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Duramax Parts

Duramax parts for every 6.6L Duramax in Chevy Silverado HD and GMC Sierra HD trucks, from the 2001 LB7 to the current L5P. Pick your engine below to see parts that fit your truck.

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    Cognito 11-19 Chevy/GMC Silverado/Sierra 2500/3500 HD 2WD/4WD Tubular Series LDG Traction Bar Kit

    Cognito
    $1,149.95 - $1,149.95
    $1,149.95
    $1,149.95 - $1,149.95
    $1,149.95

    The Cognito Tubular Series LDG Traction Bar Kit feature tubular traction bar construction, and adjustability that enables you to control unwanted a...

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    $1,149.95 - $1,149.95
    $1,149.95
    $1,149.95 - $1,149.95
    $1,149.95
  • Photo - Primary Photo - Primary

    Cognito 11-19 Chevy/GMC Silverado/Sierra 2500/3500 HD 2WD/4WD Tubular Series LDG Traction Bar Kit

    Cognito
    $1,149.95 - $1,149.95
    $1,149.95
    $1,149.95 - $1,149.95
    $1,149.95

    The Cognito Tubular Series LDG Traction Bar Kit feature tubular traction bar construction, and adjustability that enables you to control unwanted a...

    View full details
    $1,149.95 - $1,149.95
    $1,149.95
    $1,149.95 - $1,149.95
    $1,149.95
  • Photo - Primary Photo - Primary

    Cognito 11-19 Chevy/GMC Silverado/Sierra 2500/3500 HD 2WD/4WD SM Series LDG Traction Bar Kit

    Cognito
    $1,749.95 - $1,749.95
    $1,749.95
    $1,749.95 - $1,749.95
    $1,749.95

    The Cognito SM Series LDG Traction Bar Kit feature heavy-duty boxed sheet metal construction and adjustability that enables you to control unwanted...

    View full details
    $1,749.95 - $1,749.95
    $1,749.95
    $1,749.95 - $1,749.95
    $1,749.95
  • Photo - lifestyle view Photo - Primary

    Cognito 20-25 Chevy Silverado 2500/3500 HD Fender Trim Finishing Caps

    Cognito
    $154.95 - $154.95
    $154.95
    $154.95 - $154.95
    $154.95

    The OEM splash guards were designed around the OEM fender flares, which made it impossible to remove the OEM splash guards, without leaving the end...

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    $154.95 - $154.95
    $154.95
    $154.95 - $154.95
    $154.95
  • Photo - Primary Photo - Primary

    Cognito 11-19 Chevy/GMC Silverado/Sierra 2500/3500 HD 2WD/4WD Economy Leveling Kit

    Cognito
    $169.95 - $169.95
    $169.95
    $169.95 - $169.95
    $169.95

    This kit consists of torsion bar keys and shock extenders to be used with OE or OE length shocks.This Part Fits: Year Make Model Submodel 2015-2...

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    $169.95 - $169.95
    $169.95
    $169.95 - $169.95
    $169.95
  • Photo - Primary Photo - Primary

    Cognito 11-19 Chevy/GMC Silverado/Sierra 2500/3500 HD 2WD/4WD SM Series LDG Traction Bar Kit

    Cognito
    $1,749.95 - $1,749.95
    $1,749.95
    $1,749.95 - $1,749.95
    $1,749.95

    The Cognito SM Series LDG Traction Bar Kit features a heavy-duty boxed sheet metal construction with adjustability that enables you to control unwa...

    View full details
    $1,749.95 - $1,749.95
    $1,749.95
    $1,749.95 - $1,749.95
    $1,749.95
  • Photo - lifestyle view Photo - Primary

    Cognito 20-25 Chevrolet Silverado 2500 HD3in Performance Leveling Kit

    Cognito
    $1,662.49 - $1,662.49
    $1,662.49
    $1,662.49 - $1,662.49
    $1,662.49

    Front and rear Cognito 2.0 IFP aluminum shocks, rebuildable and tuned specifically for these trucks providing on-road comfort and control with the ...

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    $1,662.49 - $1,662.49
    $1,662.49
    $1,662.49 - $1,662.49
    $1,662.49
  • Photo - Primary Photo - Primary

    Cognito 11-19 Chevy/GMC Silverado/Sierra 2500/3500 HD 2WD/4WD Economy Traction Bar Kit

    Cognito
    $559.95 - $559.95
    $559.95
    $559.95 - $559.95
    $559.95

    This traction bar kit is a direct fit for 6.5-10 Inch of rear lift.Designed to help prevent axle wrap this traction bar kit features FK rod ends at...

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    $559.95 - $559.95
    $559.95
    $559.95 - $559.95
    $559.95
  • Photo - Primary Photo - Primary

    Cognito 11-19 Chevy/GMC Silv/Sierra 2500/3500 HD Economy Traction Bar Kit for 0-6in Rear Lift Kit

    Cognito
    $559.95 - $559.95
    $559.95
    $559.95 - $559.95
    $559.95

    This traction bar kit is a direct fit for 0 to 6 Inch of rear lift.Designed to help prevent axle wrap this traction bar kit features FK rod ends at...

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    $559.95 - $559.95
    $559.95
    $559.95 - $559.95
    $559.95
  • Photo - Primary Photo - Primary

    Cognito 20-24 Chevy Silverado 2500 HD Front Cab Mount Sway Bar

    Cognito
    $599.95 - $599.95
    $599.95
    $599.95 - $599.95
    $599.95

    Cognito Front Sway Bar for 20-23 Silverado/Sierra 2500HD/3500HDDesigned to reduce body roll so you have better vehicle control and greatly improves...

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    $599.95 - $599.95
    $599.95
    $599.95 - $599.95
    $599.95
  • Photo - lifestyle view Photo - Primary

    Cognito 20-24 Chevy/GMC Silv/Sierra 2500/3500 HD 2WD/4WD 3in Elite Leveling Kit w/ King 2.5 RR

    Cognito
    $4,234.88 - $4,234.88
    $4,234.88
    $4,234.88 - $4,234.88
    $4,234.88

    We have bundled everything you need in a leveling kit for your Silverado/Sierra 2500/3500 2WD/4WD with high quality Cognito components. There is no...

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    $4,234.88 - $4,234.88
    $4,234.88
    $4,234.88 - $4,234.88
    $4,234.88
  • Photo - Close Up Photo - Primary

    Cognito 11-19 Chevy/GMC Silverado/Sierra 2500/3500 HD 2WD/4WD Torsion Bar Keys

    Cognito
    $139.95 - $139.95
    $139.95
    $139.95 - $139.95
    $139.95

    Torsion bar keys are used to set the ride height of the front of the truck and are commonly used in leveling kits, and it is important to set the h...

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    $139.95 - $139.95
    $139.95
    $139.95 - $139.95
    $139.95
  • Photo - lifestyle view Photo - Primary

    Cognito 20-24 Chevy/GMC Silv/Sierra 2500/3500 HD 2WD/4WD 3in Premier Leveling Kit w/ Fox PSRR 2.0

    Cognito
    $2,578.23 - $2,578.23
    $2,578.23
    $2,578.23 - $2,578.23
    $2,578.23

    We have bundled everything you need in a leveling kit for your Silverado/Sierra 2500/3500 2WD/4WD with high quality Cognito components and Fox shoc...

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    $2,578.23 - $2,578.23
    $2,578.23
    $2,578.23 - $2,578.23
    $2,578.23
  • Photo - lifestyle view Photo - Primary

    Cognito 20-24 Chevy/GMC Silverado/Sierra 2500/3500 HD 2WD/4WD 3in Standard Leveling Kit

    Cognito
    $917.95 - $917.95
    $917.95
    $917.95 - $917.95
    $917.95

    We've bundled everything you need in a leveling kit for your 20-24 Silverado/Sierra 2500/3500 2WD/4WD with high quality Cognito components. There's...

    View full details
    $917.95 - $917.95
    $917.95
    $917.95 - $917.95
    $917.95
  • Photo - Primary Photo - Primary

    Cognito 20-25 Chevrolet Silverado 2500/3500HD 2.0 IFP Front & Rear Leveling Shock Kit

    Cognito
    $899.95 - $899.95
    $899.95
    $899.95 - $899.95
    $899.95

    Front and rear Cognito 2.0 IFP aluminum shocks, rebuildable and tuned specifically for these trucks providing on-road comfort and control with the ...

    View full details
    $899.95 - $899.95
    $899.95
    $899.95 - $899.95
    $899.95
  • Photo - Primary Photo - Primary

    Cognito 20-25 Chevy Silverado/ GMC Sierra 2500/3500HD 3in Standard SM Series Leveling Kit

    Cognito
    $1,121.95 - $1,121.95
    $1,121.95
    $1,121.95 - $1,121.95
    $1,121.95

    This particular package re-uses the OEM shocks by adding spacers for the front shocks in order to provide the optimal droop stop point. Cognito SM ...

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    $1,121.95 - $1,121.95
    $1,121.95
    $1,121.95 - $1,121.95
    $1,121.95
  • Photo - lifestyle view Photo - Primary

    Cognito 20-24 Chevy Silv/Sierra 2500/3500HD 2WD/4WD 3in Perf Ball Joint Lvling Kit w/ Fox PS 2.0 IFP

    Cognito
    $1,794.92 - $1,794.92
    $1,794.92
    $1,794.92 - $1,794.92
    $1,794.92

    We have bundled everything you need in a leveling kit for your 20-23 Silverado/Sierra 2500/3500 2WD/4WD with high quality Cognito components and Fo...

    View full details
    $1,794.92 - $1,794.92
    $1,794.92
    $1,794.92 - $1,794.92
    $1,794.92
  • Photo - lifestyle view Photo - Primary

    Cognito 20-24 Chevy Silv/Sierra 2500/3500HD 2/4WD 3in Perf Ball Joint Lvl Lift Kit w/ Fox PS 2.0 IFP

    Cognito
    $1,998.87 - $1,998.87
    $1,998.87
    $1,998.87 - $1,998.87
    $1,998.87

    We have bundled everything you need in a leveling kit for your GM 2500/3500 with high quality Cognito components. There is no guesswork, and you SA...

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    $1,998.87 - $1,998.87
    $1,998.87
    $1,998.87 - $1,998.87
    $1,998.87
  • Photo - Primary Photo - Primary

    Cognito 20-24 Chev Silv/Sierra 2500/3500HD SM Series LDG Traction Bar Kit - For 5-9in Rear Lift

    Cognito
    $1,749.95 - $1,749.95
    $1,749.95
    $1,749.95 - $1,749.95
    $1,749.95

    The Cognito SM Series LDG Traction Bar Kit features a heavy-duty boxed sheet metal construction with adjustability that enables you to control unwa...

    View full details
    $1,749.95 - $1,749.95
    $1,749.95
    $1,749.95 - $1,749.95
    $1,749.95
  • Photo - Close Up Photo - Primary

    Cognito 20-25 Chevrolet Silverado 2500 HD 1in Drop Leaf Spring Shackle

    Cognito
    $179.95 - $179.95
    $179.95
    $179.95 - $179.95
    $179.95

    The Cognito 1” Drop Shackle for GM 2500/3500 trucks lowers the rear ride height by approximately 1”, allowing you to dial in your truck’s rake to m...

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    $179.95 - $179.95
    $179.95
    $179.95 - $179.95
    $179.95
  • Photo - Primary Photo - Primary

    Cognito 20-24 Chev Silv/Sierra 2500/3500HD SM Series LDG Traction Bar Kit - For 0-4in Rear Lift

    Cognito
    $1,749.95 - $1,749.95
    $1,749.95
    $1,749.95 - $1,749.95
    $1,749.95

    The Cognito SM Series LDG Traction Bar Kit features a heavy-duty boxed sheet metal construction with adjustability that enables you to control unwa...

    View full details
    $1,749.95 - $1,749.95
    $1,749.95
    $1,749.95 - $1,749.95
    $1,749.95
  • Photo - lifestyle view Photo - Primary

    Cognito 20-25 Chevy/GMC Silverado/Sierra 2500/3500 HD 2WD/4WD 3in Standard Leveling Kit

    Cognito
    $759.95 - $759.95
    $759.95
    $759.95 - $759.95
    $759.95

    We've bundled everything you need in a leveling kit for your 2020-2022 Silverado/Sierra 2500/3500 2WD/4WD with high quality Cognito components. The...

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    $759.95 - $759.95
    $759.95
    $759.95 - $759.95
    $759.95
  • Photo - lifestyle view Photo - Primary

    Cognito 20-24 Chevy/GMC Silverado/Sierra 2500/3500 HD 2WD/4WD 3in Standard Leveling Lift Kit

    Cognito
    $959.95 - $959.95
    $959.95
    $959.95 - $959.95
    $959.95

    Cognito 20-24 Chevy/GMC Silverado/Sierra 2500/3500 HD 2WD/4WD 3in Standard Leveling Lift KitThis Part Fits: Year Make Model Submodel 2020-2025 C...

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    $959.95 - $959.95
    $959.95
    $959.95 - $959.95
    $959.95
  • Photo - lifestyle view Photo - Primary

    Cognito 20-24 Chevy/GMC Silverado/Sierra 2500/3500 HD 2WD/4WD 2in Economy Leveling Kit

    Cognito
    $169.95 - $169.95
    $169.95
    $169.95 - $169.95
    $169.95

    The Cognito 2-Inch Economy Leveling Kit offers a cost-effective solution to improve vehicle appearance. Made in the USA.This Part Fits: Year Make ...

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    $169.95 - $169.95
    $169.95
    $169.95 - $169.95
    $169.95

Duramax parts and performance upgrades for every 6.6L Duramax, from the 2001 LB7 to the current L5P. We carry injectors, fuel systems, turbos, tuning, Allison transmission parts and suspension from Kryptonite, Pro Form Fab and more.

Shop by Duramax Engine

Not sure what fits? Send us your VIN or call 865.640.2097 and we will match the right part.

Duramax FAQ

Which Duramax do I have?

The engine code is stamped on the block and often on a decal under the hood. LB7 ran 2001 to 2004, LLY 2004.5 to 2005, LBZ 2006 to 2007, LMM 2007.5 to 2010, LML 2011 to 2016, and L5P 2017 on.

Do parts interchange between Duramax generations?

Some suspension and driveline parts do, but fuel system, turbo and tuning parts are specific to each engine generation. Shop by engine and year, or send us your VIN.

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