Cooling

Drivetrain

Electrical

Engine Upgrades

Exhaust

Exterior

Fuel System

Intake System

Interior

Lighting

Suspension

Tuners & Programmers

Turbochargers

Fleece Performance Billet Oil Cap Blue (FPE-DMAX-OC-BLU) for 2001-2016 Duramax LB7 / LLY / LBZ

SKU: FPE-DMAX-OC-BLU
$44.08

The Fleece Performance Billet Oil Cap Blue (FPE-DMAX-OC-BLU) is a durable, anodized aluminum upgrade for 2001–2016 GM Duramax diesel engines (LB7, LLY, LBZ). It offers a secure, leak-free seal and enhances engine bay aesthetics with its vibrant blue finish. Designed for a precise fit, it replaces the factory cap with a corrosion-resistant, high-performance alternative ideal for diesel enthusiasts seeking improved function and style.

Fleece Performance Billet Oil Cap Black (FPE-DMAX-OC-BLK) for 2001-2016 Duramax LB7 / LLY / LBZ

SKU: FPE-DMAX-OC-BLK
$44.08

The Fleece Performance Billet Oil Cap Black (FPE-DMAX-OC-BLK) is a durable, high-quality aluminum replacement for 2001–2016 GM Duramax diesel engines. It features a sleek black anodized finish for corrosion resistance and improved aesthetics. Designed for a perfect fit, it ensures a secure seal to maintain oil pressure and prevent leaks, making it ideal for both performance enthusiasts and daily drivers.

Fleece Auxiliary Heated Fuel Filter Kit (FPE-DMAX-HFFBA-1116) for 2011-2016 Duramax LML

SKU: FPE-DMAX-HFFBA-1116
$439.90

The Fleece Auxiliary Heated Fuel Filter Kit (FPE-DMAX-HFFBA-1116) is an upgrade for 2011–2016 GM Duramax LML diesel engines that improves fuel system reliability, especially in cold weather. It features a high-quality auxiliary fuel filter with a built-in heating element to prevent fuel gelling, while also removing contaminants and water. Designed for durability and easy plug-and-play installation, it enhances engine protection and extends fuel system life.

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Fleece CP3 Adapter (FPE-DMAX-CP3-ADPT) for 2001-2016 Duramax 6.6L LB7/ LLY / LBZ / LMM / LML

SKU: FPE-DMAX-CP3-ADPT
$73.49

The Fleece CP3 Adapter (FPE-DMAX-CP3-ADPT) is a precision-engineered component for 2001–2016 GM Duramax 6.6L diesel engines. It enables the replacement of the less reliable factory CP4 fuel pump with a more dependable CP3 pump, particularly beneficial for LML models. Designed for durability and proper fitment, the adapter enhances fuel system reliability and performance, making it ideal for high-horsepower or heavy-duty use.

Fleece Performance Bosch CP3 (FPE-DMAX-CP3) for 2001-2016 Duramax LB7 / LLY / LBZ / LMM / LML

SKU: FPE-DMAX-CP3
$1,410.10

The Fleece Performance Bosch CP3 (FPE-DMAX-CP3) is a durable, high-performance replacement fuel injection pump for 2001–2016 GM Duramax diesel engines (LB7, LLY, LBZ, LMM, LML). Known for its reliability and ability to support higher horsepower, it restores proper fuel pressure and flow, making it a preferred upgrade over the less reliable stock CP4 pumps. Ideal for both replacements and performance upgrades, it’s trusted by diesel enthusiasts and professionals.

Fleece 3/8″ CP3 Return Fitting (FPE-CP3-RTRN) for CP3 fuel pumps

SKU: FPE-CP3-RTRN
$17.59

The Fleece 3/8″ CP3 Return Fitting (FPE-CP3-RTRN) is a durable, high-quality aftermarket part designed for CP3 fuel pumps. It ensures a secure, leak-free return line connection to support optimal fuel system performance. Compatible with various fuel setups, it’s ideal for performance upgrades or maintenance. Made by Fleece Performance Engineering, it offers easy installation and reliable operation under demanding conditions.

Fleece Rocker Bridges (FPE-BRAB-D1) for 2001-2016 Duramax LP7 / LLY / LBZ / LMM / LML

SKU: FPE-BRAB-D1
$566.50

The Fleece Rocker Bridges (FPE-BRAB-D1) are high-strength, precision components designed for 2001–2016 GM Duramax diesel engines (LB7, LLY, LBZ, LMM, LML). They enhance valvetrain stability and durability, making them ideal for high-performance or heavy-duty applications. Built to OEM specifications, these direct-fit bridges reduce engine wear, maintain proper valve geometry, and are compatible with both factory and aftermarket rocker arms.

Fleece Tall Stack Cover – 5″ Diameter – Straight Cut (FPE-STK-CVR-5-S) fits 5″ stack

SKU: FPE-STK-CVR-5-S
$48.50

The Fleece Tall Stack Cover (FPE-STK-CVR-5-S) is a durable protective cover designed for 5-inch straight-cut exhaust stacks. It provides a snug, tall fit to shield stacks from debris, moisture, and environmental elements, helping prevent corrosion and blockages. Ideal for trucks and performance vehicles, it helps extend the life of the exhaust system.

Fleece Tall Stack Cover – 6″ Diameter – Straight Cut (FPE-STK-CVR-6-S) fits 6″ stack

SKU: FPE-STK-CVR-6-S
$49.60

The Fleece Tall Stack Cover – 6″ Diameter – Straight Cut (FPE-STK-CVR-6-S) is a high-quality protective cover designed to fit 6-inch exhaust stacks with a straight-cut top. Crafted from durable materials, this cover helps prevent debris, moisture, and unwanted pests from entering the exhaust stack when the vehicle is not in use. Ideal for trucks with vertical exhaust stacks, the Fleece Tall Stack Cover ensures longevity and optimal performance by keeping the system clean and protected. Its snug fit and easy installation make it a practical and essential accessory for maintaining your exhaust system.

Fleece Tall Stack Cover – 6″ Diameter – Miter Cut (FPE-STK-CVR-6-45) fits 6″ stack

SKU: FPE-STK-CVR-6-45
$49.60

The Fleece Tall Stack Cover – 6″ Diameter – Miter Cut (FPE-STK-CVR-6-45) is a durable cover designed to protect 6-inch exhaust stacks. Featuring a 45-degree miter cut for a secure fit, it shields against debris, moisture, and pests when not in use. Made from high-quality materials, it helps maintain exhaust system performance and longevity in all weather conditions, making it a practical choice for truck owners and operators.

Fleece Tall Stack Cover – 5″ Diameter – Miter Cut (FPE-STK-CVR-5-45) fits 5″ stack

SKU: FPE-STK-CVR-5-45
$48.50

The Fleece Tall Stack Cover (FPE-STK-CVR-5-45) is designed for 5-inch diameter exhaust stacks with a miter cut. Made from fleece, it protects stacks from moisture, debris, and pests, helping prevent corrosion and extend system life. Ideal for trucks, generators, and industrial equipment, it offers a snug fit and easy use for effective maintenance.

Fleece Tall Stack Cover – 8″ Diameter – Straight Cut (FPE-STK-CVR-8-S) fits 8″ stack

SKU: FPE-STK-CVR-8-S
$48.50

The Fleece Tall Stack Cover – 8″ Diameter – Straight Cut (FPE-STK-CVR-8-S) is a durable, weather-resistant cover designed for 8-inch exhaust stacks on trucks and heavy-duty vehicles. It provides a secure fit to protect against debris, moisture, and harsh conditions when not in use. Featuring a sleek straight-cut design, it is easy to install and remove, helping to extend the life of exhaust components.

Bilstein B8 5100 Ride Height Adjustable Kit (24-336895) for 2014-2019 Duramax LML / L5P

SKU: 24-336895
$234.78

The Bilstein B8 5100 (Ride Height Adjustable) shock absorbers are designed for trucks and SUVs with front OE coilover-style suspension. They offer adjustable front lift (0–3 inches, depending on the vehicle) through multiple snap-ring grooves. Featuring a 46mm monotube design with a self-adjusting deflective disc valve, these shocks enhance wheel travel and handling. They provide a simple solution for leveling your vehicle.

Bilstein Rear B8 5160 Shock (25-311846) for 2001-2024 Duramax LB7 / LLY / LBZ / LMM / L5P / LML

SKU: 25-311846
$288.75

The Bilstein B8 5160 remote reservoir shock absorbers are high-performance, direct-fit upgrades for lifted trucks and SUVs. They feature a remote reservoir for better cooling and increased wheel travel, enhancing off-road capability. With a monotube design and velocity-sensitive digressive valving tuned for specific vehicles, these shocks deliver consistent, fade-free performance. They also include a 360-degree swivel banjo hose fitting and a sleek billet reservoir mount for a clean installation. Overall, the B8 5160 shocks boost durability and off-road performance.

Fleece Multiuse Sensor Pigtail No 10 (FPE-HAR-MU-PT-10) for 2004.5-2016 6.6L Duramax and 2003-2010 6.0L/6.4L Powerstroke

SKU: FPE-HAR-MU-PT-10
$16.53

Replacement connector with 6″ pigtail for use in multiple locations on the Duramax and Powerstroke engines.

EFI Live FlashScan 3 (FS3-GM) for 2001-2016 GM Duramax LML/LMM/LBZ/LLY/LB7

SKU: FS3-GM
$1,076.25

FlashScan V3 Scan Only is a scan tool, data logger and calibration reader for selected GM, Dodge Cummins and Cummins HD engine controllers, in either standalone mode (FlashScan V3 to vehicle connection), or in pass through mode (PC/laptop to FlashScan V3 to vehicle connection).

Sinister Diesel Pre-Filter Sock for Cold Air Intake (SDUPFS0120)

SKU: SDUPFS0120
$58.68

The Sinister Diesel Pre-Filter Sock for Cold Air Intake SDUPFS0120 helps protect your air filter from dirt and debris buildup. It filters contaminants down to 5 microns while maintaining consistent airflow performance. The pre-filter helps extend air filter service life and supports reliable intake airflow. Testing shows no significant airflow restriction during operation. The SDUPFS0120 includes a 2-year warranty.

Sinister Diesel Intake Resonator Cover Plate (SDRSNTRDLML) for 2011-2016 Duramax 6.6L LML

SKU: SDRSNTRDLML
$95.54

The Sinister Diesel Intake Resonator Cover Plate SDRSNTRDLML fits 2011-2016 Duramax 6.6L LML engines. It replaces the bulky factory intake resonator with a cleaner and more durable cover plate. This upgrade helps reduce the risk of cracks that can allow unfiltered air into the intake system. It also improves engine bay appearance and intake reliability. The SDRSNTRDLML provides a dependable intake system upgrade.

SINISTER DIESEL TRANSMISSION REAR HOUSING SUPPORT (SDRHSDMAXLML) FOR 2011-2016 Duramax LML with ALLISON transmission

SKU: SDRHSDMAXLML
$200.54

The Sinister Diesel Transmission Rear Housing Support SDRHSDMAXLML fits 2011-2016 Duramax LML trucks with Allison transmissions. It is built from 7/8-inch .120 wall DOM mild steel tubing for added strength and durability. This support helps reduce stress caused by driveline vibration and damaged driveline components. The direct-fit design installs using factory bolts. The SDRHSDMAXLML provides dependable drivetrain reinforcement for 4×4 applications.

Sinister Diesel Radiator Pipe (SDRADTUBEDMAX11) for 2011-2016 Duramax 6.6L LML

SKU: SDRADTUBEDMAX11
$225.21

The Sinister Diesel Radiator Pipe SDRADTUBEDMAX11 fits 2011-2016 Duramax 6.6L LML engines. It replaces factory coolant hoses with durable 6061 aluminum construction for improved reliability. The kit includes heat-resistant four-ply silicone boots rated to 400 PSI. Precision mandrel bends provide proper fitment and installation. The SDRADTUBEDMAX11 adds cooling system durability and improved engine bay appearance.

Sinister Diesel PITBULL SERIES® Turbocharger (SDPB66TURBO11) for 2011-2016 Duramax 6.6L LML

SKU: SDPB66TURBO11
$3,821.99

The Sinister Diesel PITBULL SERIES® Turbocharger is a high-performance, drop-in upgrade for 2011–2016 Chevy and GMC Duramax 6.6L trucks. It retains the factory VGT and mounting style for easy installation, improves power potential up to 650 horsepower, maintains low-end drivability, reduces peak exhaust gas temperatures (EGTs), and lowers drive pressure.