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LLY Duramax Parts

Parts for the LLY Duramax (2004.5 to 2005).

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  • S&S Diesel Motorsport Low Pressure Injector Return Line Assembly-LH Side LLY/LBZ/LMM. S&S Diesel Motorsport Low Pressure Injector Return Line Assembly-LH Side LLY/LBZ/LMM.

    S&S Diesel Motorsport Low Pressure Injector Return Line Assembly-LH Side LLY/LBZ/LMM

    S&S
    $50.00 - $50.00
    $50.00
    $50.00 - $50.00
    $50.00

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

    $50.00 - $50.00
    $50.00
    $50.00 - $50.00
    $50.00
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    DDP Common Rail High Pressure Diesel Injection System Cleaner

    DDP
    $0.00 - $0.00
    $0.00
    $47.50
    $47.50 - $47.50
    $47.50

    DDP Model DDPCRCLEANHeavy duty, one-time use injection system cleaner. Cleans the entire fuel system! This product removes contamination, resin and...

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    $0.00 - $0.00
    $0.00
    $47.50
    $47.50 - $47.50
    $47.50
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    Wehrli 2001+ GM Duramax LB7/LLY/LBZ/LMM/LML/L5P Billet Oil Fill Cap - Clear Anodized

    Wehrli
    $0.00 - $0.00
    $0.00
    $51.41
    $51.41 - $51.41
    $51.41

    Wehrli Model WCF100442Wehrli 2001+ GM Duramax LB7/LLY/LBZ/LMM/LML/L5P Billet Oil Fill Cap - Clear Anodized Clean up the engine bay of your 2001-202...

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    $0.00 - $0.00
    $0.00
    $51.41
    $51.41 - $51.41
    $51.41
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    Wehrli 04.5-2010 Duramax LLY/LBZ/LMM Crankcase Vent (PCV) Fitting Kit - Billet Black Anodized

    Wehrli
    $0.00 - $0.00
    $0.00
    $46.08
    $46.08 - $46.08
    $46.08

    Wehrli Model WCF100189Wehrli 04.5-2010 Duramax LLY/LBZ/LMM Crankcase Vent (PCV) Fitting Kit - Billet Black Anodized Kit includes two CNC machined...

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    $0.00 - $0.00
    $0.00
    $46.08
    $46.08 - $46.08
    $46.08
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    Wehrli 04.5-10 Chevrolet 6.6L LLY/LBZ/LMM Duramax 3in Down Pipe

    Wehrli
    $0.00 - $0.00
    $0.00
    $194.00
    $194.00 - $194.00
    $194.00

    Wehrli Model WCF100120Wehrli 04.5-10 Chevrolet 6.6L LLY/LBZ/LMM Duramax 3in Down Pipe Replace the restrictive crushed factory turbo down pipe / exh...

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    $0.00 - $0.00
    $0.00
    $194.00
    $194.00 - $194.00
    $194.00
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    Wehrli 01-05 Chevrolet 6.6L LB7/LLY Duramax Upper Coolant Pipe

    Wehrli
    $0.00 - $0.00
    $0.00
    $144.53
    $144.53 - $144.53
    $144.53

    Wehrli Model WCF100860 Aluminum Upper Coolant Pipe for LB7/LLY Duramax replaces the OEM rubber upper coolant hose and comes powder coated color of ...

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    $0.00 - $0.00
    $0.00
    $144.53
    $144.53 - $144.53
    $144.53
    Select Options
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    Fleece Performance 01-16 GM Duramax 6.6L CP3 Adapter Kit w/O-Rings

    Fleece Performance
    $0.00 - $0.00
    $0.00
    $66.49
    $66.49 - $66.49
    $66.49

    Fleece Performance Model FPE-DMAX-CP3-ADPTReplacement CP3 adapter machined from billet aluminum for the 2001-2016 GM Duramax. Includes new O-rings ...

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    $0.00 - $0.00
    $0.00
    $66.49
    $66.49 - $66.49
    $66.49
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    South Bend Clutch Chevy Duramax 6.6L Replacemnt Hydraulic Assembly

    South Bend Clutch
    $204.27
    $204.27 - $204.27
    $204.27
    $203.10
    $203.10 - $203.10
    $203.10

    South Bend Clutch Model HYDX-MAXSouth Bend Clutch Chevy Duramax 6.6L Replacemnt Hydraulic AssemblyThis Part Fits: Year Make Model Submodel 2001-...

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    $204.27
    $204.27 - $204.27
    $204.27
    $203.10
    $203.10 - $203.10
    $203.10
    Save 1% Save %
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    Mishimoto 01-21 Silverado Sierra Express Savana Duramax 6.6L Low Temp Thermostat Set

    Mishimoto
    $110.00
    $110.00 - $110.00
    $110.00
    $99.95
    $99.95 - $99.95
    $99.95

    Mishimoto 01-21 Silverado Sierra Express Savana Duramax 6.6L Low Temp Thermostat Set Fits 2001-2021 Chevrolet/GMC 6.6L Duramax (see fitment char...

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    $110.00
    $110.00 - $110.00
    $110.00
    $99.95
    $99.95 - $99.95
    $99.95
    Save 9% Save %
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    GM FCA For 2004.5-2005 LLY 6.6L Duramax Industrial Injection

    Industrial Injection
    $190.15 - $190.15
    $190.15
    $190.15 - $190.15
    $190.15

    Industrial Injection Model: 0928400653-IISReplacement FCA for a LL7 CP3. Industrial Injection is the leading distributor, supplier and remanufactur...

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    $190.15 - $190.15
    $190.15
    $190.15 - $190.15
    $190.15
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    FASS 01-10 GM 2500/3500 Duramax 165gph Titanium Series Fuel Air Separation System TS C10 165G

    FASS Fuel Systems
    $793.68
    $793.68 - $793.68
    $793.68
    $754.00
    $754.00 - $754.00
    $754.00

    Fass Fuel Systems Model: TSC10165GFASS Fuel Systems Diesel System 2001-2010 GM Duramax 6.6L Titanium Signature Series 165GPH (TSC10165G) Part No: T...

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    $793.68
    $793.68 - $793.68
    $793.68
    $754.00
    $754.00 - $754.00
    $754.00
    Save 5% Save %
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    Schaeffer's 0204SAT All-Trans Supreme ATF

    Schaeffer's
    $235.68 - $384.60
    $235.68
    $235.68 - $384.60
    $235.68

    0204SAT All-Trans Supreme® is formulated with a special blend of synthetic base oils, a highly shear, stable viscosity improver, and a multi-functi...

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    $235.68 - $384.60
    $235.68
    $235.68 - $384.60
    $235.68
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    Kryptonite Remote Reservoir Mount Kit For 2001–2010 Chevy/GMC HD Trucks & 2002–2009 Hummer H2

    Kryptonite
    $170.99 - $170.99
    $170.99
    $170.99 - $170.99
    $170.99

    Fits: 2001–2010 Chevy 2500HD/3500HD 2001–2010 GMC 2500HD/3500HD 2002–2009 Hummer H2 Important Fitment Details: Fits front shock towers. Sold as a p...

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    $170.99 - $170.99
    $170.99
    $170.99 - $170.99
    $170.99
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    Kryptonite Inner Tie Rod Tool For Chevy/GMC Trucks

    Kryptonite
    $28.49 - $28.49
    $28.49
    $28.49 - $28.49
    $28.49

    Fits; Any Kryptonite Death Grip Style Inner Tie Rod for GM Trucks Important Fitment Info: This tool is specifically designed to install or remove K...

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    $28.49 - $28.49
    $28.49
    $28.49 - $28.49
    $28.49

  • S400 4.62 S400 down pipe with clamp

    Smeding
    $199.00 - $199.00
    $199.00
    $199.00 - $199.00
    $199.00

    S400 4.62 S400 down pipe with clamp

    $199.00 - $199.00
    $199.00
    $199.00 - $199.00
    $199.00
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    KC Billet Unison Ring - 6.0 POWERSTROKE, LLY, LBZ

    Kc Turbo
    $159.00 - $159.00
    $159.00
    $159.00 - $159.00
    $159.00

    100% Drop In Ready Machined From High Quality Billet Stainless Steel Prevents Sticking Vanes Corrosion Resistant Lengthens Life of VGT Solenoid D...

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    $159.00 - $159.00
    $159.00
    $159.00 - $159.00
    $159.00
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    S&B Filters 75-5102 Cold Air Intake Kit (Cleanable Filter)

    S&B
    $379.00 - $379.00
    $379.00
    $379.00 - $379.00
    $379.00

    S&B Model 75-5102Outflow the factory air intake system in your 2004.5-2005 GM 6.6L Duramax LLY with the S&B Filters 75-5102 Cold Air Intake...

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    $379.00 - $379.00
    $379.00
    $379.00 - $379.00
    $379.00
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    XDP Duramax Cat Adapter With 1R-0750 Filter, Bleeder Screw & Spacer XD171

    XDP
    $109.95 - $109.95
    $109.95
    $109.95 - $109.95
    $109.95

    XDP Model XD171The XDP Duramax CAT Adapter with 1R-0750 Filter, Bleeder Screw & Spacer XD171 is an easy way to upgrade the fuel filter on your ...

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    $109.95 - $109.95
    $109.95
    $109.95 - $109.95
    $109.95
  • Pusher Hollow Point Air Filter. Pusher Hollow Point Air Filter.

    Pusher Hollow Point Air Filter

    Pusher Intakes
    $78.50 - $78.50
    $78.50
    $78.50 - $78.50
    $78.50

    Pusher Part # XXCALWe have designed, refined and tested our filter's geometry over several years - and across a broad range of conditions and vehic...

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    $78.50 - $78.50
    $78.50
    $78.50 - $78.50
    $78.50
    Select Options
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    Fleece Performance 06-10 GM Duramax 6.6L LBZ/LMM Allison Transmission Cooler Lines

    Fleece Performance
    $0.00 - $0.00
    $0.00
    $289.99
    $289.99 - $289.99
    $289.99

    Fleece Performance Model FPE-TL-LBZ-LMMReplace your leaking transmission lines with our heavy duty, high flow, flexible transmission lines. Our kit...

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    $0.00 - $0.00
    $0.00
    $289.99
    $289.99 - $289.99
    $289.99
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    Fleece Performance 06-10 GM 2500/3500 Duramax 6.6L Fuel Pressure Regulator Wiring Harness

    Fleece Performance
    $0.00 - $0.00
    $0.00
    $69.99
    $69.99 - $69.99
    $69.99

    Fleece Performance Model FPE-HAR-DMAX-FPROur Fuel Pressure Regulator (FPR) harness for the 2001-2010 6.6L Duramax is a direct replacement for GM Pa...

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    $0.00 - $0.00
    $0.00
    $69.99
    $69.99 - $69.99
    $69.99
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    XDP Mass Air Flow (MAF) Sensor 2001-2007 GM 6.6L Duramax LB7/LLY/LBZ XD1024

    XDP
    $83.95 - $83.95
    $83.95
    $83.95 - $83.95
    $83.95

    XDP Model XD1024The XDP Mass Air Flow (MAF) Sensor XD1024 is an OE-style, direct-fit replacement the factory MAF sensor on your Chevy or GMC 6.6L D...

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    $83.95 - $83.95
    $83.95
    $83.95 - $83.95
    $83.95
  • User 1 Photo - Primary Save 9% Save %

    Mishimoto Steel Spiked Lug Nuts M14 x 1.5 32pc Set Black

    Mishimoto
    $115.00
    $115.00 - $115.00
    $115.00
    $104.95
    $104.95 - $104.95
    $104.95

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

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    $115.00
    $115.00 - $115.00
    $115.00
    $104.95
    $104.95 - $104.95
    $104.95
    Save 9% Save %
  • XDP Harmonic Balancer Bolt XD628. XDP Harmonic Balancer Bolt XD628.

    XDP Harmonic Balancer Bolt XD628

    XDP
    $24.95 - $24.95
    $24.95
    $24.95 - $24.95
    $24.95

    XDP Model XD628

    $24.95 - $24.95
    $24.95
    $24.95 - $24.95
    $24.95

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.

Powerhouse Diesel