Skip to content
Free Shipping on most orders over $150.00. Buy now, pay later with ShopPay                    
Free Shipping on most orders over $150.00. Buy now, pay later with ShopPay                    

LLY Duramax Parts

Parts for the LLY Duramax (2004.5 to 2005).

Filters

  • Photo - Primary Photo - Primary

    ATS Diesel 2001-04 ATS LCT-1000 5-Speed Stage 6 Transmission Rebuild kit

    ATS Diesel
    $3,564.99 - $3,564.99
    $3,564.99
    $3,564.99 - $3,564.99
    $3,564.99

    Fits: 2001 to 2004 Chevrolet Silverado 2500 HD; 2001 to 2004 Chevrolet Silverado 3500; 2001 to 2004 GMC Sierra 2500 HD; 2001 to 2004 GMC Sierra 350...

    View full details
    $3,564.99 - $3,564.99
    $3,564.99
    $3,564.99 - $3,564.99
    $3,564.99
    Select Options
  • Photo - Primary Photo - Primary

    ATS Diesel 2004.5-2005 LCT-1000 5-Speed Stage 6 Transmission Rebuild kit

    ATS Diesel
    $3,564.99 - $3,564.99
    $3,564.99
    $3,564.99 - $3,564.99
    $3,564.99

    Fits: 8 vehicle models, including 2001 to 2004 Chevrolet Silverado 2500 HD; 2001 to 2004 Chevrolet Silverado 3500; 2001 to 2004 GMC Sierra 2500 HD....

    View full details
    $3,564.99 - $3,564.99
    $3,564.99
    $3,564.99 - $3,564.99
    $3,564.99
    Select Options
  • Photo - Primary Photo - Primary

    ATS Diesel 2001-04 LCT-1000 5-Speed Stage 7 Transmission Rebuild kit

    ATS Diesel
    $4,654.99 - $4,654.99
    $4,654.99
    $4,654.99 - $4,654.99
    $4,654.99

    Fits: 2001 to 2004 Chevrolet Silverado 2500 HD; 2001 to 2004 Chevrolet Silverado 3500; 2001 to 2004 GMC Sierra 2500 HD; 2001 to 2004 GMC Sierra 350...

    View full details
    $4,654.99 - $4,654.99
    $4,654.99
    $4,654.99 - $4,654.99
    $4,654.99
    Select Options
  • Photo - Primary Photo - Primary

    ATS Diesel 04.5-05 LCT-1000 5-Speed Stage 7 Transmission Rebuild kit

    ATS Diesel
    $4,654.99 - $4,654.99
    $4,654.99
    $4,654.99 - $4,654.99
    $4,654.99

    Fits: 8 vehicle models, including 2001 to 2004 Chevrolet Silverado 2500 HD; 2001 to 2004 Chevrolet Silverado 3500; 2001 to 2004 GMC Sierra 2500 HD....

    View full details
    $4,654.99 - $4,654.99
    $4,654.99
    $4,654.99 - $4,654.99
    $4,654.99
    Select Options
  • Photo - Primary Photo - Primary

    ATS Diesel 01+ GM / 03+ Dodge 14-Bolt 11.5in American Axle ATS Protector Rear Differential Cover

    ATS Diesel
    $289.99 - $289.99
    $289.99
    $289.99 - $289.99
    $289.99

    Fits: 15 vehicle models, including 2001 to 2005, 2007 to 2014 Chevrolet Silverado 2500 HD; 2001 to 2005, 2007 to 2014 GMC Sierra 2500 HD; 1999 to 2...

    View full details
    $289.99 - $289.99
    $289.99
    $289.99 - $289.99
    $289.99
  • Photo - Primary Photo - Primary

    ATS 2006-2007 6.6L LLY / LBZ / LMM Duramax Stage 1 Allison LCT1000 Transmission Package 4WD w/ PTO

    ATS Diesel
    $5,794.99 - $5,794.99
    $5,794.99
    $5,794.99 - $5,794.99
    $5,794.99

    ATS 2006 to 2007 6.6L LLY / LBZ / LMM Duramax Stage 1 Allison LCT1000 Transmission Package 4WD with PTO. Sold and shipped by Powerhouse Diesel, a d...

    View full details
    $5,794.99 - $5,794.99
    $5,794.99
    $5,794.99 - $5,794.99
    $5,794.99
    Select Options
  • Photo - Primary Photo - Primary

    ATS Diesel 06-07 6.6L LLY/LBZ/LMM Duramax Stage 3 Allison LCT100 Transmission Package

    ATS Diesel
    $7,809.99 - $7,809.99
    $7,809.99
    $7,809.99 - $7,809.99
    $7,809.99

    ATS Diesel 2006 to 2007 6.6L LLY/LBZ/LMM Duramax Stage 3 Allison LCT100 Transmission Package. Sold and shipped by Powerhouse Diesel, a diesel repai...

    View full details
    $7,809.99 - $7,809.99
    $7,809.99
    $7,809.99 - $7,809.99
    $7,809.99
    Select Options
  • Photo - Primary Photo - Primary

    ATS Diesel 06-07 6.6L LLY/LBZ/LMM Duramax Stage 4 Allison LCT100 Transmission Package

    ATS Diesel
    $8,579.99 - $8,579.99
    $8,579.99
    $8,579.99 - $8,579.99
    $8,579.99

    ATS Diesel 2006 to 2007 6.6L LLY/LBZ/LMM Duramax Stage 4 Allison LCT100 Transmission Package. Sold and shipped by Powerhouse Diesel, a diesel repai...

    View full details
    $8,579.99 - $8,579.99
    $8,579.99
    $8,579.99 - $8,579.99
    $8,579.99
    Select Options
  • Photo - Primary Photo - Primary

    ATS Diesel 04-11 Chevy Duramax Aurora 4000 VFR Turbocharger Kit

    ATS Diesel
    $2,694.99 - $2,694.99
    $2,694.99
    $2,694.99 - $2,694.99
    $2,694.99

    ATS Diesel 2004 to 2011 Chevy Duramax Aurora 4000 VFR Turbocharger Kit. Sold and shipped by Powerhouse Diesel, a diesel repair and performance shop...

    View full details
    $2,694.99 - $2,694.99
    $2,694.99
    $2,694.99 - $2,694.99
    $2,694.99
  • Photo - Primary Photo - Primary

    ATS Diesel 2001 to Early 2010 GM Duramax Five Star Torque Converter - Viskus Clutch Mid Stall

    ATS Diesel
    $1,509.99 - $1,509.99
    $1,509.99
    $1,509.99 - $1,509.99
    $1,509.99

    Fits: 10 vehicle models, including 2001 to 2004, 2007 to 2010 Chevrolet Silverado 2500 HD; 2001 to 2004, 2007 to 2010 GMC Sierra 2500 HD; 2006 to 2...

    View full details
    $1,509.99 - $1,509.99
    $1,509.99
    $1,509.99 - $1,509.99
    $1,509.99
    Select Options
  • responsive-image responsive-image

    S&S Diesel Motorsport Reverse Rotation Ordnance 650 CP3

    S&S
    $4,100.00 - $5,100.00
    $4,100.00
    $4,100.00 - $5,100.00
    $4,100.00

    S&S Model RR-CP3-ORD650-GPD or RR-CP3-ORD650-SP Race application only made to orderS&S Diesel Motorsport Reverse Rotation Ordnance 650 CP3 ...

    View full details
    $4,100.00 - $5,100.00
    $4,100.00
    $4,100.00 - $5,100.00
    $4,100.00
  • Logo Image Logo Image

    WeatherTech Universal Seat Protector Grey 56in W x 20in D x 18in H Bench

    WeatherTech
    $199.95 - $199.95
    $199.95
    $199.95 - $199.95
    $199.95

    WeatherTech Model 8ASP-BN5GWeatherTech Seat Protectors are the perfect accessory for those vehicle owners needing an extra step of protection for t...

    View full details
    $199.95 - $199.95
    $199.95
    $199.95 - $199.95
    $199.95
  • responsive-image responsive-image Save 5% Save %

    FASS 01-16 GM 2500/3500 Duramax 290gph/8-10psi Titanium Plus Fuel Air Separation System

    FASS Fuel Systems
    $946.32
    $946.32 - $946.32
    $946.32
    $899.00
    $899.00 - $899.00
    $899.00

    FASS Fuel Systems Model TSPC10290GThe Titanium Signature Series Plus is the next evolution of our popular Titanium Signature Series Fuel System. Th...

    View full details
    $946.32
    $946.32 - $946.32
    $946.32
    $899.00
    $899.00 - $899.00
    $899.00
    Save 5% Save %
  • responsive-image responsive-image Save 5% Save %

    FASS 01-16 GM 2500/3500 Duramax 250gph/8-10psi Titanium Plus Fuel Air Separation System

    FASS Fuel Systems
    $893.68
    $893.68 - $893.68
    $893.68
    $849.00
    $849.00 - $849.00
    $849.00

    FASS Fuel Systems Model TSPC10250GThe Titanium Signature Series Plus is the next evolution of our popular Titanium Signature Series Fuel System. Th...

    View full details
    $893.68
    $893.68 - $893.68
    $893.68
    $849.00
    $849.00 - $849.00
    $849.00
    Save 5% Save %
  • responsive-image responsive-image Save 5% Save %

    FASS 01-10 GM 2500/3500 Duramax 165gph Titanium Series Plus Fuel Air Separation System

    FASS Fuel Systems
    $820.00
    $820.00 - $820.00
    $820.00
    $779.00
    $779.00 - $779.00
    $779.00

    FASS Fuel Systems Model TSPC10165GThe Titanium Signature Series Plus is the next evolution of our popular Titanium Signature Series Fuel System. Th...

    View full details
    $820.00
    $820.00 - $820.00
    $820.00
    $779.00
    $779.00 - $779.00
    $779.00
    Save 5% Save %
  • responsive-image responsive-image Save 5% Save %

    FASS 01-16 Chevy Duramax 290gph No Drop Titanium Plus Fuel System

    FASS Fuel Systems
    $1,051.58
    $1,051.58 - $1,051.58
    $1,051.58
    $999.00
    $999.00 - $999.00
    $999.00

    FASS Fuel Systems Model NDTSPC10290GInstalling a Titanium Signature Series Plus Fuel System has never been easier, or more affordable. Designed to ...

    View full details
    $1,051.58
    $1,051.58 - $1,051.58
    $1,051.58
    $999.00
    $999.00 - $999.00
    $999.00
    Save 5% Save %
  • responsive-image responsive-image Save 5% Save %

    FASS 01-16 Chevy Duramax 250gph No Drop Titanium Plus Fuel System

    FASS Fuel Systems
    $998.95
    $998.95 - $998.95
    $998.95
    $949.00
    $949.00 - $949.00
    $949.00

    FASS Fuel Systems Model NDTSPC10250GInstalling a Titanium Signature Series Plus Fuel System has never been easier, or more affordable. Designed to ...

    View full details
    $998.95
    $998.95 - $998.95
    $998.95
    $949.00
    $949.00 - $949.00
    $949.00
    Save 5% Save %
  • responsive-image responsive-image Save 5% Save %

    FASS 01-10 Chevy Duramax 165gph No Drop Titanium Plus Fuel System

    FASS Fuel Systems
    $956.84
    $956.84 - $956.84
    $956.84
    $909.00
    $909.00 - $909.00
    $909.00

    FASS Fuel Systems Model NDTSPC10165GInstalling a Titanium Signature Series Plus Fuel System has never been easier, or more affordable. Designed to ...

    View full details
    $956.84
    $956.84 - $956.84
    $956.84
    $909.00
    $909.00 - $909.00
    $909.00
    Save 5% Save %
  • responsive-image responsive-image Save 5% Save %

    FASS 01-10 Chevy Duramax 100gph No Drop Titanium Plus Fuel System

    FASS Fuel Systems
    $914.74
    $914.74 - $914.74
    $914.74
    $869.00
    $869.00 - $869.00
    $869.00

    FASS Fuel Systems Model NDTSPC10100GInstalling a Titanium Signature Series Plus Fuel System has never been easier, or more affordable. Designed to ...

    View full details
    $914.74
    $914.74 - $914.74
    $914.74
    $869.00
    $869.00 - $869.00
    $869.00
    Save 5% Save %
  • responsive-image responsive-image Save 5% Save %

    FASS 01-16 Chevy Duramax 250gph No Drop Titanium Fuel System

    FASS Fuel Systems
    $972.63
    $972.63 - $972.63
    $972.63
    $924.00
    $924.00 - $924.00
    $924.00

    FASS Fuel Systems Model NDTSC10250GFASS No Drop Series Diesel Fuel System for 2001-2016 GM/Chevy Duramax 6.6L (900-1,200hp) Includes TSC10250G Fuel...

    View full details
    $972.63
    $972.63 - $972.63
    $972.63
    $924.00
    $924.00 - $924.00
    $924.00
    Save 5% Save %
  • responsive-image responsive-image Save 5% Save %

    FASS 01-16 Chevy Duramax 290gph No Drop Titanium Fuel System

    FASS Fuel Systems
    $1,025.26
    $1,025.26 - $1,025.26
    $1,025.26
    $974.00
    $974.00 - $974.00
    $974.00

    FASS Fuel Systems Model NDTSC10290GFASS No Drop Series Diesel Fuel System for 2001-2016 GM/Chevy Duramax 6.6L (1,200-1,500hp) Includes TSC10290G Fu...

    View full details
    $1,025.26
    $1,025.26 - $1,025.26
    $1,025.26
    $974.00
    $974.00 - $974.00
    $974.00
    Save 5% Save %
  • responsive-image responsive-image Save 5% Save %

    FASS 01-10 Chevy Duramax 165gph No Drop Titanium Fuel System

    FASS Fuel Systems
    $930.53
    $930.53 - $930.53
    $930.53
    $884.00
    $884.00 - $884.00
    $884.00

    FASS Fuel Systems Model NDTSC10165GFASS No Drop Series Diesel Fuel System for 2001-2010 GM/Chevy Duramax 6.6L (600-1,000hp) Includes TSC10165G Fuel...

    View full details
    $930.53
    $930.53 - $930.53
    $930.53
    $884.00
    $884.00 - $884.00
    $884.00
    Save 5% Save %
  • responsive-image responsive-image Save 5% Save %

    FASS 01-10 Chevy Duramax 100gph No Drop Titanium Fuel System

    FASS Fuel Systems
    $888.42
    $888.42 - $888.42
    $888.42
    $844.00
    $844.00 - $844.00
    $844.00

    FASS Fuel Systems Model NDTSC10100GFASS No Drop Series Diesel Fuel System for 2001-2010 GM/Chevy Duramax 6.6L (Stock- 600hp) Includes TSC10100G Fue...

    View full details
    $888.42
    $888.42 - $888.42
    $888.42
    $844.00
    $844.00 - $844.00
    $844.00
    Save 5% Save %
  • responsive-image responsive-image Save 5% Save %

    FASS 01-16 GM 2500/3500 Duramax 165gph Signature Series Adjustable Fuel Pump FAS C09 165G

    FASS Fuel Systems
    $677.89
    $677.89 - $677.89
    $677.89
    $644.00
    $644.00 - $644.00
    $644.00

    FASS Fuel Systems Model FASC09165GFASS Fuel Systems Adjustable Diesel Fuel System 165GPH GM Duramax 6.6L 2001-2016 (FASC09165G) Part No: FASC09165G...

    View full details
    $677.89
    $677.89 - $677.89
    $677.89
    $644.00
    $644.00 - $644.00
    $644.00
    Save 5% Save %

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.