Collection: 2004.5-2005 6.6L LLY Duramax Engine Parts & Accessories
2004.5-2005 6.6L LLY Duramax Engine Parts & Accessories
Maximize the performance and longevity of your 2004.5-2005 6.6L LLY Duramax with high-quality engine components designed for durability and enhanced performance. Whether you’re upgrading for increased horsepower, improved fuel efficiency, or better overall engine reliability, our selection of...
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PPE 2001-2019 GM 6.6L Duramax Hand Wrench for PPE Premium High-Efficiency Engine Oil Filters
Regular price $17.99 USDSale price $17.99 USD Regular priceUnit price / per$19.99 USDSale -
PPE 2002-2010 Duramax w/ PPE Dual Fueler, or 2002-2005 Stock Dual Alternator (105A) No Vacuum Pump - High-Performance Heavy-Duty Serpentine Belt
Regular price $44.99 USDSale price $44.99 USD Regular priceUnit price / per$49.99 USDSale -
PPE 2002-2005 GM 6.6L Duramax Single Alternator (130A) w/ Vacuum Pump, 2011-2014, 2017-2019 Duramax Single Alternator (125A) - High-Performance Heavy-Duty Serpentine Belt
Regular price $49.49 USDSale price $49.49 USD Regular priceUnit price / per$54.99 USDSale -
PPE 2002-2005 GM 6.6L Duramax Single Alternator (105A) No Vacuum Pump - High-Performance Heavy-Duty Serpentine Belt
Regular price $53.99 USDSale price $53.99 USD Regular priceUnit price / per$59.99 USDSale -
PPE 2001-2010 GM 6.6L Duramax Idler Pulley 3.0" OD OEM Size
Regular price $47.69 USDSale price $47.69 USD Regular priceUnit price / per$39.99 USD -
PPE 2002-2010 GM 6.6L Duramax Belt Tensioner
Regular price $161.99 USDSale price $161.99 USD Regular priceUnit price / per$179.99 USDSale -
PPE 2001-2016 GM 6.6L Duramax 7Y-Spoke Style Billet Aluminum Pulley Wheel
Regular price $179.99 USDSale price $179.99 USD Regular priceUnit price / per$199.99 USDSale -
PPE GM 6.6L Duramax Dual Fueler Idler Pulley 6.6L (4" Diameter)
Regular price $31.49 USDSale price $31.49 USD Regular priceUnit price / per$34.99 USDSale -
PPE O-ring for CP3 bracket to block
Regular price $13.49 USDSale price $13.49 USD Regular priceUnit price / per$14.99 USDSale -
PPE 2001-2016 GM 6.6L Duramax Valve and Spring Kit
Regular price $809.99 USDSale price $809.99 USD Regular priceUnit price / per$899.99 USDSale -
PPE 2001-2016 GM 6.6L Duramax Valve Springs, Retainers, and Keepers Complete Kit
Regular price $539.99 USDSale price $539.99 USD Regular priceUnit price / per$599.99 USDSale -
PPE 2001-2010 GM 6.6L Duramax Engine Mount Kit 50 Hardness
Regular price $269.99 USDSale price $269.99 USD Regular priceUnit price / per$299.99 USDSale -
PPE 2001-2010 GM 6.6L Duramax PPE High-Capacity Cast Aluminum Engine Oil Pan
Regular price $260.99 USDSale price $260.99 USD Regular priceUnit price / per$289.99 USDSale -
PPE 2001-2010 GM 6.6L Duramax PPE High-Capacity Cast Aluminum Engine Oil Pan
Regular price $278.99 USDSale price $278.99 USD Regular priceUnit price / per$309.99 USDSale -
PPE 114052001 14mm Billet Hardened Stainless Steel Neodymium Magnetic Drain Plug
Regular price $17.99 USDSale price $17.99 USD Regular priceUnit price / per$19.99 USDSale -
PPE 2001 - 2016 6.6L GM Duramax Billet Aluminum Engine Oil Filler Cap
Regular price $31.49 USDSale price $31.49 USD Regular priceUnit price / per$34.99 USDSale -
PPE 2001-2019 GM 6.6L Duramax Engine Oil Filter - MicroPure Extreme-Performance - Featuring TorqSTOP Technology
Regular price $35.99 USDSale price $35.99 USD Regular priceUnit price / per -
MAHLE Right Bank Piston for 2001-2005 GM 6.6L LB7 Duramax
Regular price $456.46 USDSale price $456.46 USD Regular priceUnit price / per -
MAHLE 224-3451 Left Bank Piston for 2001-2005 GM 6.6L LB7 Duramax
Regular price $456.46 USDSale price $456.46 USD Regular priceUnit price / per -
MAHLE 41909 Complete Piston Ring Set (Standard) for Chevy/GMC 6.6L Duramax Engines 2001-2010
Regular price $230.47 USDSale price $230.47 USD Regular priceUnit price / per -
Vibrant Performance Gen3 Catch Can Assembly
Regular price $323.99 USDSale price $323.99 USD Regular priceUnit price / per -
PPE 2001-2016 GM 6.6L Duramax Straight Valve Springs, Retainers, and Keepers Kit
Regular price $539.99 USDSale price $539.99 USD Regular priceUnit price / per -
PPE 2001-2016 GM 6.6L Duramax Valve and Spring Kit
Regular price $809.99 USDSale price $809.99 USD Regular priceUnit price / per -
PPE 2001-2016 GM 6.6L Duramax BoostLine Connecting Rods
Regular price $1,695.99 USDSale price $1,695.99 USD Regular priceUnit price / per -
PPE 2001-2016 GM 6.6L Duramax Head Stud Kit, PPE-288 High Yield
Regular price $1,709.99 USDSale price $1,709.99 USD Regular priceUnit price / per -
PPE 2001-2016 GM 6.6L Duramax PPE High-Performance Manifold Standard Port Gasket (1 PC)
Regular price $11.69 USDSale price $11.69 USD Regular priceUnit price / per -
FASS DFD4000 Duramax Factory Fuel Filter Delete Kit 2001-2016
Regular price $83.74 USDSale price $83.74 USD Regular priceUnit price / per$88.15 USDSale
2004.5-2005 6.6L LLY Duramax Engine Parts & Accessories
Maximize the performance and longevity of your 2004.5-2005 6.6L LLY Duramax with high-quality engine components designed for durability and enhanced performance. Whether you’re upgrading for increased horsepower, improved fuel efficiency, or better overall engine reliability, our selection of engine parts has everything you need. From intake manifolds to camshafts and gaskets, each part is engineered to deliver exceptional performance and reliability. Shop 2004.5-2005 6.6L LLY Duramax Engine Parts & Accessories
High-Performance Engine Parts for 6.6L LLY Duramax
Our engine components for the 2004.5-2005 6.6L LLY Duramax are built to withstand high power outputs and demanding driving conditions. From replacement parts to performance upgrades, our products are designed to optimize engine efficiency, improve combustion, and increase power. These parts are essential for anyone looking to maintain or enhance the performance of their Duramax engine.
Why Choose Our Engine Components?
Upgrading your engine components is a great way to unlock your truck’s full potential. Whether you're adding power, improving fuel economy, or boosting overall performance, our parts are engineered for longevity and optimal performance. Designed for Duramax owners who demand the best, these components provide exceptional reliability and performance.
Key Features:
- Enhanced Power & Efficiency: Improves horsepower, torque, and overall engine efficiency.
- Durability: Built to withstand high temperatures and demanding conditions.
- Improved Performance: Optimizes engine operation for better throttle response and overall driving experience.


