LLY Duramax | 2004.5–2005
Shop parts for 2004.5–2005 GM trucks equipped with the 6.6L LLY Duramax. Browse injectors, fuel system components, turbo and intake upgrades, cooling system parts, engine components, transmission upgrades, maintenance items, and performance parts selected for LLY applications. Always verify your exact year, model, and product fitment before ordering.
Industrial Injection Dual CP3 Kit without Pump - 2004.5-2005 GM Duramax LLY
DDP Individual Stock Reman Injector - 2004.5-2005 GM Duramax LLY
Industrial Injection New Modified CP3 42% - 2004.5-2005 GM Duramax LLY
Merchant Automotive Fuel Pressure Regulator Kit - 2004.5-2005 GM Duramax LLY
Merchant Automotive LLY High Idle Kit - 2004.5-2005 GM Duramax
Merchant Automotive Deluxe Glow Plug Replacement Kit - 2004.5-2005 GM Duramax LLY
Merchant Automotive Fuel Pressure Regulator - 2004.5-2005 GM Duramax LLY
Alliant Reman Common Rail Injector - 2004.5-2005 GM Duramax LLY
BD Diesel Screamer Turbo - 2004.5-2005 GM Duramax LLY
Merchant Automotive Turbo Install Gasket Kit - 2004.5-2005 GM Duramax LLY
Merchant Automotive Fuel Pressure Regulator Install Gasket Kit - 2004.5-2005 LLY
Merchant Automotive Injector Harness Pigtail - 2004.5-2005 GM Duramax LLY
Merchant Automotive MAximum Work Allison 1000 Transmission - 2004.5-2005 LLY 4WD
Merchant Automotive MAximum Pro Allison 1000 Transmission - 2004.5-2005 LLY 4WD
BD Diesel Stock Performance Plus Injector Set - 2004.5-2005 GM Duramax LLY
Merchant Automotive Master Engine Gasket Kit - 2004.5-2005 GM Duramax LLY
BD Diesel Remanufactured CP3 Pump - 2004.5-2005 GM Duramax LLY
GB Fuel Filter Base & Hand Primer Seal Kit - 2001-2010 GM Duramax
Dorman Fuel Primer Seal Kit - 2001-2010 GM Duramax
Fleece Oil Pressure Sensor Pigtail - 2003-2010 GM Duramax
MAHLE Timing Cover Seal - 2001-2016 GM 6.6L Duramax
Merchant Automotive Transfer Case Rear Output Seal - 261XHD/263XHD - 2001-2007 GM Duramax
Merchant Automotive Engine Seal Driver Kit + Front/Rear Main Seals - 2001-2016 GM Duramax
Merchant Automotive Oil Cooler Gasket Kit - 2001-2010 GM Duramax
Shopping LLY Duramax | 2004.5–2005
Hilltop Diesel Performance organizes parts around real truck fitment so you can move from platform to the component you need without digging through an unrelated catalog. For Duramax applications, start with your exact year and engine, then verify configuration-specific notes on the product page before ordering.
Common upgrade and service paths include fuel delivery, injectors, turbochargers, intake and charge-air parts, exhaust, cooling, transmission components, filtration, sensors, gaskets, hardware and supporting installation parts.