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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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  • S&S Diesel Motorsport DBV4 Single Stage Relief Valve Internal Return, LLY/LBZ/LMM, 6.7 style - 2200bar

    S&S
    Original price $468.00 - Original price $468.00
    Original price
    $468.00
    $468.00 - $468.00
    Current price $468.00

    S&S Model PRV-I-2200-1SDBV4 Single Stage Relief Valve Internal Return, LLY/LBZ/LMM, 6.7 style - 2200bar Generic Image

    Original price $468.00 - Original price $468.00
    Original price
    $468.00
    $468.00 - $468.00
    Current price $468.00
  • S&S Diesel Motorsport DBV4 2 Stage Relief Valve Internal Return LLY/LBZ/LMM Style 2400 Bar

    S&S
    Original price $420.00 - Original price $420.00
    Original price
    $420.00
    $420.00 - $420.00
    Current price $420.00

    S&S Model PRV-I-2400-2SDBV4 2 stage relief valve, internal return, LLY/LBZ/LMM style - 2400bar *Generic Image

    Original price $420.00 - Original price $420.00
    Original price
    $420.00
    $420.00 - $420.00
    Current price $420.00
  • S&S Diesel Motorsport LBZ Nozzle Set

    S&S
    Original price $1,644.00 - Original price $2,383.00
    Original price
    $1,644.00
    $1,644.00 - $2,383.00
    Current price $1,644.00

    S&S Diesel Motorsport LBZ Nozzle Set - SAC *Generic image See our S&S Fuel System Planner guide for injector and CP3 pump sizing by horsepo...

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    Original price $1,644.00 - Original price $2,383.00
    Original price
    $1,644.00
    $1,644.00 - $2,383.00
    Current price $1,644.00
  • Yukon Unit Bearing & Hub Assembly for 99-14 GM 1/2 Ton Front

    Yukon Gear & Axle
    Original price $335.00 - Original price $335.00
    Original price
    $335.00
    $335.00 - $335.00
    Current price $335.00

    Enhanced Safety: Rest easy knowing that the YB U515036 hub assembly meets or exceeds OE standards, keeping you and your passengers safe on the road...

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    Original price $335.00 - Original price $335.00
    Original price
    $335.00
    $335.00 - $335.00
    Current price $335.00
  • Smeding Diesel 2020-2024 L5P Duramax Differential Cover

    Smeding
    Original price $485.00 - Original price $485.00
    Original price
    $485.00
    $485.00 - $485.00
    Current price $485.00

    This rear differential cover has been meticulously engineered to minimize friction and maximize lubrication of your gear set. If you want to keep y...

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    Original price $485.00 - Original price $485.00
    Original price
    $485.00
    $485.00 - $485.00
    Current price $485.00
  • Banks Power 2022+ GM - iDash Stealth Dual Gauge Pod Kit

    Banks Power
    Original price $211.00
    Original price $211.00 - Original price $211.00
    Original price $211.00
    Current price $190.00
    $190.00 - $190.00
    Current price $190.00

    iDash Stealth Pods are direct-fit gauge mounts that affix to your late 2022+ GM 1500's and 2024+ 2500/3500 factory A-pillar grab handle while con...

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    Original price $211.00
    Original price $211.00 - Original price $211.00
    Original price $211.00
    Current price $190.00
    $190.00 - $190.00
    Current price $190.00
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  • Banks Power 2020 GM 2500/3500 6.6L L5P Boost Tube Upgrade Kit - Red

    Banks Power
    Original price $1,138.00
    Original price $1,138.00 - Original price $1,138.00
    Original price $1,138.00
    Current price $1,024.00
    $1,024.00 - $1,024.00
    Current price $1,024.00

    Banks massive 3.5 inch boost tubes are the largest on the market, flowing 26-45 percent more air than stock! Smooth mandrel-bent tubes deliver more...

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    Original price $1,138.00
    Original price $1,138.00 - Original price $1,138.00
    Original price $1,138.00
    Current price $1,024.00
    $1,024.00 - $1,024.00
    Current price $1,024.00
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  • Banks Power 20-22 Chevy/GMC 2500/3500 L5P 6.6L Ram-Air Intake System - Oiled

    Banks Power
    Original price $807.00
    Original price $807.00 - Original price $807.00
    Original price $807.00
    Current price $727.00
    $727.00 - $727.00
    Current price $727.00

    A groundbreaking cold air intake featuring the patented Banks Air Mass Control Module. The electronic device allows our engineers to use the Banks ...

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    Original price $807.00
    Original price $807.00 - Original price $807.00
    Original price $807.00
    Current price $727.00
    $727.00 - $727.00
    Current price $727.00
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  • Wehrli 17-19 Chevrolet 6.6L L5P 4in Intake Kit Stage 2

    Wehrli
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $1,194.00
    $1,194.00 - $1,194.00
    Current price $1,194.00

    Wehrli Model WCF100360 This high-flow fabricated aluminum intake pipe, intake horn, and air box enclosure with dry filter assembly replaces the res...

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    Original price $0.00 - Original price $0.00
    Original price $0.00
    $1,194.00
    $1,194.00 - $1,194.00
    Current price $1,194.00
  • CSF 11-16 GMC Sierra 2500HD 6.6L OEM Intercooler

    CSF
    Original price $516.00 - Original price $516.00
    Original price
    $516.00
    $516.00 - $516.00
    Current price $516.00

    CSF Model 6001CSF 11-16 GMC Sierra 2500HD 6.6L OEM Intercooler

    Original price $516.00 - Original price $516.00
    Original price
    $516.00
    $516.00 - $516.00
    Current price $516.00
  • CSF 2001 Chevrolet Silverado 2500HD 6.6L OEM Intercooler

    CSF
    Original price $575.00 - Original price $575.00
    Original price
    $575.00
    $575.00 - $575.00
    Current price $575.00

    CSF Model 6007CSF 2001 Chevrolet Silverado 2500HD 6.6L OEM Intercooler

    Original price $575.00 - Original price $575.00
    Original price
    $575.00
    $575.00 - $575.00
    Current price $575.00
  • Fleece Performance 01-05 GM 2500/3500 Duramax Replacement Transmission Line (LB7/LMM) - Medium Line

    Fleece Performance
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $147.00
    $147.00 - $147.00
    Current price $147.00

    Fleece Performance Model FPE-TL-LB7-LMM-MED-SERFleece Performance 01-05 GM 2500/3500 Duramax Replacement Transmission Line (LB7/LMM) - Medium Line ...

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    Original price $0.00 - Original price $0.00
    Original price $0.00
    $147.00
    $147.00 - $147.00
    Current price $147.00
  • 6 Inch Lift Kit | Chevy/GMC Sierra/Silverado 2500 4WD (1999-2004)

    Rough Country
    Original price $1,908.00 - Original price $1,908.00
    Original price
    $1,908.00
    $1,908.00 - $1,908.00
    Current price $1,908.00

    Take your Heavy Duty Truck to the next level with Rough Country's 6-inch Suspension Lift designed to run up to 35-inch tires. Gain increased ground...

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    Original price $1,908.00 - Original price $1,908.00
    Original price
    $1,908.00
    $1,908.00 - $1,908.00
    Current price $1,908.00
  • M14 x 1.5 Lug Nut Set of 24 | Chrome

    Rough Country
    Original price $52.00 - Original price $52.00
    Original price
    $52.00
    $52.00 - $52.00
    Current price $52.00

    Secure your new wheels with Rough Countrys Bulge Acorn Style Lug Nuts. These cold-forged lug nuts are plated with a beautiful chrome finish for a l...

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    Original price $52.00 - Original price $52.00
    Original price
    $52.00
    $52.00 - $52.00
    Current price $52.00
  • M14 x 1.5 Lug Nut Set of 32 | Chrome | Open End

    Rough Country
    Original price $59.00 - Original price $59.00
    Original price
    $59.00
    $59.00 - $59.00
    Current price $59.00

    Secure your new wheels with Rough Countrys Bulge Acorn Style Lug Nuts. These cold-forged lug nuts are plated with a beautiful chrome finish for a l...

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    Original price $59.00 - Original price $59.00
    Original price
    $59.00
    $59.00 - $59.00
    Current price $59.00
  • Brakes Lines | Front | Chevy/GMC 1500/1500 SUV/2500HD/3500HD (07-19 & Classic)

    Rough Country
    Original price $118.00 - Original price $118.00
    Original price
    $118.00
    $118.00 - $118.00
    Current price $118.00

    Upgrade your worn out rubber brake lines with Rough Country's Stainless Extended Steel Brake Line Kit. Our DOT approved brake line kits offer the n...

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    Original price $118.00 - Original price $118.00
    Original price
    $118.00
    $118.00 - $118.00
    Current price $118.00
  • 2 Inch Leveling Kit | Chevy/GMC 2500HD (01-10)

    Rough Country
    Original price $118.00 - Original price $147.00
    Original price
    $118.00
    $118.00 - $147.00
    Current price $118.00

    Crank it up with Rough Country;s 2001-2010 Torsion Bar Leveling Kit. Featuring a set of durable, forged Torsion bar Keys, this kit affords you plen...

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    Original price $118.00 - Original price $147.00
    Original price
    $118.00
    $118.00 - $147.00
    Current price $118.00
  • Fleece Performance 11-16 GM 2500-3500 Duramax Fuel Rail Pressure Harness

    Fleece Performance
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $103.00
    $103.00 - $103.00
    Current price $103.00

    Fleece Performance Model FPE-HAR-DMAX-LML-RPFleece Performance 11-16 GM 2500-3500 Duramax Fuel Rail Pressure Harness Our Fuel Rail Pressure harness...

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    Original price $0.00 - Original price $0.00
    Original price $0.00
    $103.00
    $103.00 - $103.00
    Current price $103.00
  • Bilstein 5160 Series 11-23 Silverado 2500/3500 HD Front Shock Absorbers for 1.5in Lift

    Bilstein
    Original price $424.00 - Original price $424.00
    Original price
    $424.00
    $424.00 - $424.00
    Current price $424.00

    Bilstein B8 5160 remote reservoir shock absorbers are designed as a direct fit solution for lifted trucks and SUV’s. The remote reservoir will of...

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    Original price $424.00 - Original price $424.00
    Original price
    $424.00
    $424.00 - $424.00
    Current price $424.00
  • Soft Roll Up Bed Cover | 6'7" Bed | Chevy/GMC 1500/2500HD/3500HD (14-19 & Classic)

    Rough Country
    Original price $294.00 - Original price $294.00
    Original price
    $294.00
    $294.00 - $294.00
    Current price $294.00

    Superior Protection. Rough Country's Soft Roll-Up Bed Cover keeps the contents of your bed clean and dry while allowing maximum bed access when you...

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    Original price $294.00 - Original price $294.00
    Original price
    $294.00
    $294.00 - $294.00
    Current price $294.00
  • HD2 Aluminum Running Boards | Crew Cab | Chevy/GMC 1500/2500HD/3500HD (19-26)

    Rough Country
    Original price $558.00 - Original price $558.00
    Original price
    $558.00
    $558.00 - $558.00
    Current price $558.00

    Level up your truck's functionality and style with the Rough Country HD2 Running Boards. Crafted with precision and designed for those who demand t...

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    Original price $558.00 - Original price $558.00
    Original price
    $558.00
    $558.00 - $558.00
    Current price $558.00
  • HD2 Aluminum Running Boards | Crew Cab | Chevy/GMC 1500/2500HD/3500HD (07-19 & Classic)

    Rough Country
    Original price $558.00 - Original price $558.00
    Original price
    $558.00
    $558.00 - $558.00
    Current price $558.00

    Level up your truck's functionality and style with the Rough Country HD2 Running Boards. Crafted with precision and designed for those who demand t...

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    Original price $558.00 - Original price $558.00
    Original price
    $558.00
    $558.00 - $558.00
    Current price $558.00
  • 2" Rear Block Kit - GM Truck

    ReadyLift
    Original price $250.00 - Original price $250.00
    Original price
    $250.00
    $250.00 - $250.00
    Current price $250.00

    Readylift Model 66-3052 QUICK OVERVIEW Chevy/GMC 2" OEM Style Rear Block Kit for 1988-98 GM 1500 2000-2010 GM HD 2500/3500 8-lug Includes new longe...

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    Original price $250.00 - Original price $250.00
    Original price
    $250.00
    $250.00 - $250.00
    Current price $250.00
  • 5-6'' Lift Kit - GM Silverado / Sierra 2500HD/3500HD W/ Falcon Shocks 2011-2019

    ReadyLift
    Original price $4,548.00 - Original price $4,548.00
    Original price
    $4,548.00
    $4,548.00 - $4,548.00
    Current price $4,548.00

    Readylift Model 44-30520 QUICK OVERVIEW Lift adjustable from 5" to 6" Made to fit 2011-2019 GM 2500HD/3500HD Complete front/rear off-road suspen...

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    Original price $4,548.00 - Original price $4,548.00
    Original price
    $4,548.00
    $4,548.00 - $4,548.00
    Current price $4,548.00

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.

Powerhouse Diesel