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LLY Duramax Parts

Parts for the LLY Duramax (2004.5 to 2005).

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  • Pro Form Fab 2003-2013 3rd Gen Dodge 2500/3500 Rear Integrated Bump Stop Lift Blocks

    Pro Form Fab
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $139.95
    $139.95 - $249.95
    Current price $139.95

    2003-2013 3rd Gen Dodge 2500/3500 Product Description: We are proud to bring you our Heavy Duty fabricated rear lift blocks. These CNC cut, jig...

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    Original price $0.00 - Original price $0.00
    Original price $0.00
    $139.95
    $139.95 - $249.95
    Current price $139.95
  • Rough Country M1R Monotube Rear Shocks | 3-6.5" | Chevy/GMC 2500 SUV 2WD/4WD (2000-2010)

    Rough Country
    Original price $349.95 - Original price $349.95
    Original price
    $349.95
    $349.95 - $349.95
    Current price $349.95

    Rough Country Model 770738RES_JUnmatched Control. Maximum Performance: Rough Country's M1R Monotube Shocks with External Reservoir deliver the perf...

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    Original price $349.95 - Original price $349.95
    Original price
    $349.95
    $349.95 - $349.95
    Current price $349.95
  • XDP Barometric Pressure Sensor 2001 GM 6.6L Duramax LB7/2003-2005 GM 6.6L Duramax LB7/LLY XD1013

    XDP
    Original price $34.95 - Original price $34.95
    Original price
    $34.95
    $34.95 - $34.95
    Current price $34.95

    XDP Model XD1013The XDP Barometric Pressure Sensor XD1013 will help get your GM Silverado/Sierra 6.6L Duramax LB7/LLY up and running again. All XDP...

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    Original price $34.95 - Original price $34.95
    Original price
    $34.95
    $34.95 - $34.95
    Current price $34.95
  • FASS Duramax Filter Delete DFD-4000

    FASS Fuel Systems
    Original price $88.15
    Original price $88.15 - Original price $88.15
    Original price $88.15
    Current price $83.74
    $83.74 - $83.74
    Current price $83.74

    FASS Fuel Systems Model DFD4000FASS Duramax Filter Delete DFD-4000

    Original price $88.15
    Original price $88.15 - Original price $88.15
    Original price $88.15
    Current price $83.74
    $83.74 - $83.74
    Current price $83.74
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  • ARP 01-10 6.6L GM Duramax Diesel Head Stud Kit

    ARP
    Original price $814.20 - Original price $814.20
    Original price
    $814.20
    $814.20 - $814.20
    Current price $814.20

    ARP Model 230-4201ARP 01-10 6.6L GM Duramax Diesel Head Stud KitThis Part Fits: Year Make Model Submodel 2006-2013 Chevrolet Express 2500 Base ...

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    Original price $814.20 - Original price $814.20
    Original price
    $814.20
    $814.20 - $814.20
    Current price $814.20
  • Mishimoto Steel Spiked Lug Nuts M14 x 1.5 32pc Set Blue

    Mishimoto
    Original price $122.00
    Original price $122.00 - Original price $122.00
    Original price $122.00
    Current price $110.95
    $110.95 - $110.95
    Current price $110.95

    Mishimoto Model MMLG-SP1415-32BLThe details matter when you're building your dream car. Every bolt is meticulously chosen for not only function, bu...

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    Original price $122.00
    Original price $122.00 - Original price $122.00
    Original price $122.00
    Current price $110.95
    $110.95 - $110.95
    Current price $110.95
    Save 9% Save %
  • Wehrli Big Hitch Products License Plate Mount Bracket

    Wehrli
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $92.00
    $92.00 - $92.00
    Current price $92.00

    Wehrli Big Hitch Products Model BHP4009 - Includes component for BHP 2" or 2.5" receiver behind roll pan hitches- Includes hardware for mounting ...

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    Original price $0.00 - Original price $0.00
    Original price $0.00
    $92.00
    $92.00 - $92.00
    Current price $92.00
  • Wehrli Big Hitch Products Clamp On Sled Stops - BEHIND Roll Pan

    Wehrli
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $320.00
    $320.00 - $320.00
    Current price $320.00

    Wehrli Big Hitch Products Model BHP3001 Protect your trucks sheet metal from damage- Clamps to any of our BEHIND roll pan receiver hitches- All ne...

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    Original price $0.00 - Original price $0.00
    Original price $0.00
    $320.00
    $320.00 - $320.00
    Current price $320.00
  • Stock+ Power Steering Gearbox 2001-2007 Chevrolet Silverado/GMC Sierra 2500/3500HD XDP Xtreme Diesel Performance

    XDP
    Original price $728.95 - Original price $728.95
    Original price
    $728.95
    $728.95 - $728.95
    Current price $728.95

    Replace the worn steering gear in your Chevy Silverado or GMC Sierra 2500HD/3500HD with the XDP Stock+ Power Steering Gearbox (New) XD746. The most...

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    Original price $728.95 - Original price $728.95
    Original price
    $728.95
    $728.95 - $728.95
    Current price $728.95
  • S&S Diesel Motorsport LLY Duramax (2004.5-2005) Injectors -Set

    S&S
    Original price $3,421.60 - Original price $6,624.80
    Original price
    $3,421.60
    $3,421.60 - $6,624.80
    Current price $3,421.60

    (SET) S&S Upgrades Proprietary nozzle honing process for clean and consistent holes Nozzles flow-matched to 1% variance per set, using OE st...

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    Original price $3,421.60 - Original price $6,624.80
    Original price
    $3,421.60
    $3,421.60 - $6,624.80
    Current price $3,421.60
  • S&S Diesel Motorsport Duramax 12mm CP3 (1,590 mm3 /rev displacement) -New

    S&S
    Original price $2,500.00 - Original price $2,500.00
    Original price
    $2,500.00
    $2,500.00 - $2,500.00
    Current price $2,500.00

    S&S Model CP3-DMX-12S&S Diesel Motorsport Duramax 12mm CP3 (1,590 mm3 /rev displacement) | New LBZ-based. 2001-2010 Duramax Trucks 2001-200...

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    Original price $2,500.00 - Original price $2,500.00
    Original price
    $2,500.00
    $2,500.00 - $2,500.00
    Current price $2,500.00
  • S&S Diesel Motorsport Low Pressure Injector Return Line Assembly-RH Side LLY/LBZ/LMM

    S&S
    Original price $50.00 - Original price $50.00
    Original price
    $50.00
    $50.00 - $50.00
    Current price $50.00

    S&S Model DMAX-INJ-RTN-RHS&S Diesel Motorsport Low Pressure Injector Return Line Assembly-RH Side LLY/LBZ/LMM

    Original price $50.00 - Original price $50.00
    Original price
    $50.00
    $50.00 - $50.00
    Current price $50.00
  • S&S Diesel Motorsport DBV4 Single Stage Relief Valve Innternal Return LLY/LBZ/LMM, 6.7 Style - 2700bar

    S&S
    Original price $318.50 - Original price $318.50
    Original price
    $318.50
    $318.50 - $318.50
    Current price $318.50

    S&S Model PRV-I-2700-1SDBV4 Single Stage Relief Valve Innternal Return LLY/LBZ/LMM, 6.7 style - 2700bar Generic Image

    Original price $318.50 - Original price $318.50
    Original price
    $318.50
    $318.50 - $318.50
    Current price $318.50
  • S&S Diesel Motorsport DBV4 Single Stage Relief Valve Internal Return, LLY/LBZ/LMM, 6.7 style - 2200bar

    S&S
    Original price $318.50 - Original price $318.50
    Original price
    $318.50
    $318.50 - $318.50
    Current price $318.50

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

    Original price $318.50 - Original price $318.50
    Original price
    $318.50
    $318.50 - $318.50
    Current price $318.50
  • S&S Diesel Motorsport DBV4 2 Stage Relief Valve Internal Return LLY/LBZ/LMM Style 2400 Bar

    S&S
    Original price $286.00 - Original price $286.00
    Original price
    $286.00
    $286.00 - $286.00
    Current price $286.00

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

    Original price $286.00 - Original price $286.00
    Original price
    $286.00
    $286.00 - $286.00
    Current price $286.00
  • Yukon Unit Bearing & Hub Assembly for 99-14 GM 1/2 Ton Front

    Yukon Gear & Axle
    Original price $227.89 - Original price $227.89
    Original price
    $227.89
    $227.89 - $227.89
    Current price $227.89

    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 $227.89 - Original price $227.89
    Original price
    $227.89
    $227.89 - $227.89
    Current price $227.89
  • 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
    $99.99
    $99.99 - $99.99
    Current price $99.99

    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
    $99.99
    $99.99 - $99.99
    Current price $99.99
  • 6 Inch Lift Kit | Chevy/GMC Sierra/Silverado 2500 4WD (1999-2004)

    Rough Country
    Original price $1,299.95 - Original price $1,299.95
    Original price
    $1,299.95
    $1,299.95 - $1,299.95
    Current price $1,299.95

    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 $1,299.95 - Original price $1,299.95
    Original price
    $1,299.95
    $1,299.95 - $1,299.95
    Current price $1,299.95
  • M14 x 1.5 Lug Nut Set of 32 | Chrome | Open End

    Rough Country
    Original price $39.95 - Original price $39.95
    Original price
    $39.95
    $39.95 - $39.95
    Current price $39.95

    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 $39.95 - Original price $39.95
    Original price
    $39.95
    $39.95 - $39.95
    Current price $39.95
  • 2 Inch Leveling Kit | Chevy/GMC 2500HD (01-10)

    Rough Country
    Original price $79.95 - Original price $99.95
    Original price
    $79.95
    $79.95 - $99.95
    Current price $79.95

    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 $79.95 - Original price $99.95
    Original price
    $79.95
    $79.95 - $99.95
    Current price $79.95
  • 2" Rear Block Kit - GM Truck

    ReadyLift
    Original price $169.95 - Original price $169.95
    Original price
    $169.95
    $169.95 - $169.95
    Current price $169.95

    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 $169.95 - Original price $169.95
    Original price
    $169.95
    $169.95 - $169.95
    Current price $169.95
  • Wehrli LB7/LLY/LBZ/LMM Duramax Upper Coolant Pipe Plug

    Wehrli
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $40.74
    $40.74 - $40.74
    Current price $40.74

    Wehrli Model WCF205-280Wehrli LB7/LLY/LBZ/LMM Duramax Upper Coolant Pipe Plug

    Original price $0.00 - Original price $0.00
    Original price $0.00
    $40.74
    $40.74 - $40.74
    Current price $40.74
  • Wehrli LLY / LBZ / LMM Duramax Turbo Compressor Inlet Billet Steel Flange

    Wehrli
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $38.80
    $38.80 - $38.80
    Current price $38.80

    Wehrli Model WCF205-81Wehrli LLY / LBZ / LMM Duramax Turbo Compressor Inlet Billet Steel Flange

    Original price $0.00 - Original price $0.00
    Original price $0.00
    $38.80
    $38.80 - $38.80
    Current price $38.80
  • Cold Air Intake For 04-05 Chevrolet Silverado GMC Sierra V8-6.6L LLY Duramax S&B

    S&B
    Original price $379.00 - Original price $379.00
    Original price
    $379.00
    $379.00 - $379.00
    Current price $379.00

    Maximum Performance Our cold air intake for the 2004-2005 Chevy / GMC Duramax LLY 6.6L was engineered to minimize air restriction and flows 44.63 p...

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    Original price $379.00 - Original price $379.00
    Original price
    $379.00
    $379.00 - $379.00
    Current price $379.00

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.

Powerhouse Diesel