Duramax: 2019-2026 (3.0L)

Duramax: 2001-2004 (LB7)

Duramax: 2004.5-2005 (LLY)

Duramax: 2006-2007 (LBZ)

Duramax: 2007.5-2010 (LMM)

Duramax: 2011-2016 (LML)

Duramax: 2017-2019 (L5P)

Duramax: 2020-2025 (L5P)

Sinister Diesel Black Diamond Head Gasket (Pass. A) (SDBD580) for 2001-2010 Duramax 6.6L

SKU: SDBD580
Original price was: $127.04.Current price is: $96.99.

Replace blown or leaking head gaskets on your 2001–2010 Duramax LB7, LLY, LBZ, or LMM diesel engine with the Sinister Diesel Black Diamond Head Gasket. Designed for durability, it features a 5-layer stainless steel construction with an FKM coating for a heavy-duty seal that withstands high heat and pressure. Available for both driver’s and passenger’s sides.

 

All sales are final for clearance items. Only valid while supplies last.

Sinister Diesel High Amp (400A) Wiring Upgrade Kit (SDALTWIRE)

SKU: SDALTWIRE
$225.21

This kit includes all necessary cables to upgrade the alternator charge, alternator ground, and chassis ground. It enhances performance for both stock and high-output alternators up to 400 amps. The cables feature 5285-strand pure copper construction with a 17.2mm diameter and a hyperflex frosted jacket.

Sinister Diesel 320 Amp OEM High Output Alternator (SDALT6613320) for 2013-2017 Duramax 6.6L

SKU: SDALT6613320
$1,146.59

The Sinister Diesel 320 amp alternator is a high-quality replacement for the OEM alternator in 2013-2018 GM Duramax 6.6L diesel engines. It prevents power issues that can lead to PDM failures by providing stronger, more reliable performance. Unlike remanufactured options, this alternator features all-new OEM components, an upgraded high-output regulator, high-temperature bearings, and a durable powder-coated aluminum chassis.

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Sinister Diesel 320 Amp OEM High Output Alternator (SDALT6608320) for 2008-2012 Duramax 6.6L

SKU: SDALT6608320
$1,146.59

The Sinister Diesel 320 Amp OEM alternator is a reliable solution for GM Duramax 6.6L alternator failures, which can cause electronics issues due to low voltage. It features brand-new OEM components, ensuring high quality and direct fitment without modifications. The product comes with a 1-year warranty.

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Sinister Diesel 320 Amp OEM High Output Alternator (SDALT6601320) for 2001-2007 Duramax 6.6L

SKU: SDALT6601320
$1,146.59

The Sinister Diesel 320 Amp OEM alternator is a trusted solution for GM Duramax 6.6L alternator failures, which can cause electronics issues due to low voltage. It features brand-new OEM components for reliability and is a direct fit without modifications. The alternator comes with a 1-year warranty.

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Sinister Diesel Exhaust Tip 5″-6″ Polished 304 Stainless Steel (SD56POL) Universal

SKU: SD56POL
$121.49

Sinister Diesel offers high-quality, aggressive-looking exhaust tips designed to enhance the appearance of diesel trucks. Made from durable 304 stainless steel and mirror-polished for a flashy, easy-to-clean finish, these single-wall tips fit 5-inch tailpipes and expand to 6 inches with a rolled edge. Each tip features the Sinister Diesel logo and is crafted for both performance and style.

Sinister Diesel Exhaust Tip 5″-6″ Black (SD56BLK) Universal

SKU: SD56BLK
$128.31

The Sinister Diesel ceramic-coated exhaust tip upgrades the look of your diesel truck with a black, aggressive finish that matches other blacked-out parts. Made from corrosion-resistant 304 stainless steel, it fits any 5-inch exhaust system (Duramax, Cummins, or Powerstroke) and expands the outlet to 6 inches. The black ceramic coating hides soot and dirt and is easy to clean. Installation is simple with basic hand tools using a clamp-on design.

Sinister Diesel Polished 304 Stainless Steel Exhaust Tip 4″ to 6″ (SD46POL) Universal

SKU: SD46POL
$121.49

The Sinister Diesel Exhaust Tip is a durable, high-quality stainless steel accessory that enhances your vehicle’s exhaust system. It features a single-wall, angle-cut design for a stylish, aggressive look and fits most 4″ exhaust systems. With a polished finish and easy installation, it offers both performance and visual appeal.

Sinister Diesel Black Ceramic Coated Stainless Steel Exhaust Tip 4″ to 6″ (SD46BLK) Universal

SKU: SD46BLK
$135.14

The Sinister Diesel Exhaust Tip is a durable, stainless steel aftermarket accessory that enhances both the look and performance of a vehicle’s exhaust system. It features a single-wall, angle-cut design with a Black Ceramic finish for a stylish, aggressive appearance. Easy to install, it fits most 4″ exhaust systems and is resistant to corrosion.

Sinister Diesel Exhaust Tip 4″-5″ Polished 304 Stainless Steel (SD45POL) Universal

SKU: SD45POL
$94.19

The Sinister Diesel Exhaust Tip is a durable, high-quality stainless steel accessory that enhances both the appearance and performance of your vehicle’s exhaust system. Featuring a single-wall, angle-cut design and a polished finish, it adds a stylish, aggressive look to your truck. Designed to fit most 4″ exhaust systems, it offers easy, hassle-free installation with all necessary components included.

Sinister Diesel Exhaust Tip 4″-5″ Black (SD45BLK) Universal

SKU: SD45BLK
$107.84

The Sinister Diesel Exhaust Tip is a durable, high-quality stainless steel accessory designed to enhance both the appearance and performance of your vehicle’s exhaust system. Featuring a single-wall, angle cut design and a sleek Black Ceramic finish, it offers a stylish, aggressive look. It fits most 4″ exhaust systems and includes everything needed for easy installation.

S&B Cold Air Intake Dry Extendable (75-5091D) for 2007-2010 Duramax LMM 6.6L

SKU: 75-5091D
$379.00

S&B cold air intake 75-5091D for 2007–2010 Duramax LMM 6.6L with dry extendable filter.

SUNCOAST ALLISON CAT1 500HP REBUILD KIT WITH CONVERTER (GMAX-CAT1-LB7LLY-KIT) FOR 2001-2005 DURAMAX LB7 / LLY

SKU: GMAX-CAT1-LB7LLY-KIT
$4,735.24

The SunCoast Allison CAT1 500HP Rebuild Kit with Converter (GMAX-CAT1-LB7LLY-KIT) is a heavy-duty transmission upgrade for 2001–2005 Duramax LB7 and LLY trucks. Designed to support up to 500 horsepower, it includes premium clutches, steels, gaskets, seals, and a high-performance torque converter to boost strength, reliability, and efficiency. Ideal for towing, racing, or high-demand use, the kit enhances durability and drivability for Allison 1000 transmissions.

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S&B Intake Replacement Filter Cotton Cleanable (KF-1035) for 1994-2009 Cummins 5.9L / 6.7L & 2001-2010 Duramax 6.6L LLY / LBZ / LB7 / LLM

SKU: KF-1035
$72.45

The S&B Intake Replacement Filter Cotton Cleanable (KF-1035) is a high-quality replacement filter designed for Duramax, LLY, LBZ, LB7, LLM, and 94-22 5.9L Cummins engines. It is made with durable materials and features a cleanable design, making it a cost-effective and environmentally-friendly option.

Fleece Fuel Filter Upgrade Kit – Short Bed (FPE-L5P-FFBA-20) for 2020-2024 Duramax 6.6L L5P

SKU: FPE-L5P-FFBA-20
$252.47

The Fleece Performance Fuel Filter Upgrade Kit (FPE-L5P-FFBA-20) is a high-quality aftermarket replacement for 2020–2024 GM Duramax 6.6L L5P short bed diesel trucks. It enhances fuel flow and filtration, offering improved engine performance, protection from contaminants, and reduced restriction. Designed for both performance and daily driving, this easy-to-install kit promotes longer injector life, consistent fuel delivery, and greater long-term reliability.

Fleece Setrab to -10AN Fittings (FPE-TL-ST) for Fleece Performance replacement Allison Transmission cooler lines

SKU: FPE-TL-ST
$22.04

The Fleece Performance Setrab to -10AN Fittings (FPE-TL-ST) are high-quality, corrosion-resistant components designed for seamless connection between Setrab transmission coolers and -10AN braided hoses. Specifically engineered for compatibility with Fleece’s Allison Transmission cooler line kits, these fittings ensure secure, leak-free connections and optimal fluid flow, making them ideal for performance applications where efficient transmission cooling is essential.

BD Diesel Allison Pressure Controller (1031315) for 2011-2016 Duramax LML

SKU: 1031315
$363.25

The Allison Pressure Controller for 2011–2016 Chevy Duramax trucks boosts transmission line pressure up to 275psi, increasing clutch holding power by 25% to 115% and enhancing transmission durability for towing, street, and race use. Unlike always-active solenoid foolers, it only activates above 15psi turbo boost, avoiding excess heat and rough shifting. It installs in under an hour.

Fleece Replacement CP3 fuel return hose for CP3 Conversion Kit (FPE-LML-HS-RTRN) for 2011-2016 Duramax LML

SKU: FPE-LML-HS-RTRN
$22.04

The Fleece Performance Replacement CP3 Fuel Return Hose (FPE-LML-HS-RTRN) is a durable, high-quality hose designed for 2011–2016 GM Duramax LML diesel engines with a CP3 conversion. It ensures a secure, leak-free connection between the CP3 pump and the factory return system, maintaining optimal fuel performance. Built to withstand high-pressure diesel systems, it offers a precise fit and OE-style reliability, making it ideal for CP3 conversions or hose replacements.

S&B Intake Replacement Filter Cotton Cleanable (KF-1052) for 2011 – 2014 Duramax 6.6L LML

SKU: KF-1052
$72.45

The S&B Intake Replacement Filter Cotton Cleanable (KF-1052) is a high-quality, durable filter designed specifically for 2011-2014 Duramax LML engines. This filter is a direct replacement for the factory air filter and offers superior filtration and airflow for improved engine performance.

FASS Titanium Signature Series Diesel Fuel System TSC08100G 100GPH (5-7 PSI) for GM/Chevy 6.5L TURBO DIESEL 1992-2000, Stock-600hp

SKU: TSC08100G
$733.95

The FASS Titanium Signature Series Diesel Fuel System TSC08100G is a high-performance product designed specifically for GM/Chevy 6.5L TURBO DIESEL engines from 1992-2000. This system is capable of delivering an impressive 100 gallons per hour of fuel at 5-7 PSI, making it ideal for stock engines with up to 600 horsepower. With its advanced filtration technology and durable construction, this fuel system ensures maximum fuel flow and protection for your engine. Whether you are looking to improve the performance of your diesel engine or simply want to boost its longevity, the FASS Titanium Signature Series is a reliable and efficient choice.

Head Pipe Kit (48631) Monster Exhaust – 2001-04 Chevy 6.6L

SKU: 48631
$184.80

The Head Pipe Kit Monster Exhaust is a high-quality exhaust kit designed for 2001-2004 Chevy 6.6L engines. This kit includes everything needed to replace the stock exhaust system and improve the performance of the vehicle. The head pipes are constructed from durable aluminized steel and feature mandrel-bent tubing for maximum flow and reduced backpressure. This results in increased horsepower, torque, and fuel efficiency. The kit also includes a high-flow muffler with a straight-through design for a deep and aggressive exhaust note. With easy bolt-on installation and a limited lifetime warranty, the Head Pipe Kit Monster Exhaust is a must-have upgrade for any Chevy 6.6L owner looking to enhance their vehicle’s performance and sound.

S&B Body Mount Kit (81-2002) Kit for 2006-2014 Duramax LBZ / LMM / LML

SKU: 81-2002
$471.45

S&B body mount kit 81-1008 for 2006–2014 Duramax LBZ, LMM, LML with polyurethane mounts.

MBRP 3″ Turbo Down-pipe Armor Lite (GMCA427) for 2011-2015 Duramax LML 6.6L

SKU: GMCA427
$358.22

The 3″ Turbo Down-pipe (GMCA427) from Armor Lite is a high-performance exhaust component designed for vehicles with turbocharged engines. Its key features include a 3″ diameter for maximum exhaust flow, a durable construction made from high-quality materials, and a direct fit for easy installation. The benefits of this down-pipe include improved engine performance, increased horsepower and torque, and a more aggressive exhaust sound. Its unique selling points are its compatibility with a wide range of vehicles and its ability to withstand high temperatures and harsh conditions. Overall, the 3″ Turbo Down-pipe (GMCA427) is a must-have upgrade for any turbocharged vehicle.

RealTruck AMP Research 75325-01A BedStepâ„¢

SKU: 75325-01A
$346.49

The RealTruck AMP Research 75325-01A BedStepâ„¢ is an innovative and practical addition to any truck bed. This retractable step provides easy access to the bed of your truck, making it convenient for loading and unloading cargo, or simply getting in and out of the bed. The BedStepâ„¢ is designed to be sturdy and durable, able to support up to 300 pounds of weight. Its sleek and low-profile design ensures that it doesn’t get in the way when not in use, and it can be easily installed without any drilling or modifications to your truck. Overall, the RealTruck AMP Research 75325-01A BedStepâ„¢ is a highly functional and convenient solution for anyone who uses their truck bed frequently.