Headers and Exhaust
• Dyno and race-tested for long-term durability
• Ideal for street, race, and off-road applications
• Manufacturer Part Number: EX682-Z

Each harness is built to maintain signal integrity for the engine management system, even under the high-heat conditions common in high-performance exhaust environments. Kooks products are backed by a limited lifetime warranty to the original purchaser.