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Duramax Parts

High-quality Duramax performance parts are a must if you’re trying to get more out of your Chevy or GMC Duramax engine. That’s why Powerhouse Diesel stocks a wide range of Duramax parts engineered specifically to Get the most out of your truck. When you choose to shop with us, you can take advantage of our extensive expertise and experience to help you find the ideal solution for what you need from your engine.

Not only do we have a comprehensive inventory of Duramax diesel parts, but also we offer the highest levels of customer service. Our team is made up of gearheads just like you, meaning we spend as much time under the hood as anyone. You can trust us to guide you in the right direction, so you’ll have the correct parts that make the most sense for your needs.

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  • Fleece Performance 01-05 GM Duramax 6.6L LB7/LLY Allison Transmission Cooler Lines

    Fleece Performance
    Original price $ 4,975.00 - Original price $ 4,975.00
    Original price $ 4,975.00
    $ 5,528.00
    $ 5,528.00 - $ 5,528.00
    Current price $ 5,528.00

    Fleece Performance Model FPE-TL-LB7-LLY Replace your leaking transmission lines with our heavy duty, high flow, flexible transmission lines. Our ki...

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    Original price $ 4,975.00 - Original price $ 4,975.00
    Original price $ 4,975.00
    $ 5,528.00
    $ 5,528.00 - $ 5,528.00
    Current price $ 5,528.00
  • Fleece 17-22 GM 2500/3500 Duramax L5O Replacement Fuel Injector Connector

    Fleece Performance
    Original price $ 1,110.00 - Original price $ 1,110.00
    Original price $ 1,110.00
    $ 1,233.00
    $ 1,233.00 - $ 1,233.00
    Current price $ 1,233.00

    Fleece Performance Model FPE-HAR-L5P-INJ-PTA common failure point on the L5P Duramax, our replacement connector with 4.5 inch pigtail for the fuel ...

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    Original price $ 1,110.00 - Original price $ 1,110.00
    Original price $ 1,110.00
    $ 1,233.00
    $ 1,233.00 - $ 1,233.00
    Current price $ 1,233.00
  • Fleece Performance 03-05 GM Duramax 6.6L LB7 / LLY GM/Allison TapShifter

    Fleece Performance
    Original price $ 7,380.00 - Original price $ 7,380.00
    Original price $ 7,380.00
    $ 8,200.00
    $ 8,200.00 - $ 8,200.00
    Current price $ 8,200.00

    Fleece Performance Model FPE-TAPSHIFTER35The Fleece Performance TapShifter allows you to shift your 2001-2005 GM Allison Transmission with the touc...

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    Original price $ 7,380.00 - Original price $ 7,380.00
    Original price $ 7,380.00
    $ 8,200.00
    $ 8,200.00 - $ 8,200.00
    Current price $ 8,200.00
  • Fleece Performance 01-11 GM Duramax 6.6L 2500-3500HD Pickups Tie Rod Reinforcement Sleeves

    Fleece Performance
    Original price $ 1,480.00 - Original price $ 1,480.00
    Original price $ 1,480.00
    $ 1,644.00
    $ 1,644.00 - $ 1,644.00
    Current price $ 1,644.00

    Fleece Performance Model FPE-TIERODSLEEVESFleece Performance Tie Rod Sleeves are a must for any 99-10 GM 2500-3500HD pickup that utilizes four-whee...

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    Original price $ 1,480.00 - Original price $ 1,480.00
    Original price $ 1,480.00
    $ 1,644.00
    $ 1,644.00 - $ 1,644.00
    Current price $ 1,644.00
  • Fleece Performance 01-13 GM Duramax 6.6L Duramax CP3K (LBZ/LMM Based)

    Fleece Performance
    Original price $ 24,025.00 - Original price $ 24,025.00
    Original price $ 24,025.00
    $ 26,694.00
    $ 26,694.00 - $ 26,694.00
    Current price $ 26,694.00

    Fleece Performance Model FPE-DMAX-CP3KDesigned to eliminate the factory fuel flow restriction that begins at 3000 RPM;Correlates to lost horsepower...

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    Original price $ 24,025.00 - Original price $ 24,025.00
    Original price $ 24,025.00
    $ 26,694.00
    $ 26,694.00 - $ 26,694.00
    Current price $ 26,694.00
  • Fleece Performance 01-13 GM Duramax 6.6L Duramax PowerFlo 750 CP3 (LBZ/LMM Based)

    Fleece Performance
    Original price $ 36,971.00 - Original price $ 36,971.00
    Original price $ 36,971.00
    $ 41,079.00
    $ 41,079.00 - $ 41,079.00
    Current price $ 41,079.00

    Fleece Performance Model FPE-DMAX-CP3-10MMDesigned to eliminate the factory fuel flow restriction that begins at 3000 RPM;Correlates to lost horsep...

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    Original price $ 36,971.00 - Original price $ 36,971.00
    Original price $ 36,971.00
    $ 41,079.00
    $ 41,079.00 - $ 41,079.00
    Current price $ 41,079.00
  • Fleece Performance 01-13 GM Duramax 6.6L Duramax Turbo Thermostat Delete Plug

    Fleece Performance
    Original price $ 702.00 - Original price $ 702.00
    Original price $ 702.00
    $ 780.00
    $ 780.00 - $ 780.00
    Current price $ 780.00

    Fleece Performance Model FPE-TURBO-THERMThe Fleece Performance Duramax Turbo Thermostat Delete Plug is designed to eliminate the stock coolant feed...

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    Original price $ 702.00 - Original price $ 702.00
    Original price $ 702.00
    $ 780.00
    $ 780.00 - $ 780.00
    Current price $ 780.00
  • Fleece Performance 11-16 GM 2500/3500 Duramax LML Fan Extension Harness

    Fleece Performance
    Original price $ 851.00 - Original price $ 851.00
    Original price $ 851.00
    $ 946.00
    $ 946.00 - $ 946.00
    Current price $ 946.00

    Fleece Performance Model FPE-HAR-DMAX-FAN-LMLOur replacement fan extension harness for the 2011-2016 LML Duramax allows you to repair a broken or d...

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    Original price $ 851.00 - Original price $ 851.00
    Original price $ 851.00
    $ 946.00
    $ 946.00 - $ 946.00
    Current price $ 946.00
  • Fleece Performance 15-16 GM Duramax 2500/3500 Heavy Duty Transmission Cooler lines

    Fleece Performance
    Original price $ 6,103.00 - Original price $ 6,103.00
    Original price $ 6,103.00
    $ 6,782.00
    $ 6,782.00 - $ 6,782.00
    Current price $ 6,782.00

    Fleece Performance Model FPE-TL-LML-1516Replace your leaking transmission lines with our heavy duty, high flow, flexible transmission lines. Our ki...

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    Original price $ 6,103.00 - Original price $ 6,103.00
    Original price $ 6,103.00
    $ 6,782.00
    $ 6,782.00 - $ 6,782.00
    Current price $ 6,782.00
  • Fleece Performance 11-16 Chevrolet Duramax 6.6L (LML) 63mm Billet VNT Cheetah Turbocharger

    Fleece Performance
    Original price $ 48,992.00 - Original price $ 48,992.00
    Original price $ 48,992.00
    $ 54,436.00
    $ 54,436.00 - $ 54,436.00
    Current price $ 54,436.00

    Fleece Performance Model FPE-LML-VNT-63-FMW-NThe 63mm FMW Duramax VNT Cheetah Turbocharger is a drop-in replacement turbocharger for 2011-2016 Dura...

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    Original price $ 48,992.00 - Original price $ 48,992.00
    Original price $ 48,992.00
    $ 54,436.00
    $ 54,436.00 - $ 54,436.00
    Current price $ 54,436.00
  • Fleece Performance 11-14 GM Duramax 2500/3500 Heavy Duty Trans Cooler Lines

    Fleece Performance
    Original price $ 6,103.00 - Original price $ 6,103.00
    Original price $ 6,103.00
    $ 6,782.00
    $ 6,782.00 - $ 6,782.00
    Current price $ 6,782.00

    Fleece Performance Model FPE-TL-LML-1114Replace your leaking transmission lines with our heavy duty, high flow, flexible transmission lines. Our ki...

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    Original price $ 6,103.00 - Original price $ 6,103.00
    Original price $ 6,103.00
    $ 6,782.00
    $ 6,782.00 - $ 6,782.00
    Current price $ 6,782.00
  • Fleece Performance 11-16 GM Duramax Short Bed SureFlo Performance Sending Unit

    Fleece Performance
    Original price $ 6,640.00 - Original price $ 6,640.00
    Original price $ 6,640.00
    $ 7,378.00
    $ 7,378.00 - $ 7,378.00
    Current price $ 7,378.00

    Fleece Performance Model FPE-SF-GM-1116-SBProblem: If you are running an aftermarket pump that is mounted external of the fuel tank, you will need ...

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    Original price $ 6,640.00 - Original price $ 6,640.00
    Original price $ 6,640.00
    $ 7,378.00
    $ 7,378.00 - $ 7,378.00
    Current price $ 7,378.00
  • Fleece Performance 11-16 6.6L GM Duramax Resonator Delete Plate

    Fleece Performance
    Original price $ 740.00 - Original price $ 740.00
    Original price $ 740.00
    $ 822.00
    $ 822.00 - $ 822.00
    Current price $ 822.00

    Fleece Performance Model FPE-LML-RESOur resonator delete plate is designed to fit your factory intake elbow perfectly so it requires no modificatio...

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    Original price $ 740.00 - Original price $ 740.00
    Original price $ 740.00
    $ 822.00
    $ 822.00 - $ 822.00
    Current price $ 822.00
  • Fleece Performance 11-16 GM 2500/3500 Duramax LML CP3 Conversion Kit w/CP3

    Fleece Performance
    Original price $ 36,971.00 - Original price $ 36,971.00
    Original price $ 36,971.00
    $ 41,079.00
    $ 41,079.00 - $ 41,079.00
    Current price $ 41,079.00

    Fleece Performance Model FPE-LML-CP3-WPConvert your LML's fuel system from a CP4 to a CP3. Improve your LML Duramax's reliability and fueling capab...

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    Original price $ 36,971.00 - Original price $ 36,971.00
    Original price $ 36,971.00
    $ 41,079.00
    $ 41,079.00 - $ 41,079.00
    Current price $ 41,079.00
  • Fleece Performance 11-16 GM 2500/3500 LML Duramax Return Fuel Pressure Test Port

    Fleece Performance
    Original price $ 555.00 - Original price $ 555.00
    Original price $ 555.00
    $ 617.00
    $ 617.00 - $ 617.00
    Current price $ 617.00

    Fleece Performance Model FPE-FPTP-GM-1116The return fuel pressure test port for the 2011-2016 LML Duramax is designed to aid the technician in trou...

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    Original price $ 555.00 - Original price $ 555.00
    Original price $ 555.00
    $ 617.00
    $ 617.00 - $ 617.00
    Current price $ 617.00
  • Fleece Performance 11-2016 GM 6.6L Duramax CP3 Regulator Extension Harness

    Fleece Performance
    Original price $ 555.00 - Original price $ 555.00
    Original price $ 555.00
    $ 617.00
    $ 617.00 - $ 617.00
    Current price $ 617.00

    Fleece Performance Model FPE-HAR-CP3-EXTRegulator extension harness for use with Bosch CP3's used in 6.6L Duramax applications.

    Original price $ 555.00 - Original price $ 555.00
    Original price $ 555.00
    $ 617.00
    $ 617.00 - $ 617.00
    Current price $ 617.00
  • Fleece Performance 11-16 GM 2500/3500 6.6L Duramax Replacement High Pressure Fuel Line for CP3 Conv.

    Fleece Performance
    Original price $ 3,329.00 - Original price $ 3,329.00
    Original price $ 3,329.00
    $ 3,699.00
    $ 3,699.00 - $ 3,699.00
    Current price $ 3,699.00

    Fleece Performance Model FPE-FL-LML-CP3-HPReplacement high pressure fuel line for 6.6L LML Duramax's with CP3 conversion kits.Features: Replacemen...

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    Original price $ 3,329.00 - Original price $ 3,329.00
    Original price $ 3,329.00
    $ 3,699.00
    $ 3,699.00 - $ 3,699.00
    Current price $ 3,699.00
  • Fleece Performance 11-16 GM Duramax 2500-3500 LML Remanufactured Freedom Cylinder Head (Passenger)

    Fleece Performance
    Original price $ 20,326.00 - Original price $ 20,326.00
    Original price $ 20,326.00
    $ 22,584.00
    $ 22,584.00 - $ 22,584.00
    Current price $ 22,584.00

    Fleece Performance Model FPE-61-10004-PIntroducing our Freedom Series cylinder heads for the 6.6L Duramax! Each cylinder head is manufactured in ou...

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    Original price $ 20,326.00 - Original price $ 20,326.00
    Original price $ 20,326.00
    $ 22,584.00
    $ 22,584.00 - $ 22,584.00
    Current price $ 22,584.00
  • Fleece Performance 11-16 GM Duramax 2500-3500 LML Remanufactured Freedom Cylinder Head (Driver)

    Fleece Performance
    Original price $ 20,326.00 - Original price $ 20,326.00
    Original price $ 20,326.00
    $ 22,584.00
    $ 22,584.00 - $ 22,584.00
    Current price $ 22,584.00

    Fleece Performance Model FPE-61-10004-DIntroducing our Freedom Series cylinder heads for the 6.6L Duramax! Each cylinder head is manufactured in ou...

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    Original price $ 20,326.00 - Original price $ 20,326.00
    Original price $ 20,326.00
    $ 22,584.00
    $ 22,584.00 - $ 22,584.00
    Current price $ 22,584.00
  • Fleece 11-16 6.6L LML Duramax Truck PowerFlo In-tank Lift Pump (Long Bed Only)

    Fleece Performance
    Original price $ 14,778.00 - Original price $ 14,778.00
    Original price $ 14,778.00
    $ 16,420.00
    $ 16,420.00 - $ 16,420.00
    Current price $ 16,420.00

    Fleece Performance Model FPE-34564Fleece 11-16 6.6L LML Duramax Truck PowerFlo In-tank Lift Pump (Long Bed Only)User 1

    Original price $ 14,778.00 - Original price $ 14,778.00
    Original price $ 14,778.00
    $ 16,420.00
    $ 16,420.00 - $ 16,420.00
    Current price $ 16,420.00
  • Fleece 11-16 6.6L LML Duramax Truck PowerFlo In-tank Lift Pump (Short Bed Only)

    Fleece Performance
    Original price $ 14,778.00 - Original price $ 14,778.00
    Original price $ 14,778.00
    $ 16,420.00
    $ 16,420.00 - $ 16,420.00
    Current price $ 16,420.00

    Fleece Performance Model FPE-34563Fleece 11-16 6.6L LML Duramax Truck PowerFlo In-tank Lift Pump (Short Bed Only)User 1

    Original price $ 14,778.00 - Original price $ 14,778.00
    Original price $ 14,778.00
    $ 16,420.00
    $ 16,420.00 - $ 16,420.00
    Current price $ 16,420.00
  • Fleece Performance 04.5-05 GM 2500/3500 Duramax LLY Turbo Vane Position Sensor Adapter Harness

    Fleece Performance
    Original price $ 870.00 - Original price $ 870.00
    Original price $ 870.00
    $ 966.00
    $ 966.00 - $ 966.00
    Current price $ 966.00

    Fleece Performance Model FPE-HAR-DMAX-VPS-ADPTOur Fleece Performance adapter harness allows the 2004.5-2005 LLY Duramax to run the updated turbo va...

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    Original price $ 870.00 - Original price $ 870.00
    Original price $ 870.00
    $ 966.00
    $ 966.00 - $ 966.00
    Current price $ 966.00
  • Fleece Performance 04.5-05 GM 2500/3500 Duramax LLY High Pressure Injection Line (No. 4 & 5)

    Fleece Performance
    Original price $ 1,295.00 - Original price $ 1,295.00
    Original price $ 1,295.00
    $ 1,439.00
    $ 1,439.00 - $ 1,439.00
    Current price $ 1,439.00

    Fleece Performance Model FPE-FL-LLY-45LLY Duramax High Pressure Injection Line (Number 4 and Number 5). Replacement high pressure fuel lines from F...

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    Original price $ 1,295.00 - Original price $ 1,295.00
    Original price $ 1,295.00
    $ 1,439.00
    $ 1,439.00 - $ 1,439.00
    Current price $ 1,439.00
  • Fleece Performance 04.5-05 GM 2500/3500 Duramax LLY High Pressure Injection Line (No. 3 & 6)

    Fleece Performance
    Original price $ 1,295.00 - Original price $ 1,295.00
    Original price $ 1,295.00
    $ 1,439.00
    $ 1,439.00 - $ 1,439.00
    Current price $ 1,439.00

    Fleece Performance Model FPE-FL-LLY-36LLY Duramax High Pressure Injection Line (Number 3 and Number 6). Replacement high pressure fuel lines from F...

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    Original price $ 1,295.00 - Original price $ 1,295.00
    Original price $ 1,295.00
    $ 1,439.00
    $ 1,439.00 - $ 1,439.00
    Current price $ 1,439.00

 

YOUR ALL-IN-ONE SOURCE FOR DURAMAX PERFORMANCE UPGRADES

Having the right parts makes all the difference when you’re working on your engine, and we’re your total resource for everything you need. We have a wide assortment of Duramax parts for sale from top manufacturers including Kryptonite, ndustrial njectio, smeding, Banks Power and more. We give you a huge selection of options to choose from, meaning you’re more than likely to find exactly what you’re looking for when you need Duramax aftermarket parts.

From small parts for a quick fix to complete systems for a total overhaul, we have a solution for every need. Our range of products for Duramax engines includes:

  • Transmissions
  • Injection pumps
  • Turbochargers and exhausts
  • Wiring harnesses
  • Radiator hoses
  • Intercoolers
  • Fuel systems
  • And more

SHOP POWERHOUSE DIESEL

Whether you’re trying to squeeze more power out of your engine or keep it maintained to extend its lifespan, there’s no better place to turn than Powerhouse Diesel. From routine maintenance to full-on performance upgrades, our selection of components, tools and accessories make it possible to get the work done and give you the performance you’ve always wanted.

Our team here understands what you’re looking for and why. We’re just as passionate about trucks as you are, and we’ll take the time to share our expertise so you can find the perfect fit for your ride. If you want to learn more about everything we have to offer, take a moment to browse through our product listings on this page or reach out to one of our helpful representatives today.

Powerhouse Diesel