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LLY Duramax Parts

Parts for the LLY Duramax (2004.5 to 2005).

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    Wehrli 99-23 GM Billet Coolant Heater Core Firewall Fitting

    Wehrli
    $0.00 - $0.00
    $0.00
    $40.74
    $40.74 - $40.74
    $40.74

    Wehrli Model 100155 *ALLOW 5-7 DAY LEAD TIME FOR SHIPMENT!Wehrli 99-23 GM Billet Coolant Heater Core Firewall Fitting The factory plastic GM Coolan...

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    $0.00 - $0.00
    $0.00
    $40.74
    $40.74 - $40.74
    $40.74
  • S&S Diesel Motorsport Duramax 10mm CP3 (1,325 mm3 /rev displacement) New. S&S Diesel Motorsport Duramax 12mm CP3 High Speed (1,590 mm3 /rev displacement) -New.

    S&S Diesel Motorsport Duramax 12mm CP3 High Speed (1,590 mm3 /rev displacement) -New

    S&S
    $2,600.00 - $2,600.00
    $2,600.00
    $2,600.00 - $2,600.00
    $2,600.00

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

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    $2,600.00 - $2,600.00
    $2,600.00
    $2,600.00 - $2,600.00
    $2,600.00
  • S&S Diesel Motorsport Duramax SuperSport CP3 (higher output >3500rpm) - New. S&S Diesel Motorsport Duramax SuperSport CP3 (higher output >3500rpm) - New.

    S&S Diesel Motorsport Duramax SuperSport CP3 (higher output >3500rpm) - New

    S&S
    $1,130.00 - $1,130.00
    $1,130.00
    $1,130.00 - $1,130.00
    $1,130.00

    S&S Model CP3-DMX-SSS&S Diesel Motorsport Duramax SuperSport CP3 (higher output >3500rpm) S&S Duramax CP3 pumps are built from brand...

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    $1,130.00 - $1,130.00
    $1,130.00
    $1,130.00 - $1,130.00
    $1,130.00
  • S&S Diesel Motorsport LLY Duramax (2004.5-2005 )TorqueMaster Injectors Set - Reman or New. S&S Diesel Motorsport LLY Duramax (2004.5-2005 )TorqueMaster Injectors Set - Reman or New.

    S&S Diesel Motorsport LLY Duramax (2004.5-2005 )TorqueMaster Injectors Set - Reman or New

    S&S
    $2,610.00 - $3,070.00
    $2,610.00
    $2,610.00 - $3,070.00
    $2,610.00

    S&S Model LLY-10SAC-R-SET (Reman) or LLY-10SAC-SET (New)LLY TorqueMaster Injector -Set S&S Upgrades Proprietary nozzle honing process fo...

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    $2,610.00 - $3,070.00
    $2,610.00
    $2,610.00 - $3,070.00
    $2,610.00
    Select Options
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    XDP XTRA Cool Water Pump (With Housing) XD666

    XDP
    $157.95 - $157.95
    $157.95
    $157.95 - $157.95
    $157.95

    XDP Model XD6662001-2005 GM 6.6L Duramax LB7/LLY | 2003-2005 GM Kodiak/Topkick C4500/C5500 6.6L DuramaxThe XDP X-TRA Cool Water Pump (With Housing)...

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    $157.95 - $157.95
    $157.95
    $157.95 - $157.95
    $157.95
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    XDP Billet Tow & Race Series Flex Plate 2001-2016 GM 6.6L Duramax LB7/LLY/LBZ/LMM/LML Allison A1000

    XDP
    $271.95 - $271.95
    $271.95
    $271.95 - $271.95
    $271.95

    XDP Model XD651Upgrade your truck with a XDP Billet Tow & Race Series Flex Plate XD651. If your truck is used for racing, sled pulling, or hot ...

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    $271.95 - $271.95
    $271.95
    $271.95 - $271.95
    $271.95
  • responsive-image responsive-image Save 3% Save %

    Dodge Rail Plug For 13-18 6.7L Cummins Industrial Injection

    Industrial Injection
    $39.95
    $39.95 - $39.95
    $39.95
    $38.75
    $38.75 - $38.75
    $38.75

    Industrial Injection Model: 631601Made by Industrial Injection to replace your factory faulty pressure relief valve which causes a lack of fuel pre...

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    $39.95
    $39.95 - $39.95
    $39.95
    $38.75
    $38.75 - $38.75
    $38.75
    Save 3% Save %
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    Fleece Performance Duramax Remote Turbo Oil Feed Line Kit for 01-16 Duramax/w 1/4 NPT Oil Inlet

    Fleece Performance
    $0.00 - $0.00
    $0.00
    $99.99
    $99.99 - $99.99
    $99.99

    Fleece Performance Model FPE-DTFL-S3S4-0116Problem: The factory turbo oil feed used on 2001-2016 Duramax's is supplied off of the #4 cam journal be...

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    $0.00 - $0.00
    $0.00
    $99.99
    $99.99 - $99.99
    $99.99
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    Mishimoto 03-05 Chevrolet / GMC 6.6L Duramax (LB7/LLY) Transmission Cooler

    Mishimoto
    $549.00
    $549.00 - $549.00
    $549.00
    $498.95
    $498.95 - $498.95
    $498.95

    There's no greater enemy for a transmission than heat. Whether your 2003-2005 Chevy/GMC 6.6L Duramax is a dedicated tow vehicle, hardworking fleet ...

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    $549.00
    $549.00 - $549.00
    $549.00
    $498.95
    $498.95 - $498.95
    $498.95
    Save 9% Save %
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    Pusher Max HD Charge Tube Package for 2004.5-05 Duramax LLY Trucks

    Pusher Intakes
    $559.99 - $559.99
    $559.99
    $559.99 - $559.99
    $559.99

    Pusher Intakes Model PGD0405KT This product is not emissions compliant. Off-road use only. The Pusher Max HD Charge Tube is engineered to provide ...

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    $559.99 - $559.99
    $559.99
    $559.99 - $559.99
    $559.99
    Select Options
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    Pusher Max HD Charge Tube for 2004.5-05 Duramax LLY Trucks

    Pusher Intakes
    $349.99 - $349.99
    $349.99
    $349.99 - $349.99
    $349.99

    Pusher Intakes Model PGD0405BT This product is not emissions compliant. Off-road use only. The Pusher Max Passenger-Side Charge Tube is the ultimat...

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    $349.99 - $349.99
    $349.99
    $349.99 - $349.99
    $349.99
    Select Options
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    Body Mount Kit For 2001-2005 Chevy / GMC 1500, 2500, 3500 Extended / Crew Cab

    S&B
    $499.00 - $499.00
    $499.00
    $499.00 - $499.00
    $499.00

    S&B Model 81-2001These bushings offer great vibration isolation and will not crack or breakdown like the OEM foam or rubber bushings. Also come...

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    $499.00 - $499.00
    $499.00
    $499.00 - $499.00
    $499.00
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    Kryptonite Alignment Cam Pins 8-pc Kit For Chevy/GMC Trucks & SUVs

    Kryptonite
    $18.99 - $18.99
    $18.99
    $18.99 - $18.99
    $18.99

    Part# KR86325 Fits; 2001–2025 Chevrolet & GMC 1500HD / 2500 / 2500HD / 3500 / 3500HD (2WD & 4WD), 2001–2013 Chevy & GMC 2500 2WD/4WD SU...

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    $18.99 - $18.99
    $18.99
    $18.99 - $18.99
    $18.99
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    Kryptonite Press-in Upper Ball Joint For Stock Control Arm For 2001–2010 Chevy/GMC HD Trucks & Hummer H2

    Kryptonite
    $56.99 - $56.99
    $56.99
    $56.99 - $56.99
    $56.99

    Fits:2001–2010 Chevy/GMC 1500HD / 2500HD / 3500HD & Hummer H2 with stock control arms only Features: Heavy-Duty Construction – Engineered for ...

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    $56.99 - $56.99
    $56.99
    $56.99 - $56.99
    $56.99
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    Kryptonite Upper And Lower Ball Joint Package Deal For Stock Control Arms For 2001–2010 Chevy/GMC HD Trucks

    Kryptonite
    $189.99 - $189.99
    $189.99
    $189.99 - $189.99
    $189.99

    Fits: 2001–2010 Chevy/GMC 2500HD, 3500HD, 2002–2009 Hummer H2 (8 Lug Trucks Only) Important Fitment Info: This package is designed as a direct repl...

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    $189.99 - $189.99
    $189.99
    $189.99 - $189.99
    $189.99
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    Kryptonite Idler Support Frame Gusset For 2001–2010 Chevy/GMC 1500HD/2500HD/3500 Trucks

    Kryptonite
    $85.49 - $85.49
    $85.49
    $85.49 - $85.49
    $85.49

    Fits; 2001–2010 Chevy/GMC 2500HD / 3500HD Part# KRGUSSET10 Features: 1/4" Plate Steel Made in the USA DescriptionEngineered exclusively for the e...

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    $85.49 - $85.49
    $85.49
    $85.49 - $85.49
    $85.49
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    Smeding Diesel S475 T4 Turbocharger

    Smeding
    $1,150.00 - $1,780.00
    $1,150.00
    $1,150.00 - $1,780.00
    $1,150.00

    S475 t4 Turbocharger

    $1,150.00 - $1,780.00
    $1,150.00
    $1,150.00 - $1,780.00
    $1,150.00
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    Smeding Diesel S369 SXE Turbocharger

    Smeding
    $975.00 - $1,265.00
    $975.00
    $975.00 - $1,265.00
    $975.00

    Smeding Diesel S369 SXE Turbocharger

    $975.00 - $1,265.00
    $975.00
    $975.00 - $1,265.00
    $975.00
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    XDP X-tra Cool Direct-fit Replacement Radiator XD295

    XDP
    $355.95 - $355.95
    $355.95
    $355.95 - $355.95
    $355.95

    XDP Model XD295The XDP X-TRA Cool Direct-Fit Replacement Radiator XD295 is an upgrade for the old leaking radiator in your 2001-2005 GM 6.6L Durama...

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    $355.95 - $355.95
    $355.95
    $355.95 - $355.95
    $355.95
  • Premium Quad-Row Multi-Function LED Tailgate Light Strip. Premium Quad-Row Multi-Function LED Tailgate Light Strip.

    Premium Quad-Row Multi-Function LED Tailgate Light Strip

    Rough Country
    $49.95 - $54.95
    $49.95
    $49.95 - $54.95
    $49.95

    Enhance the rear of your truck with Rough Country’s Quad-Row Multifunction LED Tailgate Light Strip. This easy-to-install LED strip is both pr...

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    $49.95 - $54.95
    $49.95
    $49.95 - $54.95
    $49.95
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    Wehrli WCFab Coolant Tank Billet Cap - Black Anodized

    Wehrli
    $0.00 - $0.00
    $0.00
    $38.80
    $38.80 - $38.80
    $38.80

    Wehrli Model WCF100543Wehrli WCFab Coolant Tank Billet Cap - Black Anodized 18-20PSI Replacement Coolant Tank Cap, Black Anodized. Used on WCFab Fa...

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    $0.00 - $0.00
    $0.00
    $38.80
    $38.80 - $38.80
    $38.80
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    FASS 01-10 GM 2500/3500 Duramax 100gph Titanium Series Plus Fuel Air Separation System

    FASS Fuel Systems
    $777.89
    $777.89 - $777.89
    $777.89
    $739.00
    $739.00 - $739.00
    $739.00

    FASS Fuel Systems Model TSPC10100GThe Titanium Signature Series Plus is the next evolution of our popular Titanium Signature Series Fuel System. Th...

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    $777.89
    $777.89 - $777.89
    $777.89
    $739.00
    $739.00 - $739.00
    $739.00
    Save 5% Save %
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    Kryptonite Lifetime Warranty Wheel Bearing 2001-2007 (classic)

    Kryptonite
    $332.49 - $332.49
    $332.49
    $332.49 - $332.49
    $332.49

    Kryptonite Model KR310FITMENT: 2001-2007 Chevrolet Silverado 2500 HD 2001-2007 GMC Sierra 2500 HD 2001-2007 Chevrolet Silverado 3500 SRW & DRW...

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    $332.49 - $332.49
    $332.49
    $332.49 - $332.49
    $332.49
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    Kryptonite Upper Control Arm Bushing Kit (Poly Only) For 2001–2010 Chevy/GMC Trucks/SUVS

    Kryptonite
    $33.24 - $33.24
    $33.24
    $33.24 - $33.24
    $33.24

    Kryptonite Model KRBUCA10-UOFits; 2001–2010 Chevrolet & GMC 1500HD / 2500 / 2500HD / 3500 / 3500HD (2WD & 4WD), 2001–2013 Chevrolet & G...

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    $33.24 - $33.24
    $33.24
    $33.24 - $33.24
    $33.24

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