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LLY Duramax Parts

Parts for the LLY Duramax (2004.5 to 2005).

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  • DDP Duramax 04.5-05 LLY Reman Injector Set - 75 (30% Over)

    DDP
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $3,990.00
    $3,990.00 - $3,990.00
    Current price $3,990.00

    DDP Model DDPLLY-75Duramax 04.5-05 LLY Injector Set: Remanufactured injector set flowing at 30 percent over, capable of 675 RWHP with proper suppor...

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    Original price $0.00 - Original price $0.00
    Original price $0.00
    $3,990.00
    $3,990.00 - $3,990.00
    Current price $3,990.00
  • DDP Duramax 04.5-05 LLY Reman Injector Set - 50 (20% Over)

    DDP
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $3,895.00
    $3,895.00 - $3,895.00
    Current price $3,895.00

    DDP Model DDPLLY-50Duramax 04.5-05 LLY Injector Set: Remanufactured injector set flowing at 20 percent over, approximately 50 RWHP over stock. Inje...

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    Original price $0.00 - Original price $0.00
    Original price $0.00
    $3,895.00
    $3,895.00 - $3,895.00
    Current price $3,895.00
  • DDP Duramax 04.5-05 LLY Reman Injector Set - 60% Over

    DDP
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $4,180.00
    $4,180.00 - $4,180.00
    Current price $4,180.00

    DDP Model DDPLLY-150Duramax 04.5-05 LLY Injector Set: Remanufactured injector set, Nozzles flow at 60 percent over and the injectors have had inter...

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    Original price $0.00 - Original price $0.00
    Original price $0.00
    $4,180.00
    $4,180.00 - $4,180.00
    Current price $4,180.00
  • DDP Duramax 04.5-05 LLY Reman Stock CP3

    DDP
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $869.25
    $869.25 - $869.25
    Current price $869.25

    DDP Model DDPCP3-308Duramax 04.5-05 LLY: Replacement remanufactured Stock CP3 injection pump. Details: Liter: 6.6 Engine: LLY Duramax Years: 2004....

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    Original price $0.00 - Original price $0.00
    Original price $0.00
    $869.25
    $869.25 - $869.25
    Current price $869.25
  • BD Diesel 2004.5-2006 Chevy/GMC Duramax LLY Premium Stock Injector (0986435504)

    BD Diesel
    Original price $387.95 - Original price $387.95
    Original price $387.95
    $396.95
    $396.95 - $396.95
    Current price $396.95

    BD-Built Stock Premium replacement injectors are assembled using Bosch procedures and fully calibrated and tested to ensure perfect operation. Buil...

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    Original price $387.95 - Original price $387.95
    Original price $387.95
    $396.95
    $396.95 - $396.95
    Current price $396.95
  • BD Diesel 2004.5-2006 Chevy Duramax LLY Stock Performance Plus Injector (0986435504)

    BD Diesel
    Original price $319.47 - Original price $319.47
    Original price $319.47
    $365.95
    $365.95 - $365.95
    Current price $365.95

    BD Diesel's OE quality stock replacement 'Plus' injectors are assembled with the same exacting standards as our highest performance injectors, usin...

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    Original price $319.47 - Original price $319.47
    Original price $319.47
    $365.95
    $365.95 - $365.95
    Current price $365.95
  • BD Diesel 2004.5-2006 Chevy Duramax LLY Premium Performance Plus Injector (0986435504)

    BD Diesel
    Original price $418.99 - Original price $418.99
    Original price $418.99
    $427.95
    $427.95 - $427.95
    Current price $427.95

    BD Diesel Performance is unique among its peers in that it designs, manufactures and distributes a wide range of products specifically engineered f...

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    Original price $418.99 - Original price $418.99
    Original price $418.99
    $427.95
    $427.95 - $427.95
    Current price $427.95
  • BD Diesel Remanufactured Stock CP3 Injection Pump 2004.5-2005 LLY Duramax 6.6L

    BD Diesel
    Original price $823.48 - Original price $823.48
    Original price $823.48
    $883.95
    $883.95 - $883.95
    Current price $883.95

    Fits: 2004 to 2005 Chevrolet Silverado 2500 HD; 2004 to 2005 Chevrolet Silverado 3500; 2004 to 2005 GMC Sierra 2500 HD; 2004 to 2005 GMC Sierra 350...

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    Original price $823.48 - Original price $823.48
    Original price $823.48
    $883.95
    $883.95 - $883.95
    Current price $883.95
  • BD Diesel Valve Body - 2004-2006 Duramax LLY Allison 1000

    BD Diesel
    Original price $1,144.55 - Original price $1,144.55
    Original price $1,144.55
    $1,225.95
    $1,225.95 - $1,225.95
    Current price $1,225.95

    BD Diesel Valve Body - 2004-2006 Duramax LLY Allison 1000 BD's exchange valve bodies are modified, tuned and tested to provide optimum performance ...

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    Original price $1,144.55 - Original price $1,144.55
    Original price $1,144.55
    $1,225.95
    $1,225.95 - $1,225.95
    Current price $1,225.95
  • Exergy 04.5-05 Chevrolet Duramax 6.6L LLY Reman Sportsman Injector - Set of 8

    Exergy
    Original price $3,392.00 - Original price $3,392.00
    Original price
    $3,392.00
    $3,392.00 - $3,392.00
    Current price $3,392.00

    Exergy Model E01 10202Exergy 04.5-05 Chevrolet Duramax 6.6L LLY Reman Sportsman Injector 8 Reman Sportsman Injectors Injector Coppers and O-ring...

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    Original price $3,392.00 - Original price $3,392.00
    Original price
    $3,392.00
    $3,392.00 - $3,392.00
    Current price $3,392.00
  • Exergy 04.5-05 Chevrolet Duramax 6.6L LLY 10mm Stroker CP3 Pump (LBZ Based)

    Exergy
    Original price $2,150.00 - Original price $2,150.00
    Original price
    $2,150.00
    $2,150.00 - $2,150.00
    Current price $2,150.00

    Exergy Model E04 10206Exergy 04.5-05 Chevrolet Duramax 6.6L LLY 10mm Stroker CP3 Pump (LBZ Based) Do you want the capability of more power without ...

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    Original price $2,150.00 - Original price $2,150.00
    Original price
    $2,150.00
    $2,150.00 - $2,150.00
    Current price $2,150.00
  • Fleece 04-05 GM 2500/3500 Duramax High Pressure Injection Line Kit

    Fleece Performance
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $489.00
    $489.00 - $489.00
    Current price $489.00

    Fleece Performance Model FPE-FL-DMAX-LLY-SETLLY Duramax High Pressure Injection Line Kit. Replacement high pressure fuel lines from Fleece Performa...

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    Original price $0.00 - Original price $0.00
    Original price $0.00
    $489.00
    $489.00 - $489.00
    Current price $489.00
  • Exergy 04.5-05 Chevrolet Duramax 6.6L LLY Sportsman CP3 Pump (LBZ Based)

    Exergy
    Original price $1,270.00 - Original price $1,270.00
    Original price
    $1,270.00
    $1,270.00 - $1,270.00
    Current price $1,270.00

    Exergy Model E04 10205Exergy 04.5-05 Chevrolet Duramax 6.6L LLY Sportsman CP3 Pump (LBZ Based) Are you in need of a factory replacement CP3 pump? D...

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    Original price $1,270.00 - Original price $1,270.00
    Original price
    $1,270.00
    $1,270.00 - $1,270.00
    Current price $1,270.00
  • GM Remanufactured Injector For 2004.5-2005 6.6L LLY Duramax Stock Industrial Injection

    Industrial Injection
    Original price $279.95
    Original price $279.95 - Original price $279.95
    Original price $279.95
    Current price $271.55
    $271.55 - $271.55
    Current price $271.55

    Industrial Injection Model: 0986435504SE-IISThe Industrial Injection Stock Reman Injectors are a perfect replacement injector for someone looking f...

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    Original price $279.95
    Original price $279.95 - Original price $279.95
    Original price $279.95
    Current price $271.55
    $271.55 - $271.55
    Current price $271.55
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  • Kryptonite Torsion Key Unloading Tool For 1988 to 2025 Universal Chevy/GMC Fit

    Kryptonite
    Original price $151.99 - Original price $151.99
    Original price
    $151.99
    $151.99 - $151.99
    Current price $151.99

    Fits:1988–2025 Chevy/GMC 1500HD / 2500HD / 3500 Trucks, Also fits: 1999–2006 GM 1500 Trucks & SUVs Universal Fit – Compatible with most GM tru...

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    Original price $151.99 - Original price $151.99
    Original price
    $151.99
    $151.99 - $151.99
    Current price $151.99
  • GM HX Series Main Bearings For 01-16 6.6L Duramax Industrial Injection

    Industrial Injection
    Original price $391.95
    Original price $391.95 - Original price $391.95
    Original price $391.95
    Current price $380.19
    $380.19 - $380.19
    Current price $380.19

    Industrial Injection Model: PDM-MS-2218HXC2001-2016 Duramax Hx Series Main Bearings (Std +.001) Coated. These H and HX Clevite bearings were develo...

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    Original price $391.95
    Original price $391.95 - Original price $391.95
    Original price $391.95
    Current price $380.19
    $380.19 - $380.19
    Current price $380.19
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  • GM H Series Rod Bearing Set For 01-16 Duramax Industrial Injection

    Industrial Injection
    Original price $548.95
    Original price $548.95 - Original price $548.95
    Original price $548.95
    Current price $532.48
    $532.48 - $532.48
    Current price $532.48

    Industrial Injection Model: PDM-CB-1805HC2001-2016 Duramax H Series Rod Bearings (Std .025) Coated Set. These H and HX Clevite bearings were devel...

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    Original price $548.95
    Original price $548.95 - Original price $548.95
    Original price $548.95
    Current price $532.48
    $532.48 - $532.48
    Current price $532.48
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  • Industrial Injection 01-16 Chevrolet Duramax Grade C Head Gasket (Right Side)

    Industrial Injection
    Original price $86.48 - Original price $86.48
    Original price
    $86.48
    $86.48 - $86.48
    Current price $86.48

    Industrial Injection 2001 to 2016 Chevrolet Duramax Grade C Head Gasket (Right Side). Sold and shipped by Powerhouse Diesel, a diesel repair and pe...

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    Original price $86.48 - Original price $86.48
    Original price
    $86.48
    $86.48 - $86.48
    Current price $86.48
  • GM H Series Main Bearings For 01-16 6.6L Duramax Industrial Injection

    Industrial Injection
    Original price $390.95
    Original price $390.95 - Original price $390.95
    Original price $390.95
    Current price $379.22
    $379.22 - $379.22
    Current price $379.22

    Industrial Injection Model: PDM-MS-2218HC2001-2016 Duramax H Series Main Bearings (Std .025) Coated. These H and HX Clevite bearings were developed...

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    Original price $390.95
    Original price $390.95 - Original price $390.95
    Original price $390.95
    Current price $379.22
    $379.22 - $379.22
    Current price $379.22
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  • GM Rocker Arm Spacer Kit For 01-16 Duramax Industrial Injection

    Industrial Injection
    Original price $236.95
    Original price $236.95 - Original price $236.95
    Original price $236.95
    Current price $229.84
    $229.84 - $229.84
    Current price $229.84

    Industrial Injection Model: PDM-07184The Duramax Rocker Spacer Kit was designed to eliminate the factory springs in between the rockers to keep the...

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    Original price $236.95
    Original price $236.95 - Original price $236.95
    Original price $236.95
    Current price $229.84
    $229.84 - $229.84
    Current price $229.84
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  • XDP Remanufactured LLY Fuel Injector XD494 For 2004.5-2005 GM 6.6L Duramax LLY

    XDP
    Original price $260.95 - Original price $260.95
    Original price
    $260.95
    $260.95 - $260.95
    Current price $260.95

    XDP Model XD494Maintain the factory function of the fuel system on your Duramax with the XDP Remanufactured LLY Fuel Injector (Stock HP) XD494. Wit...

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    Original price $260.95 - Original price $260.95
    Original price
    $260.95
    $260.95 - $260.95
    Current price $260.95
  • XDP Connecting Rod Bolt Kit 2001-2010 GM 6.6L Duramax

    XDP
    Original price $209.95 - Original price $209.95
    Original price
    $209.95
    $209.95 - $209.95
    Current price $209.95

    XDP Model XD3019RBUpgrade the factory connecting rod bolts on your 2001-2010 GM 6.6L Duramax LB7/LLY/LBZ/LMM with the XDP Connecting Rod Bolt Kit X...

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    Original price $209.95 - Original price $209.95
    Original price
    $209.95
    $209.95 - $209.95
    Current price $209.95
  • XDP Remanufactured CP3 Fuel Pump 2004.5-2005 GM 6.6L Duramax LLY

    XDP
    Original price $669.95 - Original price $669.95
    Original price
    $669.95
    $669.95 - $669.95
    Current price $669.95

    XDP Model XD522 Purchase the Remanufactured CP3 Fuel Pump (Stock Replacement) XD522 and replace the underperforming pump on your 2004.5-2005 GM 6....

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    Original price $669.95 - Original price $669.95
    Original price
    $669.95
    $669.95 - $669.95
    Current price $669.95
  • XDP Low-Profile Plastic Creeper XD395

    XDP
    Original price $109.95 - Original price $109.95
    Original price
    $109.95
    $109.95 - $109.95
    Current price $109.95

    XDP Model XD395Low-Profile Plastic Creeper Warranty Info: 2 Year / Unlimited Mileage

    Original price $109.95 - Original price $109.95
    Original price
    $109.95
    $109.95 - $109.95
    Current price $109.95

The LLY Duramax powered 2004.5 to 2005 Chevy Silverado HD and GMC Sierra HD trucks. It was the first Duramax with a variable geometry turbo and EGR, which helps it spool faster than the LB7.

Shop LLY Duramax Parts by Category

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

LLY Duramax FAQ

What is different about the LLY versus the LB7?

The LLY added a variable geometry turbo and EGR for faster spool and lower emissions.

Are LLY trucks known for overheating?

Some early LLY trucks ran hotter under load. Upgraded cooling parts are a common fix for trucks that tow heavy.