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LB7 Duramax Parts

Getting the most from your engine matters, especially when it’s a classic such as the LB7 Duramax. If your truck has one of these, you might be concerned about where to find everything you need to keep it in its best possible condition. Fortunately, Powerhouse Diesel has a huge selection of LB7 Duramax parts to help you boost its performance, extend its lifespan and ensure it remains in good working order for as long as possible.

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    GM Race Pistons For 01-16 Duramax Industrial Injection

    Industrial Injection
    $4,672.00 - $4,672.00
    $4,672.00
    $4,672.00 - $4,672.00
    $4,672.00

    Industrial Injection Model: PDM-362STDPDM's Ceramic Piston Skirt Coating, is designed to be used, on any rigid or semi rigid surface experiencing s...

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    $4,672.00 - $4,672.00
    $4,672.00
    $4,672.00 - $4,672.00
    $4,672.00
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    GM Race Pistons For 01-16 Duramax .040 Over Industrial Injection

    Industrial Injection
    $4,672.00 - $4,672.00
    $4,672.00
    $4,672.00 - $4,672.00
    $4,672.00

    Industrial Injection Model: PDM-362.040PDM's Ceramic Piston Skirt Coating, is designed to be used, on any rigid or semi rigid surface experiencing ...

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    $4,672.00 - $4,672.00
    $4,672.00
    $4,672.00 - $4,672.00
    $4,672.00
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    GM Race Pistons For 01-16 Duramax .020 Over Industrial Injection

    Industrial Injection
    $6,226.00
    $6,226.00 - $6,226.00
    $6,226.00
    $6,039.00
    $6,039.00 - $6,039.00
    $6,039.00

    Industrial Injection Model: PDM-362.020PDM's Ceramic Piston Skirt Coating, is designed to be used, on any rigid or semi rigid surface experiencing ...

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    $6,226.00
    $6,226.00 - $6,226.00
    $6,226.00
    $6,039.00
    $6,039.00 - $6,039.00
    $6,039.00
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    GM Race Cast Pistons For 01-16 Duramax .040 Oversize Cut Coated Tops and Skirts De-Lipped Industrial Injection

    Industrial Injection
    $3,836.00 - $3,836.00
    $3,836.00
    $3,836.00 - $3,836.00
    $3,836.00

    Industrial Injection Model: PDM-298.040Duramax .040 Over Fly Cut Race cast Pistons Set Coated Tops and Skirts Delipped Set. PDM's Ceramic Piston Sk...

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    $3,836.00 - $3,836.00
    $3,836.00
    $3,836.00 - $3,836.00
    $3,836.00
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    GM Race Cast Pistons For 01-16 Duramax .020 Oversize Cut Coated Tops and Skirts De-Lipped Industrial Injection

    Industrial Injection
    $4,875.00
    $4,875.00 - $4,875.00
    $4,875.00
    $4,729.00
    $4,729.00 - $4,729.00
    $4,729.00

    Industrial Injection Model: PDM-298.020Duramax .020 Oversize Race cast Pistons Set Coated Tops and Skirts Delipped Set. PDM's Ceramic Piston Skirt ...

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    $4,875.00
    $4,875.00 - $4,875.00
    $4,875.00
    $4,729.00
    $4,729.00 - $4,729.00
    $4,729.00
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    GM Common Rail Gorilla Girdle For 01-10 6.6L LB7 LLY LBZ LLM Duramax 14mm Industrial Injection

    Industrial Injection
    $2,384.00
    $2,384.00 - $2,384.00
    $2,384.00
    $2,312.00
    $2,312.00 - $2,312.00
    $2,312.00

    Industrial Injection Model: PDM-0603514mm Duramax Gorilla Girdle Kit (LB7,LLY,LBZ,LMM)The thick Gorilla Girdle is the strongest girdle on the marke...

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    $2,384.00
    $2,384.00 - $2,384.00
    $2,384.00
    $2,312.00
    $2,312.00 - $2,312.00
    $2,312.00
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    GM Remanufactured Heads For 2004.5-2005 LLY 6.6L Duramax Industrial Injection

    Industrial Injection
    $2,556.00
    $2,556.00 - $2,556.00
    $2,556.00
    $2,479.00
    $2,479.00 - $2,479.00
    $2,479.00

    Industrial Injection Model: PDM-LLYSHThe Industrial Injection LLY Duramax Stock Remanufactured Heads are designed to be a factory replacement. Comp...

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    $2,556.00
    $2,556.00 - $2,556.00
    $2,556.00
    $2,479.00
    $2,479.00 - $2,479.00
    $2,479.00
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    Fleece Performance 01-13 GM Duramax 6.6L Duramax Turbo Thermostat Delete Plug

    Fleece Performance
    $0.00 - $0.00
    $0.00
    $56.00
    $56.00 - $56.00
    $56.00

    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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    $0.00 - $0.00
    $0.00
    $56.00
    $56.00 - $56.00
    $56.00
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    Firestone Level Command Single Mechanical Height Sensor Kit (WR17602186)

    Firestone
    $446.00
    $446.00 - $446.00
    $446.00
    $340.00
    $340.00 - $340.00
    $340.00

    Firestone manufactures and provides air springs for all vehicles. We began developing air suspension for passenger cars and trucks more than 70 yea...

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    $446.00
    $446.00 - $446.00
    $446.00
    $340.00
    $340.00 - $340.00
    $340.00
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    Firestone Level Command Dual Mechanical Height Sensor Kit (WR17602017)

    Firestone
    $846.00
    $846.00 - $846.00
    $846.00
    $644.00
    $644.00 - $644.00
    $644.00

    These Firestone dual automatic air command system kits inflate both air helper springs individually. Gain total control over your air springs by pi...

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    $846.00
    $846.00 - $846.00
    $846.00
    $644.00
    $644.00 - $644.00
    $644.00
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    BD Diesel Remote Fuel Filter Replacement Cartridge - 1050060 Kit

    BD Diesel
    $57.00 - $57.00
    $57.00
    $62.00
    $62.00 - $62.00
    $62.00

    The OEM fuel filter was designed to provide adequate flow and filtration at the stock horsepower level, but simply does not have enough surface are...

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    $57.00 - $57.00
    $57.00
    $62.00
    $62.00 - $62.00
    $62.00
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    BD Diesel Turbo Turnbuckle - 5/16NF Rod w/Pin 2001-2004 LB7 w/Aftermarket Turbo or Wastegate

    BD Diesel
    $83.00 - $83.00
    $83.00
    $90.00
    $90.00 - $90.00
    $90.00

    Cut from stainless steel to prevent corrosion and the swivel design avoids oil return drains and rubbing. The Turbo Waste Gate Turnbuckle is now at...

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    $83.00 - $83.00
    $83.00
    $90.00
    $90.00 - $90.00
    $90.00
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    Wehrli 01-04 Chevrolet Duramax LB7 4in Intake Kit

    Wehrli
    $0.00 - $0.00
    $0.00
    $772.00
    $772.00 - $772.00
    $772.00

    Wehrli Model WCF100190 WCFab 2001-2004 GM LB7 6.6L Duramax 4" Intake Kit with Air Box. This high flow, fabricated aluminum intake pipe and air box ...

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    $0.00 - $0.00
    $0.00
    $772.00
    $772.00 - $772.00
    $772.00
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    Fleece Performance 01-04 GM 2500/3500 6.6L LB7 Duramax SureFlo Performance Sending Unit

    Fleece Performance
    $0.00 - $0.00
    $0.00
    $554.00
    $554.00 - $554.00
    $554.00

    Fleece Performance Model FPE-SF-GM-0104Problem: If you are running an aftermarket pump that is mounted external of the fuel tank, you will need to ...

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    $0.00 - $0.00
    $0.00
    $554.00
    $554.00 - $554.00
    $554.00
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    Wehrli 01-04 Chevrolet 6.6L LB7 Duramax S400 Twin Turbo Kit (No Turbo)

    Wehrli
    $0.00 - $0.00
    $0.00
    $4,895.00
    $4,895.00 - $4,895.00
    $4,895.00

    Wehrli Model WCF1005702001-2004 LB7 Duramax S400/Stock Compound Turbo Kit (NO TURBO). 1000 RWHP capable depending upon turbo and fuel system modifi...

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    $0.00 - $0.00
    $0.00
    $4,895.00
    $4,895.00 - $4,895.00
    $4,895.00
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    Wehrli 01-04 Chevrolet 6.6L Duramax LB7 2in Stainless Passenger Side Up Pipe w/Gaskets (Twin Turbo)

    Wehrli
    $0.00 - $0.00
    $0.00
    $489.00
    $489.00 - $489.00
    $489.00

    Wehrli Model WCF100648Wehrli 01-04 Chevrolet 6.6L Duramax LB7 2in Stainless Passenger Side Up Pipe w/Gaskets (Twin Turbo) Replace the lightweight, ...

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    $0.00 - $0.00
    $0.00
    $489.00
    $489.00 - $489.00
    $489.00
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    Wehrli 01-04 Chevrolet 6.6L Duramax LB7 2in Stainless Up Pipe Kit w/Gaskets - Twin Turbo ONLY*

    Wehrli
    $0.00 - $0.00
    $0.00
    $906.00
    $906.00 - $906.00
    $906.00

    Wehrli Model WCF100589 Wehrli 01-16 Chevrolet 6.6L Duramax 2in Stainless Up Pipe Kit w/Gaskets - Twin Turbo Replace the lightweight, leak-prone, 1 ...

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    $0.00 - $0.00
    $0.00
    $906.00
    $906.00 - $906.00
    $906.00
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    Wehrli 01-04 Chevrolet 6.6L LB7 Duramax S300 Turbo Install Kit (No Turbo)

    Wehrli
    $0.00 - $0.00
    $0.00
    $4,668.00
    $4,668.00 - $4,668.00
    $4,668.00

    Wehrli Model WCF100478 This kit will allow you to install an S300-based Turbo on your LB7 Duramax. Replacing all OEM plumbing and y-bridge with hig...

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    $0.00 - $0.00
    $0.00
    $4,668.00
    $4,668.00 - $4,668.00
    $4,668.00
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    Mishimoto Intercooler Kit With Pipes & Boots 2002-2004* LB7 Duramax 6.6L

    Mishimoto
    $2,565.00
    $2,565.00 - $2,565.00
    $2,565.00
    $2,331.00
    $2,331.00 - $2,331.00
    $2,331.00

    Mishimoto Intercooler Kit With Pipes & Boots 2002-2004* LB7 Duramax 6.6L Black Intercooler With Polished Pipe Kit. Mishimoto is expanding thei...

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    $2,565.00
    $2,565.00 - $2,565.00
    $2,565.00
    $2,331.00
    $2,331.00 - $2,331.00
    $2,331.00
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    Mishimoto Intercooler Kit With Pipes & Boots 2002-2004* LB7 Duramax 6.6L - Silver

    Mishimoto
    $2,565.00
    $2,565.00 - $2,565.00
    $2,565.00
    $2,331.00
    $2,331.00 - $2,331.00
    $2,331.00

    Mishimoto Intercooler Kit With Pipes & Boots 2002-2004* LB7 Duramax 6.6L Silver Intercooler With Polished Pipe Kit. Mishimoto is expanding the...

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    $2,565.00
    $2,565.00 - $2,565.00
    $2,565.00
    $2,331.00
    $2,331.00 - $2,331.00
    $2,331.00
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    Mishimoto Upper & Lower Silicone Radiator Hose Kit 2001-2005 Duramax 6.6L - Red

    Mishimoto
    $515.00
    $515.00 - $515.00
    $515.00
    $468.00
    $468.00 - $468.00
    $468.00

    Mishimoto Upper & Lower Silicone Radiator Hose Kit 2001-2005 Duramax 6.6L Mishimoto's Duramax coolant hose kits are constructed from a combinat...

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    $515.00
    $515.00 - $515.00
    $515.00
    $468.00
    $468.00 - $468.00
    $468.00
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    Fleece 01-04 GM 2500/3500 Duramax LB7 Fuel Injection Line (4 & 5)

    Fleece Performance
    $0.00 - $0.00
    $0.00
    $101.00
    $101.00 - $101.00
    $101.00

    Fleece Performance Model FPE-FL-LB7-45Original LB7 Injection lines will corrode and break and are a leading cause of contamination when changing th...

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    $0.00 - $0.00
    $0.00
    $101.00
    $101.00 - $101.00
    $101.00
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    Fleece Performance 01-02 GM Duramax 6.6L LB7 Allison TapShifter

    Fleece Performance
    $0.00 - $0.00
    $0.00
    $583.00
    $583.00 - $583.00
    $583.00

    Fleece Performance Model FPE-TAPSHIFTER12Replacement coolant bypass house with stainless steel braiding for our Common Rail/VP44 Cummins Coolant By...

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    $0.00 - $0.00
    $0.00
    $583.00
    $583.00 - $583.00
    $583.00
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    Fleece Performance 01-04 GM 2500/3500 Duramax LB7 Outer Injector Connector Pigtail

    Fleece Performance
    $0.00 - $0.00
    $0.00
    $44.00
    $44.00 - $44.00
    $44.00

    Fleece Performance Model FPE-HAR-DMAX-LB7-INJ-PTReplacement connector with 6 inch pigtail for use on the 6.6L Duramax engine and other vehicle appl...

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    $0.00 - $0.00
    $0.00
    $44.00
    $44.00 - $44.00
    $44.00

The LB7 is the original 6.6L Duramax, built by GM and Isuzu for 2001 to 2004 Chevy Silverado HD and GMC Sierra HD trucks. It has a cast iron block, aluminum heads, a Bosch CP3 pump and no DPF, EGR or DEF, which makes it a great platform to build.

Shop LB7 Duramax Parts by Category

Common LB7 Duramax Problems

Injectors are the big LB7 issue. Worn injectors leak fuel into the crankcase, so check your oil level for rising fuel. Fuel filter head air leaks and valve cover gasket leaks are also common.

Not sure what fits? Send us your VIN and we will match the right part. Shop the full line of Duramax parts.

LB7 Duramax FAQ

What years is the LB7 Duramax?

The LB7 was used in 2001 to 2004 Chevy Silverado HD and GMC Sierra HD 2500 and 3500 trucks.

What is the most common LB7 Duramax problem?

Injector failure. Worn LB7 injectors can leak fuel into the oil, cause smoke and rough running, and are the most common major LB7 repair.

How do I know if my truck has an LB7?

The 8th digit of the VIN is 1 on LB7 trucks. You can also check the RPO code sticker in the glove box.

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