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

  • Fleece Performance 04.5-10 GM Duramax SureFlo Performance Sending Unit

    Fleece Performance
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $379.00
    $379.00 - $379.00
    Current price $379.00

    Fleece Performance Model FPE-SF-GM-0410Problem: If you are running an aftermarket pump that is mounted external of the fuel tank, you will need to ...

    View full details
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $379.00
    $379.00 - $379.00
    Current price $379.00
  • Fleece Performance 04.5-10 Chevy Duramax (LLY/LBZ/LMM) 63mm STREET VNT Cheetah Turbo w/ HX40 Outlet

    Fleece Performance
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $2,599.00
    $2,599.00 - $2,599.00
    Current price $2,599.00

    Fleece Performance Model FPE-VNT63-STREETThe Duramax VNT Cheetah Turbocharger is a drop-in replacement turbocharger for 04.5-10 Duramax diesels. It...

    View full details
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $2,599.00
    $2,599.00 - $2,599.00
    Current price $2,599.00
  • Fleece Performance 01-19 GM 2500/3500 34V Duramax Billet Rocker Arm Bridges

    Fleece Performance
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $512.54
    $512.54 - $512.54
    Current price $512.54

    Fleece Performance Model FPE-BRAB-D1Fleece Performance billet rocker arm bridges for the GM Duramax. These bridges offer a massive 2.5-time strengt...

    View full details
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $512.54
    $512.54 - $512.54
    Current price $512.54
  • Fleece Performance 04.5-07 GM Duramax 6.6L LLY/LBZ All Lights On Refill (Pack of 10)

    Fleece Performance
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $224.60
    $224.60 - $224.60
    Current price $224.60

    Fleece Performance 2004.5 to 2007 GM Duramax 6.6L LLY/LBZ All Lights On Refill (Pack of 10). Sold and shipped by Powerhouse Diesel, a diesel repair...

    View full details
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $224.60
    $224.60 - $224.60
    Current price $224.60
  • Fleece Performance 01-16 GM Duramax 2500/3500 Fuel Primer Bulb Sealing Kit

    Fleece Performance
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $49.99
    $49.99 - $49.99
    Current price $49.99

    Fleece Performance Model FPE-GM-FFPD-0116If you're running an aftermarket positive displacement lift pump like our PowerFlo on your Duramax our fue...

    View full details
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $49.99
    $49.99 - $49.99
    Current price $49.99
  • Fleece Performance 01-16 GM 2500/3500 Duramax Billet Oil Cap Cover - Red

    Fleece Performance
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $39.99
    $39.99 - $39.99
    Current price $39.99

    Fleece Performance Model FPE-DMAX-OC-REDDress up your engine bay with our billet aluminum oil cap for the Chevy Duramax! Includes o-ring and cam-lo...

    View full details
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $39.99
    $39.99 - $39.99
    Current price $39.99
  • Fleece Performance 01-16 GM 2500/3500 Duramax Billet Oil Cap Cover - Blue

    Fleece Performance
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $39.99
    $39.99 - $39.99
    Current price $39.99

    Fleece Performance Model FPE-DMAX-OC-BLUDress up your engine bay with our billet aluminum oil cap for the Chevy Duramax! Includes o-ring and cam-lo...

    View full details
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $39.99
    $39.99 - $39.99
    Current price $39.99
  • Fleece Performance 01-13 GM Duramax 6.6L AlliLocker - Allison Torque Converter Controller

    Fleece Performance
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $179.00
    $179.00 - $179.00
    Current price $179.00

    Fleece Performance Model FPE-ALILKRControl your torque converter from the palm of your hand with the AlliLocker from Fleece Performance Engineering...

    View full details
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $179.00
    $179.00 - $179.00
    Current price $179.00
  • Fleece Performance 01-13 GM Duramax 6.6L 1.5in T4 Pedestal Spacer

    Fleece Performance
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $119.74
    $119.74 - $119.74
    Current price $119.74

    Fleece Performance Model FPE-T4PED-SPACER1.5This black 1.5in T4 Pedestal Spacer is designed for use with T4 Turbos installed on Duramax engines whe...

    View full details
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $119.74
    $119.74 - $119.74
    Current price $119.74
  • Fleece Performance 01-10 GM Duramax 6.6L LB7 / LLY / LBZ / LMM Front TufShafts

    Fleece Performance
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $1,099.00
    $1,099.00 - $1,099.00
    Current price $1,099.00

    Fleece Performance Model FPE-TUFSHAFTSTufShafts are a direct replacement upgrade shafts for any 2001-2010 GM 2500-3500 with a 9.25 inch AAM front a...

    View full details
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $1,099.00
    $1,099.00 - $1,099.00
    Current price $1,099.00
  • Fleece Performance 01-07 GM Duramax/11-16 GM 2500/3500 Duramax Oil Cooler Adapter Kit

    Fleece Performance
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $99.00
    $99.00 - $99.00
    Current price $99.00

    Fleece Performance Model FPE-DMAX-OCADPTProblem: The original equipment oil cooler adapter relies on a metal gasket on the oil cooler that over tim...

    View full details
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $99.00
    $99.00 - $99.00
    Current price $99.00
  • Fleece Performance 01-07 GM 2500/3500 Duramax Vane Position Sensor Pigtail (LLY)

    Fleece Performance
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $27.99
    $27.99 - $27.99
    Current price $27.99

    Fleece Performance Model FPE-HAR-DMAX-MAP-0107Replacement connector with 6 inch pigtail for use on the 6.6L Duramax engine including MAP, BARO, cam...

    View full details
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $27.99
    $27.99 - $27.99
    Current price $27.99
  • Fleece Performance 01-05 GM Duramax 6.6L LB7/LLY Allison Transmission Cooler Lines

    Fleece Performance
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $289.99
    $289.99 - $289.99
    Current price $289.99

    Fleece Performance Model FPE-TL-LB7-LLY Replace your leaking transmission lines with our heavy duty, high flow, flexible transmission lines. Our ki...

    View full details
    Original price $0.00 - Original price $0.00
    Original price $0.00
    $289.99
    $289.99 - $289.99
    Current price $289.99
  • Exergy 04.5-10 Chevrolet Duramax 6.6L LLY/LBZ/LMM Injector Leak Rail Retaining Clip - Set of 8

    Exergy
    Original price $64.00 - Original price $64.00
    Original price
    $64.00
    $64.00 - $64.00
    Current price $64.00

    Exergy 2004.5 to 2010 Chevrolet Duramax 6.6L LLY/LBZ/LMM Injector Leak Rail Retaining Clip, Set of 8. Sold and shipped by Powerhouse Diesel, a dies...

    View full details
    Original price $64.00 - Original price $64.00
    Original price
    $64.00
    $64.00 - $64.00
    Current price $64.00
  • Exergy 04.5-10 Chevrolet Duramax 6.6L LLY/LBZ/LMM Seal Kit (O-Ring & Copper Gasket) - Set of 8

    Exergy
    Original price $60.00 - Original price $60.00
    Original price
    $60.00
    $60.00 - $60.00
    Current price $60.00

    Exergy 2004.5 to 2010 Chevrolet Duramax 6.6L LLY/LBZ/LMM Seal Kit (O Ring & Copper Gasket), Set of 8. Sold and shipped by Powerhouse Diesel, a ...

    View full details
    Original price $60.00 - Original price $60.00
    Original price
    $60.00
    $60.00 - $60.00
    Current price $60.00
  • ARP Duramax 6.6L LBZ/LLY/LML/LMM Hex Valve Cover Bolt Kit - Polished Stainless Steel

    ARP
    Original price $186.06 - Original price $186.06
    Original price
    $186.06
    $186.06 - $186.06
    Current price $186.06

    ARP Duramax 6.6L LBZ/LLY/LML/LMM Hex Valve Cover Bolt Kit, Polished Stainless Steel. Sold and shipped by Powerhouse Diesel, a diesel repair and per...

    View full details
    Original price $186.06 - Original price $186.06
    Original price
    $186.06
    $186.06 - $186.06
    Current price $186.06
  • ARP Duramax 6.6L LBZ/LLY/LML/LMM 12pt Valve Cover Bolt Kit | Part 400-7533

    ARP
    Original price $208.69 - Original price $208.69
    Original price
    $208.69
    $208.69 - $208.69
    Current price $208.69

    ARP Duramax 6.6L LBZ/LLY/LML/LMM 12pt Valve Cover Bolt Kit. Sold and shipped by Powerhouse Diesel, a diesel repair and performance shop in Knoxvill...

    View full details
    Original price $208.69 - Original price $208.69
    Original price
    $208.69
    $208.69 - $208.69
    Current price $208.69
  • ARP Duramax 6.6L LBZ/LLY/LML/LMM 12pt Valve Cover Bolt Kit | Part 100-7533

    ARP
    Original price $148.16 - Original price $148.16
    Original price
    $148.16
    $148.16 - $148.16
    Current price $148.16

    ARP Duramax 6.6L LBZ/LLY/LML/LMM 12pt Valve Cover Bolt Kit. Sold and shipped by Powerhouse Diesel, a diesel repair and performance shop in Knoxvill...

    View full details
    Original price $148.16 - Original price $148.16
    Original price
    $148.16
    $148.16 - $148.16
    Current price $148.16
  • Yukon Gear 1480 U-Bolt Kit

    Yukon Gear & Axle
    Original price $55.89 - Original price $55.89
    Original price
    $55.89
    $55.89 - $55.89
    Current price $55.89

    Yukon Gear and Axle manufactures a complete line of general replacement and performance series of pinion yokes for many street, racing, and heavy-d...

    View full details
    Original price $55.89 - Original price $55.89
    Original price
    $55.89
    $55.89 - $55.89
    Current price $55.89
  • Yukon Gear Pilot Bearing For 10.5in 14 Bolt Truck / 2.050in O.D

    Yukon Gear & Axle
    Original price $58.54 - Original price $58.54
    Original price
    $58.54
    $58.54 - $58.54
    Current price $58.54

    Yukon Gear & Axle manufactures a full line of top quality small parts to complete any job including ring gear bolts, crush sleeves, pinion nuts...

    View full details
    Original price $58.54 - Original price $58.54
    Original price
    $58.54
    $58.54 - $58.54
    Current price $58.54
  • Yukon Gear Axle Bearing & Seal Kit For GM 9.5in

    Yukon Gear & Axle
    Original price $115.89 - Original price $115.89
    Original price
    $115.89
    $115.89 - $115.89
    Current price $115.89

    Yukon axle bearing and seal kits are specially designed for each application and use high-quality bearings and seals.Installation InstructionsInsta...

    View full details
    Original price $115.89 - Original price $115.89
    Original price
    $115.89
    $115.89 - $115.89
    Current price $115.89
  • Yukon Gear Axle Bearing & Seal Kit For GM 11.5in aam Rear

    Yukon Gear & Axle
    Original price $339.15 - Original price $339.15
    Original price
    $339.15
    $339.15 - $339.15
    Current price $339.15

    Yukon axle bearing and seal kits are specially designed for each application and use high-quality bearings and seals.Installation InstructionsInsta...

    View full details
    Original price $339.15 - Original price $339.15
    Original price
    $339.15
    $339.15 - $339.15
    Current price $339.15
  • Yukon Gear Axle Bearing & Seal Kit For 10.5in GM 14 Bolt Truck

    Yukon Gear & Axle
    Original price $189.75 - Original price $189.75
    Original price
    $189.75
    $189.75 - $189.75
    Current price $189.75

    Yukon axle bearing and seal kits are specially designed for each application and use high-quality bearings and seals.Installation InstructionsInsta...

    View full details
    Original price $189.75 - Original price $189.75
    Original price
    $189.75
    $189.75 - $189.75
    Current price $189.75
  • Yukon Gear Axle Bearing & Seal Kit For GM 9.25in IFS Front

    Yukon Gear & Axle
    Original price $231.38 - Original price $231.38
    Original price
    $231.38
    $231.38 - $231.38
    Current price $231.38

    Yukon axle bearing and seal kits are specially designed for each application and use high-quality bearings and seals.Installation InstructionsInsta...

    View full details
    Original price $231.38 - Original price $231.38
    Original price
    $231.38
    $231.38 - $231.38
    Current price $231.38

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.