Fits 2017-2019 Chevrolet Silverado and GMC Sierra 2500/3500 HD (6.6L L5P Duramax).

The Fleece Performance High Flow Intake Horn is a direct-replacement performance upgrade for the restrictive factory intake runner. While the stock plastic component features a narrow 2.4-inch diameter, this Fleece Performance version utilizes a larger 3.3-inch cast aluminum bore to significantly reduce intake restriction and improve turbocharger efficiency. This design optimization can result in gains of up to 10 additional rear-wheel horsepower (RWHP).

Engineered for a seamless installation, this intake horn bolts directly to the factory mounting points and requires no aftermarket tuning or modifications to the vehicle. The kit includes a billet aluminum fitting for a secure PCV connection and a square-cut O-ring to ensure a leak-free seal under boost.

• Replaces restrictive 2.4-inch plastic factory intake runner
• Large 3.3-inch diameter cast aluminum construction
• Gains up to 10 RWHP without additional tuning
• Direct bolt-on fitment using factory mounting points
• Includes billet aluminum PCV fitting and mounting hardware
• Manufacturer Part Number: FPE-L5P-INTAKEHORN

Kit Contents: Cast aluminum intake horn, square-cut O-ring, billet aluminum PCV fitting, and M8x1.25 mounting hardware.

Fits select 2020-2024 Chevrolet Silverado and GMC Sierra 2500 HD/3500 HD models equipped with the 6.6L L5P Duramax engine.

The Fleece Performance L5P fuel filter upgrade kit allows you to convert from the restrictive factory cartridge-style filter to a high-capacity spin-on canister style filter. This upgrade provides increased filtration capacity, allows for longer service intervals, and expands your choice of replacement filter options. The kit features a precision-machined, anodized billet aluminum fuel filter base designed to retain the original equipment (OE) sandwich-style heating element, ensuring consistent performance in cold weather conditions.

Designed for a direct-fit installation, the new filter base mounts in the factory location and utilizes quick-disconnect fittings for an OE-quality finish. This system replaces GM part numbers 23149526, 84711317, and 84996837.

• Converts factory cartridge filter to a spin-on canister style
• Anodized billet aluminum base retains the OE heating element
• Maintains factory mounting location and fuel line connections
• Includes Donaldson fuel filter and water separator
• Cross-Reference: Replaces GM Part # 23149526, 84711317, 84996837
• U.S. Patent No. D978,917
• Manufacturer Part Number: FPE-L5P-FFBA-1719

Kit Includes:

• Donaldson fuel filter and water separator
• Filter base with integral mounting
• Distribution filter block / filter coupler
• Quick-disconnect fittings

Fits select 2001-2004 Chevrolet Silverado and GMC Sierra 2500 HD/3500 models (6.6L LB7 Duramax).

Maximize your LB7's airflow with the Fleece Performance High Flow Intake Horn. This cast aluminum upgrade replaces the restrictive factory inlet, reducing turbulence and allowing your turbocharger to breathe more efficiently. In back-to-back testing, this simple bolt-on modification delivered a proven increase of 15 horsepower, making it one of the most cost-effective performance upgrades available for the early Duramax platform.

Built for durability and precision fitment, this kit includes a new mounting gasket to ensure a leak-free seal against the turbocharger inlet. It is designed to work with factory mounting points for a straightforward installation process.

• Manufacturer Part Number: FPE-INTAKEHORN
• Material: Cast aluminum
• Horsepower Gain: +15 hp (dyno verified)
• Engine Compatibility: 6.6L LB7 Duramax
• Includes: High flow intake horn and replacement gasket

Fits 1994-2002 Dodge Ram 2500 and 3500 (Base models).

The Fleece Performance Cheetah Series HX35 turbocharger is a stock-appearing, drop-in replacement designed for owners who demand increased reliability and power without the complexity of an aftermarket install kit. This unit bolts directly to the factory mounting points, providing a seamless upgrade for your Cummins-powered Dodge Ram.

Equipped with an exclusive 63mm Forged Milled Wheel (FMW) compressor and high-strength Inconel turbine wheel technology, this turbocharger delivers exceptionally smooth throttle response and substantial top-end performance. Whether you are replacing a worn OE unit or building for more power, the Cheetah series provides the airflow necessary to support significant modifications.

• Manufacturer Part Number: FPE-HX35-63-FMW
• Compressor Wheel: 63mm FMW (Forged Milled Wheel)
• Turbine Wheel: Inconel technology for heat resistance and durability
• Power Support: Capable of supporting modifications up to 650 RWHP
• Installation: Direct bolt-on, drop-in replacement for factory HX35
• Design: Stock-appearing for a clean engine bay aesthetic

Protect your engine and turbocharger from water, debris, and environmental contaminants with the Fleece Performance 7-inch hood stack cover. Designed for competition and street trucks utilizing a hood-exit exhaust, this cover is an essential accessory to prevent moisture from sitting in the exhaust housing when the vehicle is parked.

• Fits 7-inch diameter exhaust stacks
• 45-degree angle cut for a precise fit on angled stack tips
• Keeps rain, snow, and debris out of the turbocharger system
• Durable construction designed for outdoor exposure
• Manufacturer Part Number: FPE-HSC-7-45

Protect your engine and turbocharger from rain, moisture, and debris with the Fleece Performance 6-inch 45-degree Hood Stack Cover. This essential accessory is designed for competition and street-performance vehicles utilizing a hood-exit exhaust system, ensuring that the elements stay out of your downpipe and turbo housing when the engine is not running.

• Diameter: 6 Inches
• Angle: 45 Degrees
• Application: Universal for 6-inch hood-exit exhaust stacks
• Purpose: Prevents water and contamination from entering the exhaust system
• Manufacturer Part Number: FPE-HSC-6-45

Protect your engine and turbocharger from environmental damage with the Fleece Performance 5" Straight Cut Hood Stack Cover (FPE-HSC-5-S). This cover is an essential component for any diesel truck utilizing a hood-exit exhaust, serving as a reliable barrier against rain, snow, and debris when the vehicle is stationary or in storage.

• Universal Fitment: Designed to fit standard 5-inch (5") outer diameter straight-cut hood stacks.
• Critical Protection: Prevents moisture from entering the exhaust system, which can lead to turbocharger corrosion and manifold contamination.
• Straight Cut Profile: Engineered for a clean, flush fit on non-angled exhaust tips.
• Manufacturer Part Number: FPE-HSC-5-S

Protect your engine and turbocharger from the elements with the Fleece Performance 5-inch 45-degree Hood Stack Cover. Designed specifically for diesel trucks equipped with a hood-exit exhaust, this cover prevents rainwater, debris, and contaminants from entering the open exhaust system while the vehicle is stationary or in storage.

Leaving a hood stack exposed can lead to water pooling in the turbocharger housing or, in extreme cases, entering the cylinders, which can cause catastrophic internal damage and corrosion. This cover is engineered for a precise fit on 5-inch diameter stacks with a 45-degree cut, providing a reliable barrier that is easy to install and remove between runs or shows.

• Fits 5-inch diameter exhaust stacks
• Precision 45-degree angled design
• Prevents water intrusion and internal engine damage
• Essential for hood-exit exhaust systems
• Manufacturer Part Number: FPE-HSC-5-45

Fits select 1994-2022 Dodge Ram 2500 and 3500 trucks equipped with Cummins diesel engines and Holset turbochargers.

Ensure consistent lubrication and prevent leaks with the Fleece Performance Holset Turbo Oil Feed Line Adapter Fitting. This precision-engineered component is designed as a direct replacement for the factory oil feed line adapter, providing a secure connection between the oil supply and the turbocharger bearing housing. It is a critical replacement part for maintaining the reliability of your Cummins engine's forced induction system.

• Direct replacement for Cummins P/N: 4940183
• Compatible with all Holset turbochargers from 1994 to 2022 model years
• Restores factory-spec oil flow and sealing
• Engineered for a precise fit on Dodge Ram 2500 and 3500 platforms
• Manufacturer Part Number: FPE-HOL-FD-FIT

Fits select 2001-2016 Dodge/RAM Cummins, GMC/Chevrolet Duramax, and 2014-2015 Chevrolet Cruze (6.7L / 6.6L).

The Fleece Performance FPE-HAR-RP-EXT provides 18 inches of additional length for harness routing on rail pressure and MAP sensors. This extension is engineered to solve clearance issues and accommodate custom wire management without sacrificing signal integrity. Each harness is produced in-house using fully automated wire cutting and terminal crimping processes to ensure consistent, reliable connections that meet or exceed factory standards.

• Length: 18 inches
• Manufacturing: In-house automated wire cutting and terminal crimping
• Connectors: OE-style terminals for secure fitment
• Application: Rail pressure and MAP sensor extensions
• MPN: FPE-HAR-RP-EXT

Vehicle Compatibility:

• 2003-2012 5.9L/6.7L Cummins (Rail Pressure Sensor)
• 2001-2016 6.6L Duramax (Rail Pressure Sensor)
• 2011-2016 6.6L Duramax (MAP Sensor)
• 2014-2015 Chevrolet Cruze (Rail Pressure Sensor)

Fits select 2007-2020 Dodge and Ram 2500/3500 trucks with the 6.7L Cummins engine.

The Fleece Performance Multiuse Sensor Pigtail 3 provides a reliable, high-quality solution for damaged or corroded factory electrical connectors. This 6-inch pigtail is specifically engineered to restore proper signal transmission to critical engine sensors, including the Exhaust Gas Pressure (EBP) sensor on 6.7L Ram and Cummins ISX applications. Built with durable wire leads and a secure locking connector, it eliminates the common connectivity issues caused by heat and vibration in the engine bay.

• Wire Lead Length: 6 inches
• Application Compatibility: Exhaust Gas Pressure Sensor (Part No. 4928594)
• Cross Reference: Replaces W094230
• Durability: Engineered for extreme engine bay conditions
• Engine Applications: 6.7L Cummins / Cummins ISX
• MPN: FPE-HAR-MU-PT-3

Fits 2015-2019 Chevrolet Silverado and GMC Sierra 2500 HD/3500 HD models equipped with the Allison 1000 or 2000 series transmission.

Restore reliable signal communication to your transmission with the Fleece Performance transmission input speed sensor pigtail. Designed as a direct replacement for the factory connector on 2015-2019 GM heavy-duty trucks, this pigtail addresses intermittent connectivity or harness damage that can lead to shifting issues and limp mode. To ensure maximum reliability, Fleece utilizes an in-house automated manufacturing process for precision wire cutting and terminal crimping.

• Engineered specifically for Allison 1000/2000 Series transmissions
• Mates to GM / AC Delco input speed sensor part number 24276402
• Includes two heat-sealable butt-style connectors for a secure, weather-resistant repair
• Fully automated terminal crimping for consistent electrical contact
• Manufacturer Part Number: FPE-HAR-MU-PT-14

Fits select 2017-2022 GM 2500/3500, 4500/5500, and 2017 Cruze models (1.4L).

The Fleece Performance FPE-HAR-MU-PT-1 is a high-quality replacement sensor connector designed to restore electrical integrity where factory harnesses often fail. This 4.5-inch pigtail allows for a clean, secure splice into the existing vehicle wiring, making it an essential repair solution for brittle or corroded connectors on L5P Duramax engines and other GM platforms.

• 4.5-inch pigtail length for flexible installation and splicing
• Replaces OEM Connector 13343443 and AC Delco Connector 13384371
• Durable construction to withstand engine bay heat and vibration
• Multiple application uses including fuel pressure regulators and wheel speed sensors
• Manufacturer Part Number: FPE-HAR-MU-PT-1

Specific applications include the rear wheel speed sensor, alternator signal, and fuel pressure regulator on 2017-2022 L5P Duramax models, the fuel pressure regulator on 2021 Silverado 4500/5500, and the starter motor on 2017 Chevrolet Cruze 1.4L engines.

Fits select 2020-2024 GM vehicles equipped with the 3.0L LM2 or LZ0 Duramax engine.

The Fleece Performance Injector Harness Pigtail provides a reliable, cost-effective solution for repairing damaged or corroded fuel injector wiring. Rather than replacing the entire engine wiring harness, this pigtail allows for a precise repair by splicing into the factory circuit. Designed to meet or exceed OE specifications, it ensures a secure electrical connection to maintain proper injector performance and engine timing.

• Direct replacement for damaged or brittle factory injector connectors
• Simplifies repairs without requiring a full harness replacement
• Compatible with both LM2 and LZ0 Duramax engine variants
• Manufacturer Part Number: FPE-HAR-LM2-INJ-12P-PT

Fits 2017-2022 Chevrolet Silverado and GMC Sierra 2500/3500 HD models equipped with the 6.6L L5P Duramax engine.

Address a frequent failure point on the L5P Duramax with this Fleece Performance fuel injector connector kit. Over time, factory connectors are prone to increased resistance which often results in injector-related diagnostic trouble codes (DTCs P0201 through P0208). These connectors are a standard replacement item during fuel injector service to ensure consistent electrical conductivity and long-term reliability.

Each pigtail is produced using a fully automated wire cutting and terminal crimping process to maintain tight tolerances and professional-grade quality. The kit includes heat-sealable butt-style connectors to provide a weather-tight repair that resists vibration and corrosion in the harsh engine bay environment.

• Replaces GM part number: 19368140
• Pigtail length: 4.5 inches
• Includes 8 replacement pigtails and heat-sealable butt connectors
• Automated terminal crimping for maximum reliability
• Manufacturer Part Number: FPE-HAR-L5P-INJ-PT-8P

Fits select 2017-2022 Chevrolet Silverado and GMC Sierra 2500 HD/3500 HD models equipped with the 6.6L L5P Duramax engine.

A common failure point on the L5P Duramax, these fuel injector connector pigtails address the increased resistance issues that often trigger injector Diagnostic Trouble Codes (DTCs) P0201 through P0208. These connectors are prone to wear over time and are typically recommended for replacement whenever injectors are serviced to ensure a reliable electrical connection and prevent future diagnostic issues.

Each connector is produced in-house using fully automated wire cutting and terminal crimping processes for precise tolerances and long-term durability. This kit includes four pigtails with 4.5-inch leads and heat-sealable butt-style connectors for a secure, weather-resistant installation.

• Direct replacement for GM part number 19368140
• 4.5-inch pigtail leads
• Automated wire cutting and crimping
• Includes heat-sealable butt-style connectors
• Sold as a set of 4
• Manufacturer Part Number: FPE-HAR-L5P-INJ-PT-4P

Fits 2017-2022 Chevrolet Silverado and GMC Sierra 2500/3500 HD trucks equipped with the 6.6L L5P Duramax engine.

This Fleece Performance replacement fuel injector connector is engineered to solve a common failure point on the L5P Duramax. These connectors are prone to increased electrical resistance over time, which frequently triggers injector-related diagnostic trouble codes (DTCs) P0201 through P0208. This pigtail allows for a reliable repair during injector replacement or when troubleshooting harness-side connectivity issues.

• 4.5-inch pigtail for flexible installation and splicing
• Includes two heat-sealable butt-style connectors for a secure, weather-resistant connection
• Helps eliminate resistance-induced DTCs (P0201-P0208)
• Replaces GM part number: 19368140
• Manufacturer Part Number: FPE-HAR-L5P-INJ-PT

Fits select 2001-2019 Chevrolet Silverado and GMC Sierra 2500 HD/3500 models with Allison LCT or GM 4T65-E transmissions.

Eliminate transmission fluid leaks at the harness connector with this Fleece Performance replacement internal wiring harness seal. Designed as a direct solution for the Allison LCT1000, LCT2000, and GM 4T65-E, this kit replaces the often hard-to-source OE 20-way pin seal. The assembly ensures a tight seal where the wiring exits the transmission case, preventing oil migration and potential electrical issues.

• Precision 20-way pin seal for secure electrical pass-through
• Includes new connector body and replacement O-ring for a complete repair
• Direct replacement for OE internal harness seals
• Compatible with Allison LCT1000 (MY2001-2019), LCT2000, and GM 4T65-E
• Replaces OE Part Numbers: 29545307, 29541371, 29539792, 29543336
• Manufacturer Part Number: FPE-HAR-GM-LCT-SEAL

This Fleece Performance 6-inch pigtail is a high-quality replacement connector designed for versatile use across Duramax, Cummins, and Powerstroke diesel platforms. Whether you are replacing a damaged connector on an injection pump, fuel pressure regulator, or DEF pump, this multi-use harness provides a reliable connection with 6 inches of wire for easy splicing into the factory loom.

Fits select 2001-2022 GM, RAM, Ford, Nissan, and Jeep vehicles (6.6L / 6.7L).

• Direct Replacement: Replaces worn or corroded factory connectors for critical fuel system and engine sensors to restore proper signal integrity.
• Versatile Application: Used for CP3 regulators, injection pumps, fuel temperature sensors, DEF pumps, and alternator signals depending on the specific vehicle platform.
• Specifications: 6-inch wire pigtail length; multi-use connector configuration.
• Manufacturer Part Number: FPE-HAR-FPR-PT

Cross-Reference & OE Replacement:

• Chrysler: 05143779AA
• GM: 84941154, 13384371, 13585849, 13587776, 89046837, 13343443
• ACDelco: PT2971

Fits 2020-2024 Ford F-250 and F-350 Super Duty trucks with the Powerstroke diesel engine.

The Fleece Performance FPE-HAR-FMC-FAN-20-PT is a heavy-duty, 6-inch replacement cooling fan pigtail designed for the 2020+ Ford Powerstroke fan clutch. Often difficult to source as a standalone component, this connector allows you to repair a damaged or corroded cooling fan harness without replacing the entire assembly. Each pigtail is produced in-house using a fully automated wire cutting and terminal crimping process to ensure exact tolerances and consistent electrical connectivity.

• 6-inch wire pigtail length
• Automated terminal crimping for maximum reliability
• Includes heat-sealable butt-style connectors for a moisture-resistant repair
• Manufacturer Part Number: FPE-HAR-FMC-FAN-20-PT

Fits select 2011-2018 Ford F-250 and F-350 Super Duty (6.7L Power Stroke).

This Fleece Performance cooling fan extension harness provides a cost-effective solution for repairing damaged or brittle wiring without the need to replace the entire engine fan and clutch assembly. Designed to mount directly to the fan assembly, it bridges the connection between the fan and the mating chassis harness, restoring proper communication to the cooling system.

Each harness is manufactured in-house using fully automated wire cutting and terminal crimping processes. This precision manufacturing ensures secure connections and consistent electrical conductivity, providing a reliable fix to get your truck back on the road.

• Direct-fit replacement for damaged or broken factory fan harnesses
• Eliminates the need to purchase a complete fan and clutch assembly
• Automated wire cutting and crimping for maximum reliability
• Mounts to the fan assembly and connects to the chassis harness
• Manufacturer Part Number: FPE-HAR-FMC-FAN-1118

Fits 2020-2024 Ford F-250 and F-350 Super Duty trucks equipped with the 6.7L Powerstroke diesel engine.

Wiring failures at the exhaust back pressure (EBP) sensor are a common issue on the 6.7L Powerstroke, often caused by high heat cycles and engine vibration that make factory connectors brittle. This Fleece Performance pigtail provides a reliable repair solution, allowing you to replace a damaged or corroded connector without replacing the entire engine wiring harness.

Built with high-quality connectors and color-coded wire leads, this pigtail is designed for a secure, weather-tight connection to restore proper signal communication to the ECU. It is a direct-fit replacement for the factory harness end at the EBP sensor location.

• Manufacturer Part Number: FPE-HAR-FMC-EXBP-2020-PT
• Direct replacement for damaged OE EBP sensor connectors
• High-quality wiring and terminals for long-term durability
• Includes pre-stripped color-coded leads for easy installation

Fits 2020-2022 Ford F-250 and F-350 Super Duty trucks (6.7L).

The Fleece Performance Charging Circuit Harness is a direct-fit solution for the common intermittent or persistent battery lamp (MIL) illumination on 2020-2022 Ford 6.7L Powerstroke trucks. The factory charging circuit sense wires, routed from the Powertrain Control Module (PCM) to the alternator, are prone to chafing, stress, and breakage due to their original routing. This harness bypasses the damaged factory wiring with a drop-in replacement that reroutes the alternator connection along the top of the engine for better protection and easier serviceability.

Manufactured with fully automated wire cutting and terminal crimping, this harness ensures high-quality connections that meet or exceed OE standards. Installation is straightforward with factory-style connectors that require no cutting or splicing of the original wiring loom.

• Direct Replacement: Fixes intermittent voltage readings and dashboard battery warnings.
• No Cutting or Splicing: Reroutes the alternator connection directly in-line with factory connections.
• Robust Construction: Features automated terminal crimping for maximum reliability.
• Compatibility: Designed for the primary alternator; compatible with vehicles equipped with secondary alternators.
• MPN: FPE-HAR-FMC-CCH-2022

Fits 2019 Ford F-250 and F-350 Super Duty (6.7L Power Stroke).

The Fleece Performance Charging Circuit Harness (MPN: FPE-HAR-FMC-CCH-19) provides a direct, drop-in solution for the common issue of an intermittent or continuously illuminated battery lamp on the dashboard. This fault is typically caused by damaged, stressed, or chafed charging circuit sense wires within the OEM harness that run from the Powertrain Control Module (PCM) to the alternator. Because the factory wiring is difficult to access and repair, this harness allows for a reliable fix by rerouting the connection away from common damage points.

Engineered for long-term durability, the harness is manufactured using fully automated wire cutting and terminal crimping processes to ensure precise electrical continuity. It installs directly in-line with factory connections without the need for cutting or splicing, allowing you to reroute the alternator connection along the top side of the engine for better protection and easier maintenance.

• Direct-fit replacement fixes intermittent charging circuit MIL/battery lamp
• Eliminates damaged or broken sense wires between the PCM and alternator
• No cutting or splicing required for installation
• Reroutes alternator connection to the engine top side for increased protection
• Precision manufactured with automated wire cutting and terminal crimping
• Designed for the primary alternator; compatible with dual-alternator vehicles
• Manufacturer Part Number: FPE-HAR-FMC-CCH-19

Fits 2017-2018 Ford F-250 and F-350 Super Duty models (6.7L Power Stroke).

The Fleece Performance Charging Circuit Harness is a specialized solution designed to address a common failure point in the 2017-2018 Ford 6.7L Power Stroke charging system. The factory charging circuit sense wires, which connect the Powertrain Control Module (PCM) to the alternator, are prone to stress, chafing, and breakage due to poor original equipment routing. This failure typically triggers an intermittent or continuous battery lamp (MIL) on the dashboard.

This harness provides a drop-in, plug-and-play replacement that eliminates the need for cumbersome diagnostic work or difficult OE harness repairs. Manufactured with fully automated wire cutting and terminal crimping, it utilizes factory-style connectors for a secure fit. The design allows you to reroute the alternator connection along the top side of the engine, protecting the delicate sense wires from the heat and exposure that cause the factory units to fail.

• Direct replacement for failed factory charging circuit sense wires
• Resolves intermittent or constant battery lamp dash alerts
• Engineered for the primary alternator; compatible with dual-alternator setups
• Reroutes wiring over the top of the engine to prevent future chafing and damage
• No cutting or splicing required; installs in-line with factory connections
• Built with automated precision for maximum terminal integrity
• Manufacturer Part Number: FPE-HAR-FMC-CCH-1718

Fits 2011-2016 Ford F-250 and F-350 Super Duty (6.7L Powerstroke).

The Fleece Performance Charging Circuit Harness is a direct-fit solution for the common intermittent or constant battery warning lamp on 2011-2016 Ford Super Duty trucks. This fault is typically caused by the factory Powertrain Control Module (PCM) to alternator sense wires becoming stressed, chafed, or broken due to their vulnerable routing on the underside of the engine. Because the OE harness is integrated into a larger, cumbersome assembly, it is notoriously difficult to diagnose and expensive to replace with factory components.

This harness provides a dedicated, drop-in replacement that bypasses the damaged sections without the need for cutting or splicing into your factory wiring. Manufactured in-house with fully automated wire cutting and terminal crimping, it ensures consistent electrical conductivity and long-term reliability to get your truck back on the road quickly.

• Fixes intermittent or continuously illuminated battery lamp on the dashboard
• Direct replacement for damaged, stressed, or broken charging circuit sense wires
• Drop-in installation with no cutting or splicing required
• Fully automated wire cutting and terminal crimping for high-quality connections
• Reduces diagnostic and repair time compared to full OE harness replacement
• Manufacturer Part Number: FPE-HAR-FMC-CCH-1116

Fits select 2003-2010 Ford F-250 and F-350 Super Duty (6.0L / 6.4L Powerstroke).

This Fleece Performance replacement camshaft position sensor pigtail is an engineered solution for damaged or corroded factory connectors. Unlike standard replacements, this harness features an extended 48-inch pigtail, allowing you to route the wiring from the sensor directly to a more accessible location on top of the engine valley. This extra length is specifically designed to facilitate easier maintenance and troubleshooting on the 6.0L and 6.4L Powerstroke platforms.

Every pigtail is produced in-house with precision manufacturing, utilizing fully automated wire cutting and terminal crimping to ensure maximum conductivity and mechanical pull-strength. This high-standard construction prevents the intermittent signals and poor connections that commonly lead to engine stalling or no-start conditions in heavy-duty diesel applications.

• Extended 48-inch lead for improved harness routing
• Precision-crimped terminals for reliable electrical contact
• Includes heat-sealable butt splice connectors for a weather-tight repair
• 6.0L Application: Matches factory red and orange wire colors
• 6.4L Application: Replaces yellow/violet or green/brown stripe wire circuits
• Manufacturer Part Number: FPE-HAR-FMC-CAM-0310

Fits 2006-2010 GM 2500/3500 trucks with the 6.6L Duramax engine.

Ensure consistent and accurate fuel system data with the Fleece Performance Rail Pressure Sensor Harness. Over time, factory wiring harnesses can become brittle or corroded due to extreme engine bay heat and vibration, often leading to erratic rail pressure readings, limp mode, or intermittent diagnostic trouble codes (DTCs). This replacement harness provides a reliable, secure connection to your engine's fuel rail pressure sensor.

Built to meet or exceed OE standards, this harness uses automotive-grade wiring and high-quality connectors designed to withstand the harsh environment of a heavy-duty diesel engine. It serves as a direct-fit solution to restore signal integrity and engine performance without the need for custom fabrication or complex rewiring.

• Direct-fit replacement for the factory rail pressure sensor connector
• High-quality, weather-tight connectors for maximum signal integrity
• Helps resolve intermittent sensor signals and related fuel system DTCs
• Engineered for the 2006-2010 GM 6.6L Duramax platform
• Manufacturer Part Number: FPE-HAR-DMAX-RP-0610

Fits select 2011-2016 Chevrolet Silverado and GMC Sierra 2500/3500 HD trucks (6.6L).

Repair a damaged Mass Air Flow (MAF) sensor connection with this Fleece Performance replacement pigtail. Specifically designed for the 2011-2016 6.6L Duramax LML, this pigtail allows you to restore proper sensor communication without replacing the entire wiring harness. Each pigtail is produced in-house using fully automated wire cutting and terminal crimping processes to ensure consistent electrical conductivity and durability for heavy-duty applications.

• Direct Replacement: Replaces GM 13579601 and AC Delco PT3345.
• Ready to Install: Includes a 6-inch pigtail and heat-sealable butt-style connectors for a secure, weather-resistant installation.
• Precision Manufacturing: Automated terminal crimping ensures a high-quality connection that stands up to engine bay heat and vibration.
• Manufacturer Part Number: FPE-HAR-DMAX-MAF-1116-PT

Fits 2011-2016 Chevrolet Silverado and GMC Sierra 2500/3500 HD models equipped with the 6.6L Duramax engine.

This Fleece Performance Fuel Rail Pressure Harness is a direct-fit replacement for discontinued GM factory harnesses. Manufactured in-house, each harness is produced using fully automated wire cutting and terminal crimping to ensure precise tolerances and reliable electrical connections. This harness routes underneath the turbocharger and connects the fuel rail pressure sensor to the main chassis harness, solving issues caused by heat-damaged or brittle factory wiring.

• Replaces discontinued GM part numbers 12647115 and 12638158
• Precision automated manufacturing for wire cutting and terminal crimping
• Routes under the turbocharger to factory chassis harness points
• Manufacturer Part Number: FPE-HAR-DMAX-LML-RP