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LLY Duramax Parts

Parts for the LLY Duramax (2004.5 to 2005).

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    WeatherTech Rubber Mats Rear Black for 1999 to 2006 Chevy C K Series Silverado Avalanche and GMC C K Series Sierra

    WeatherTech
    $147.90 - $147.90
    $147.90
    $147.90 - $147.90
    $147.90

    WeatherTech all weather rear floor mats with deep channels that trap water, salt, mud and sand. They won't curl, crack or harden in the cold.Questi...

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    $147.90 - $147.90
    $147.90
    $147.90 - $147.90
    $147.90
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    WeatherTech FloorLiner Front Black for 1999 to 2007 Chevy Silverado GMC Sierra 440031-440622

    WeatherTech
    $242.90 - $242.90
    $242.90
    $242.90 - $242.90
    $242.90

    The WeatherTech FloorLiner DigitalFit accurately and completely lines the interior carpet giving "absolute interior protection". Digital laser meas...

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    $242.90 - $242.90
    $242.90
    $242.90 - $242.90
    $242.90
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    WeatherTech FloorLiner Front Black for 2001 to 2021 Ford F150 and Chevy Silverado 44697-1-4

    WeatherTech
    $242.90 - $242.90
    $242.90
    $242.90 - $242.90
    $242.90

    The WeatherTech FloorLiner DigitalFit accurately and completely lines the interior carpet giving "absolute interior protection". Digital laser meas...

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    $242.90 - $242.90
    $242.90
    $242.90 - $242.90
    $242.90
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    DDP 04.5-05 Chevrolet Duramax 6.6L LLY Stock Reman Injector (Single)

    DDP
    $0.00 - $0.00
    $0.00
    $408.50
    $408.50 - $408.50
    $408.50

    DDP Model DDPLLY-STKDuramax 04.5-05 LLY Injector: Remanufactured stock power level injector. Every internal component replaced with new OE componen...

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    $0.00 - $0.00
    $0.00
    $408.50
    $408.50 - $408.50
    $408.50
    Select Options
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    Exergy Rail Fitting for HP Line into PRV Location LLY/LBZ/LMM & Cummins 6.7L

    Exergy
    $77.00 - $77.00
    $77.00
    $77.00 - $77.00
    $77.00

    Exergy Rail Fitting for HP Line into PRV Location LLY/LBZ/LMM & Cummins 6.7L. Sold and shipped by Powerhouse Diesel, a diesel repair and perfor...

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    $77.00 - $77.00
    $77.00
    $77.00 - $77.00
    $77.00
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    Exergy Port to Female M18x1.5 Cummins 6.7 / Duramax LLY/LBZ/LMM

    Exergy
    $116.00 - $116.00
    $116.00
    $116.00 - $116.00
    $116.00

    Exergy Port to Female M18x1.5 Cummins 6.7 / Duramax LLY/LBZ/LMM. Sold and shipped by Powerhouse Diesel, a diesel repair and performance shop in Kno...

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    $116.00 - $116.00
    $116.00
    $116.00 - $116.00
    $116.00
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    Exergy PRV Plug w/O-Ring Cummins 6.7L/LLY/LBZ/LMM (Diagnostic Purposes Only)

    Exergy
    $64.00 - $64.00
    $64.00
    $64.00 - $64.00
    $64.00

    Exergy PRV Plug without Ring Cummins 6.7L/LLY/LBZ/LMM (Diagnostic Purposes Only). Sold and shipped by Powerhouse Diesel, a diesel repair and perfor...

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    $64.00 - $64.00
    $64.00
    $64.00 - $64.00
    $64.00
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    Exergy 04.5-10 Chevrolet Duramax 6.6L LLY/LBZ/LMM Leak Rail Assembly (Passenger Side)

    Exergy
    $61.00 - $61.00
    $61.00
    $61.00 - $61.00
    $61.00

    Exergy 2004.5 to 2010 Chevrolet Duramax 6.6L LLY/LBZ/LMM Leak Rail Assembly (Passenger Side). Sold and shipped by Powerhouse Diesel, a diesel repai...

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    $61.00 - $61.00
    $61.00
    $61.00 - $61.00
    $61.00
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    Exergy 04.5-10 Chevrolet Duramax 6.6L LLY/LBZ/LMM Leak Rail Assembly (Driver Side)

    Exergy
    $61.00 - $61.00
    $61.00
    $61.00 - $61.00
    $61.00

    Exergy 2004.5 to 2010 Chevrolet Duramax 6.6L LLY/LBZ/LMM Leak Rail Assembly (Driver Side). Sold and shipped by Powerhouse Diesel, a diesel repair a...

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    $61.00 - $61.00
    $61.00
    $61.00 - $61.00
    $61.00
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    Exergy 04.5-05 Chevrolet Duramax 6.6L LLY New Stock Replacement Right Hand Fuel Rail

    Exergy
    $250.00 - $250.00
    $250.00
    $250.00 - $250.00
    $250.00

    Exergy 2004.5 to 2005 Chevrolet Duramax 6.6L LLY New Stock Replacement Right Hand Fuel Rail. Sold and shipped by Powerhouse Diesel, a diesel repair...

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    $250.00 - $250.00
    $250.00
    $250.00 - $250.00
    $250.00
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    DDP 04.5-05 Chevrolet Duramax 6.6L LLY Stock Brand New Injector (Single)

    DDP
    $0.00 - $0.00
    $0.00
    $517.75
    $517.75 - $517.75
    $517.75

    DDP Model DDPNLLY-STKDuramax 04.5-05 LLY Injector: Brand New stock power level injector. Comes with all the latest revisions. Sold individually wit...

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    $0.00 - $0.00
    $0.00
    $517.75
    $517.75 - $517.75
    $517.75
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    Exergy 04.5-05 Chevrolet Duramax 6.6L LLY 550 Alpha Stroker CP3 Pump (LBZ Based)

    Exergy
    $3,700.00 - $3,700.00
    $3,700.00
    $3,700.00 - $3,700.00
    $3,700.00

    Exergy Model E04 10210Exergy 04.5-05 Chevrolet Duramax 6.6L LLY 550 Alpha Stroker CP3 Pump (LBZ Based) The first of an industry leading series of p...

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    $3,700.00 - $3,700.00
    $3,700.00
    $3,700.00 - $3,700.00
    $3,700.00
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    Industrial Injection 04.5-10 LLY/LBZ/LMM 6.6L Chevy Replacement Turbocharger

    Industrial Injection
    $1,531.61 - $1,531.61
    $1,531.61
    $1,531.61 - $1,531.61
    $1,531.61

    Industrial Injection Model: 848212-5001S Elevate your truck's performance with the Garrett 6.6L LLY/LBZ/LMM Duramax New Stock Replacement Turbochar...

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    $1,531.61 - $1,531.61
    $1,531.61
    $1,531.61 - $1,531.61
    $1,531.61
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    Wehrli LB7/LLY/LBZ/LMM Duramax Twin/Compound Turbocharger Pedestal

    Wehrli
    $0.00 - $0.00
    $0.00
    $290.03
    $290.03 - $290.03
    $290.03

    Wehrli Model WCF100675Wehrli LB7/LLY/LBZ/LMM Duramax Twin/Compound Turbocharger Pedestal Twin Turbo Pedestal for 2001-10 Duramax. #8 JIC / -8AN tur...

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    $0.00 - $0.00
    $0.00
    $290.03
    $290.03 - $290.03
    $290.03
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    Wehrli LB7/LLY/LBZ/LMM Duramax S400 Twin/Compound Turbo Oil Line Kit

    Wehrli
    $0.00 - $0.00
    $0.00
    $198.85
    $198.85 - $198.85
    $198.85

    Wehrli Model WCF100378Wehrli LB7/LLY/LBZ/LMM Duramax S400 Twin/Compound Turbo Oil Line Kit -Stainless Braided #8 Drain Line 30"-Stainless Braided #...

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    $0.00 - $0.00
    $0.00
    $198.85
    $198.85 - $198.85
    $198.85
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    Wehrli 2001+ GM Duramax LB7/LLY/LBZ/LMM/LML/L5P Billet Oil Fill Cap - Black Anodized

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

    Wehrli Model WCF100443Wehrli 2001+ GM Duramax LB7/LLY/LBZ/LMM/LML/L5P Billet Oil Fill Cap - Black Anodized -CNC Machined Billet Aluminum GM factory...

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    $0.00 - $0.00
    $0.00
    $51.41
    $51.41 - $51.41
    $51.41
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    Wehrli 04.5-10 Duramax LLY/LBZ/LMM Billet Upper Valve Cover Set

    Wehrli
    $0.00 - $0.00
    $0.00
    $363.75
    $363.75 - $363.75
    $363.75

    Wehrli Model WCF100415 WCFab Billet Aluminum Upper Valve Cover sets fit LLY, LBZ, and LMM Duramax and are a great way to clean up your engine's app...

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    $0.00 - $0.00
    $0.00
    $363.75
    $363.75 - $363.75
    $363.75
    Select Options
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    Wehrli 01-10 Chevrolet 6.6L Duramax Valley CP3 Block Off Plate

    Wehrli
    $0.00 - $0.00
    $0.00
    $72.75
    $72.75 - $72.75
    $72.75

    Wehrli Model WCF100024Billet Block Off plate for valley CP3 pump. Black anodized finish with engraved logo.

    $0.00 - $0.00
    $0.00
    $72.75
    $72.75 - $72.75
    $72.75
  • Wehrli 17-24 6.7L Power Stroke Coolant Tank w/ Battery Box. responsive-image

    Wehrli 01-10 Chevrolet 6.6L Duramax Traction Bar Install Kit

    Wehrli
    $0.00 - $0.00
    $0.00
    $969.03
    $969.03 - $969.03
    $969.03

    Wehrli Model WCF100850 ***This kit includes 60" long bars for Regular Cab Long Bed, Extended Cab Short Bed and Crew Cab Short Bed Models*** ***This...

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    $0.00 - $0.00
    $0.00
    $969.03
    $969.03 - $969.03
    $969.03
    Select Options
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    Wehrli 01-10 Chevrolet 6.6L Duramax FASS Fuel System Relocation Bracket (Crew Cab Only)

    Wehrli
    $0.00 - $0.00
    $0.00
    $98.94
    $98.94 - $98.94
    $98.94

    Wehrli Model WCF100265Wehrli 01-10 Chevrolet 6.6L Duramax FASS Fuel System Relocation Bracket (Crew Cab Only) -Mount Bracket-Grade 8 Hardware-Zinc ...

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    $0.00 - $0.00
    $0.00
    $98.94
    $98.94 - $98.94
    $98.94
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    Wehrli 01-07 Chevrolet 6.6L LB7/LLY/LBZ Duramax OEM Placement Coolant Tank Kit

    Wehrli
    $0.00 - $0.00
    $0.00
    $474.33
    $474.33 - $474.33
    $474.33

    Wehrli Model WCF100645 2001-2007 Duramax Fabricated Aluminum Coolant Tank Kit, mounts in OEM coolant tank location. Dress up your engine bay by re...

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    $0.00 - $0.00
    $0.00
    $474.33
    $474.33 - $474.33
    $474.33
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    Wehrli 01-06 Chevrolet 6.6L LB7/LLY/LBZ Duramax Twin Turbo Style Coolant Tank Kit

    Wehrli
    $416.13 - $416.13
    $416.13
    $416.13 - $416.13
    $416.13

    Wehrli Model WCF100642LB7, LLY, LBZ Duramax Fabricated Aluminum Coolant Tank Kit for Twin Turbo Applications mounts on passenger side fender. Does ...

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    $416.13 - $416.13
    $416.13
    $416.13 - $416.13
    $416.13
    Select Options
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    Garrett GT3794VA Turbo Kit - Chevy Duramax 6.6L 2004.5-2009 Stage 1 AVNT

    Garrett
    $3,102.82 - $3,102.82
    $3,102.82
    $3,102.82 - $3,102.82
    $3,102.82

    Garrett GT3794VA Turbo Kit, Chevy Duramax 6.6L 2004.5 to 2009 Stage 1 AVNT. Sold and shipped by Powerhouse Diesel, a diesel repair and performance ...

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    $3,102.82 - $3,102.82
    $3,102.82
    $3,102.82 - $3,102.82
    $3,102.82
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    Fleece Performance GM Silverado/Sierra 2500/3500 6.6L LLY Duramax Vane Position Sensor Pigtail

    Fleece Performance
    $0.00 - $0.00
    $0.00
    $28.99
    $28.99 - $28.99
    $28.99

    Fleece Performance Model FPE-HAR-DMAX-VPS-0405Replacement connector with 6 inch pigtail for use on the 6.6L Duramax turbocharger vane position sens...

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    $0.00 - $0.00
    $0.00
    $28.99
    $28.99 - $28.99
    $28.99

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.