Skip to content
Free Shipping on most orders over $150.00                    
Free Shipping on most orders over $150.00                    

LLY Duramax Parts

Parts for the LLY Duramax (2004.5 to 2005).

Filters

  • Photo - Close Up Photo - Primary

    Cognito 01-13 Chevy/GMC Silverado/Sierra 2500/3500 HD 2WD/4WD Ball Joint SM Series UCA Kit

    Cognito
    $629.95 - $629.95
    $629.95
    $629.95 - $629.95
    $629.95

    Cognito Part # - 110-90290The Cognito Ball Joint SM Series Upper Control Arms add style, function, and performance to your vehicle by improving the...

    View full details
    $629.95 - $629.95
    $629.95
    $629.95 - $629.95
    $629.95
  • Photo - Primary Photo - Primary

    Cognito 99-16 Chevy/GMC Silverado/Sierra 2500/3500 HD CV Front Driveline Kit for 4-6in Lift

    Cognito
    $699.95 - $699.95
    $699.95
    $699.95 - $699.95
    $699.95

    Cognito Part # - 210-91023Cognito CV Front Driveline Kit For 4-6 Inch Lift-Duramax/ 4-12 Inch Lift-Gas On 01-16 Silverado/Sierra 2500/3500/ 7-12 In...

    View full details
    $699.95 - $699.95
    $699.95
    $699.95 - $699.95
    $699.95
  • Photo - Primary Photo - Primary

    Cognito 99-19 Chevy/GMC Silverado/Sierra 1500/2500/3500 2WD/4WD 4 Degree Rear Pinion Angle Shim Kit

    Cognito
    $69.95 - $69.95
    $69.95
    $69.95 - $69.95
    $69.95

    Cognito Part # - 210-90468Used with short wheel base trucks with tall lift where no tapered blocks were available.Includes 2 shims and 2 center pin...

    View full details
    $69.95 - $69.95
    $69.95
    $69.95 - $69.95
    $69.95
  • Photo - Primary Photo - Primary

    Cognito 99-19 Chevy/GMC Silverado/Sierra 1500/2500/3500 2WD/4WD 3 Degree Rear Pinion Angle Shim Kit

    Cognito
    $69.95 - $69.95
    $69.95
    $69.95 - $69.95
    $69.95

    Cognito Part # - 210-90467Used with short wheel base trucks with tall lift where no tapered blocks were available.Includes 2 shims and 2 center pin...

    View full details
    $69.95 - $69.95
    $69.95
    $69.95 - $69.95
    $69.95
  • Photo - Primary Photo - Primary

    Cognito 01-24 Chevy Silv/Sierra 2500/3500 HD / Ford F250/350 SD 4WD Carrier Bearing Spacer 3-4 Inch

    Cognito
    $96.25 - $96.25
    $96.25
    $96.25 - $96.25
    $96.25

    Cognito Part # - 199-90189Cognito 01-24 Chevy Silv/Sierra 2500/3500 HD / Ford F250/350 SD 4WD Carrier Bearing Spacer 3-4 InchThis Part Fits: Year ...

    View full details
    $96.25 - $96.25
    $96.25
    $96.25 - $96.25
    $96.25
  • Photo - Primary Photo - Primary

    Cognito 01-24 Chevy Silv/Sierra 2500/3500 HD / Ford F250/350 SD 4WD Carrier Bearing Spacer 2-3 Inch

    Cognito
    $96.25 - $96.25
    $96.25
    $96.25 - $96.25
    $96.25

    Cognito Part # - 199-90188Cognito 01-24 Chevy Silv/Sierra 2500/3500 HD / Ford F250/350 SD 4WD Carrier Bearing Spacer 2-3 InchThis Part Fits: Year ...

    View full details
    $96.25 - $96.25
    $96.25
    $96.25 - $96.25
    $96.25
  • Photo - Primary Photo - Primary

    Cognito 01-13 Chevy/GMC Silverado/Sierra 2500/3500 HD 2WD/4WD Alloy Series Tie Rod Kit

    Cognito
    $399.95 - $399.95
    $399.95
    $399.95 - $399.95
    $399.95

    Cognito Part # - 110-90283The Cognito Alloy Series Tie Rod kit is a Heavy-Duty stock replacement upgrade where the inner joint incorporates an over...

    View full details
    $399.95 - $399.95
    $399.95
    $399.95 - $399.95
    $399.95
  • Photo - Primary Photo - Primary

    Cognito 01-13 Chevy/GMC Silverado/Sierra 2500/3500 HD 2WD/4WD Extreme Duty Tie Rod Center Link Kit

    Cognito
    $749.95 - $749.95
    $749.95
    $749.95 - $749.95
    $749.95

    Cognito Part # - 110-90285New Alloy Steel Extreme Duty Center Link And Tie Rods Direct Bolt In Complete Replacement For Stock Center Link And Tie R...

    View full details
    $749.95 - $749.95
    $749.95
    $749.95 - $749.95
    $749.95
  • Photo - Primary Photo - Primary

    Cognito 01-19 Chevy/GMC Silverado/Sierra 2500/3500 HD 2WD/4WD Heavy-Duty Front Sway Bar End Link Kit

    Cognito
    $112.95 - $112.95
    $112.95
    $112.95 - $112.95
    $112.95

    Cognito Part # - 110-90252These end links are also a little longer than OE recommended lengths to allow clearance for our Larger Diameter tie-rod u...

    View full details
    $112.95 - $112.95
    $112.95
    $112.95 - $112.95
    $112.95
  • Photo - Primary Photo - Primary

    Cognito 01-19 Chevy/GMC Silverado/Sierra 2500/3500 HD 2WD/4WD Front Sway Bar End Link Kit

    Cognito
    $117.95 - $117.95
    $117.95
    $117.95 - $117.95
    $117.95

    Cognito Part # - 110-90255These end links are also a little longer than recommended lengths to allow clearance for our Larger Diameter tie-rod upgr...

    View full details
    $117.95 - $117.95
    $117.95
    $117.95 - $117.95
    $117.95
  • Photo - Primary Photo - Primary

    Cognito 01-19 Chevy/GMC Silverado/Sierra 2500/3500 HD 2WD/4WD Front Sway Bar End Link Kit

    Cognito
    $114.95 - $114.95
    $114.95
    $114.95 - $114.95
    $114.95

    Cognito Part # - 110-90253These end links are also a little longer than recommended lengths to allow clearance for our Larger Diameter tie-rod upgr...

    View full details
    $114.95 - $114.95
    $114.95
    $114.95 - $114.95
    $114.95
  • 2001-2005 Sierra/Silverado 2500HD/3500HD Allison Firepunk F3 Transmission | 1000HP Rated. 2001-2005 Sierra/Silverado 2500HD/3500HD Allison Firepunk F3 Transmission | 1000HP Rated.

    2001-2005 Sierra/Silverado 2500HD/3500HD Allison Firepunk F3 Transmission | 1000HP Rated

    Firepunk
    $9,995.00 - $10,795.00
    $9,995.00
    $9,995.00 - $10,795.00
    $9,995.00

    2001-2005 Firepunk Proven A1000 Allison Transmission Features: Great For Highly Modified Trucks Up To 1000HP 2-Year Unlimited Mileage, 100% Workma...

    View full details
    $9,995.00 - $10,795.00
    $9,995.00
    $9,995.00 - $10,795.00
    $9,995.00
    Select Options
  • Firepunk 2001-2005 Allison 5 Speed Master Rebuild Kit. Firepunk 2001-2005 Allison 5 Speed Master Rebuild Kit.

    Firepunk 2001-2005 Allison 5 Speed Master Rebuild Kit

    Firepunk
    $1,900.00 - $1,900.00
    $1,900.00
    $1,900.00 - $1,900.00
    $1,900.00

    Our 01-05 Allison master rebuild kit includes all the parts you need to rebuild your owntransmission. These are the main components we use in all o...

    View full details
    $1,900.00 - $1,900.00
    $1,900.00
    $1,900.00 - $1,900.00
    $1,900.00
  • Save 3% Save %

    Industrial Injection 01-16 Chevrolet Duramax 6.6L 130lb Valve Spring Kit

    Industrial Injection
    $900.95
    $900.95 - $900.95
    $900.95
    $873.92
    $873.92 - $873.92
    $873.92

    Industrial Injection Part # - 44B801Industrial Injection 01-16 Chevrolet Duramax 6.6L 130lb Valve Spring Kit

    $900.95
    $900.95 - $900.95
    $900.95
    $873.92
    $873.92 - $873.92
    $873.92
    Save 3% Save %
  • Save 3% Save %

    Industrial Injection 04.5-10 Chevrolet Duramax LLY/LBZ/LMM GT3788 XR Series 61mm Turbo Upgrade

    Industrial Injection
    $2,166.95
    $2,166.95 - $2,166.95
    $2,166.95
    $2,101.94
    $2,101.94 - $2,101.94
    $2,101.94

    Industrial Injection Part # - 848212-0001-XRIndustrial Injection 04.5-10 Chevrolet Duramax LLY/LBZ/LMM GT3788 XR Series 61mm Turbo Upgrade

    $2,166.95
    $2,166.95 - $2,166.95
    $2,166.95
    $2,101.94
    $2,101.94 - $2,101.94
    $2,101.94
    Save 3% Save %
  • Save 3% Save %

    Industrial Injection 04.5-10 Chevrolet Duramax 6.6L XR2 Series Turbocharger 68mm/67mm

    Industrial Injection
    $3,001.95
    $3,001.95 - $3,001.95
    $3,001.95
    $2,911.89
    $2,911.89 - $2,911.89
    $2,911.89

    Industrial Injection Part # - 773540-0001-XR2Industrial Injection 04.5-10 Chevrolet Duramax 6.6L XR2 Series Turbocharger 68mm/67mm

    $3,001.95
    $3,001.95 - $3,001.95
    $3,001.95
    $2,911.89
    $2,911.89 - $2,911.89
    $2,911.89
    Save 3% Save %
  • Save 3% Save %

    Industrial Injection 04.5-10 Chevrolet Duramax 6.6L (LLY/LBZ/LMM) GT3788 XR Series Turbo - 64mm

    Industrial Injection
    $2,320.95
    $2,320.95 - $2,320.95
    $2,320.95
    $2,251.32
    $2,251.32 - $2,251.32
    $2,251.32

    Industrial Injection Part # - 848212-0001-XR1Industrial Injection 04.5-10 Chevrolet Duramax 6.6L (LLY/LBZ/LMM) GT3788 XR Series Turbo - 64mm

    $2,320.95
    $2,320.95 - $2,320.95
    $2,320.95
    $2,251.32
    $2,251.32 - $2,251.32
    $2,251.32
    Save 3% Save %
  • Save 3% Save %

    Industrial Injection 01-04 Chevrolet Duramax LB7 Ported & Polished Cylinder Heads

    Industrial Injection
    $4,595.95
    $4,595.95 - $4,595.95
    $4,595.95
    $4,458.07
    $4,458.07 - $4,458.07
    $4,458.07

    Industrial Injection Part # - PDM-LB7RHIndustrial Injection 01-04 Chevrolet Duramax LB7 Ported & Polished Cylinder HeadsThis Part Fits: Year M...

    View full details
    $4,595.95
    $4,595.95 - $4,595.95
    $4,595.95
    $4,458.07
    $4,458.07 - $4,458.07
    $4,458.07
    Save 3% Save %
  • Save 3% Save %

    Industrial Injection 04.5-05 Chevrolet Duramax LLY Ported & Polished Cylinder Heads

    Industrial Injection
    $3,995.95
    $3,995.95 - $3,995.95
    $3,995.95
    $3,876.07
    $3,876.07 - $3,876.07
    $3,876.07

    Industrial Injection Part # - PDM-LLYRHIndustrial Injection 04.5-05 Chevrolet Duramax LLY Ported & Polished Cylinder HeadsThis Part Fits: Year...

    View full details
    $3,995.95
    $3,995.95 - $3,995.95
    $3,995.95
    $3,876.07
    $3,876.07 - $3,876.07
    $3,876.07
    Save 3% Save %

  • Powerhouse Diesel 01-16 GM 6.6L Duramax Short Block

    Powerhouse Diesel
    $8,550.00 - $8,550.00
    $8,550.00
    $8,550.00 - $8,550.00
    $8,550.00

    We own the machines that build this engine. Every operation happens under our roof — no outsourced machine shop, no third-party assembler, no waiti...

    View full details
    $8,550.00 - $8,550.00
    $8,550.00
    $8,550.00 - $8,550.00
    $8,550.00
    Select Options
  • responsive-image responsive-image

    Kryptonite Stage 3 Leveling Kit with Eibach Shocks for 2001–2010 Chevy/GMC HD Trucks

    Kryptonite
    $1,278.69 - $1,278.69
    $1,278.69
    $1,278.69 - $1,278.69
    $1,278.69

    Kryptonite Part #- KR10STAGE3EIB Fits: 2001-2007 Chevy Silverado / GMC Sierra 1500HD  2001-2010 Chevy Silverado / GMC Sierra 2500HD 2001-2010 Chev...

    View full details
    $1,278.69 - $1,278.69
    $1,278.69
    $1,278.69 - $1,278.69
    $1,278.69
  • Photo - Primary Photo - Primary Save 3% Save %

    South Bend Clutch 01-09/2005 Chevy 6.6L Duramax LLY-LB7 Street Dual Disc Clutch Kit

    South Bend Clutch
    $1,435.72
    $1,435.72 - $1,435.72
    $1,435.72
    $1,392.00
    $1,392.00 - $1,392.00
    $1,392.00

    South Bend Clutch Model SDDMAX-DFYSouth Bend Clutch 01-09/2005 Chevy 6.6L Duramax LLY-LB7 Street Dual Disc Clutch KitThis Part Fits: Year Make Mod...

    View full details
    $1,435.72
    $1,435.72 - $1,435.72
    $1,435.72
    $1,392.00
    $1,392.00 - $1,392.00
    $1,392.00
    Save 3% Save %
  • Logo Image Logo Image

    BD Diesel 01-16 Chevrolet/GMC 2500HD/3500HD 6.6L Duramax Passenger Side Exhaust Manifold

    BD Diesel
    $249.63 - $249.63
    $249.63
    $285.95
    $285.95 - $285.95
    $285.95

    BD Diesel Model 1041461Experience performance and durability with the enhanced Duramax exhaust manifolds, specifically designed for the 2001-2016 6...

    View full details
    $249.63 - $249.63
    $249.63
    $285.95
    $285.95 - $285.95
    $285.95
  • responsive-image responsive-image

    Fleece Performance 01-04 LB7 Injection Lines (Complete Set of 8)

    Fleece Performance
    $0.00 - $0.00
    $0.00
    $379.05
    $379.05 - $379.05
    $379.05

    Fleece Performance Model FPE-346112001-2004 LB7 Injection Lines complete set of 8- Over time LB7 Injection lines corrode and break, they are a lead...

    View full details
    $0.00 - $0.00
    $0.00
    $379.05
    $379.05 - $379.05
    $379.05

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