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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Fleece Performance FPE-61-10002-D Freedom Series Duramax Cylinder Head for 2004.5-2005 LLY (Driver Side)
Regular price $1,199.00 USDSale price $1,199.00 USD Regular priceUnit price / per$1,149.00 USD -
Fleece Performance FPE-61-10002-P Freedom Series Duramax Cylinder Head for 2004.5-2005 LLY (Passenger Side)
Regular price $1,199.00 USDSale price $1,199.00 USD Regular priceUnit price / per -
PPE 2004.5-2010 GM 6.6L Duramax Ported Cast Iron Cylinder Head (One) LLY/LBZ/LMM
Regular price $1,709.99 USDSale price $1,709.99 USD Regular priceUnit price / per$1,899.99 USDSale -
PPE 2004.5-2010 GM 6.6L Duramax Cast Iron Cylinder Head (One) LLY/LBZ/LMM
Regular price $1,349.99 USDSale price $1,349.99 USD Regular priceUnit price / per$1,499.99 USDSale -
Gator Fasteners Gator Fasteners Thread Cleaning Chaser
5.0 / 5.0
(2) 2 total reviews
Regular price $19.75 USDSale price $19.75 USD Regular priceUnit price / per$31.49 USDSale -
PPE 2001-2019 GM 6.6L Duramax PPE Engine Oil Filter Socket
Regular price $35.99 USDSale price $35.99 USD Regular priceUnit price / per$39.99 USDSale -
Fleece Performance '-8 to 3/4 Inch-16 Straight Male Black w/ O-Ring FPE-APT-34-08
Regular price $10.99 USDSale price $10.99 USD Regular priceUnit price / per -
Fleece Performance FPE-BRAB-D1 GM Duramax Rocker Bridges
Regular price $512.54 USDSale price $512.54 USD Regular priceUnit price / per -
PPE 2001-2022 GM 6.6L Duramax Oil Galley Feed Line Fitting
Regular price $35.99 USDSale price $35.99 USD Regular priceUnit price / per$39.99 USDSale -
PPE 2001-2011 GM 6.6L Duramax Water Level Sensor Wrench
Regular price $14.39 USDSale price $14.39 USD Regular priceUnit price / per$15.99 USDSale -
PPE 2001-2010 GM 6.6L Duramax Engine Mount Kit 70 Hardness
Regular price $269.99 USDSale price $269.99 USD Regular priceUnit price / per$299.99 USDSale -
PPE 2001-2010 GM 6.6L Duramax Engine Mount Kit 60 Hardness
Regular price $269.99 USDSale price $269.99 USD Regular priceUnit price / per$299.99 USDSale -
PPE 2001-2010 GM 6.6L Duramax Engine Mount Kit 40 Hardness
Regular price $269.99 USDSale price $269.99 USD Regular priceUnit price / per$299.99 USDSale -
PPE 2001-2022 GM 6.6L Duramax Fan Clutch Delete Nut
Regular price $44.99 USDSale price $44.99 USD Regular priceUnit price / per$49.99 USDSale -
PPE Harmonic Balancer Bolt 12 point GM 6.6L (2001-2019)
Regular price $26.99 USDSale price $26.99 USD Regular priceUnit price / per$29.99 USDSale -
PPE 2001-2005 GM 6.6L Duramax PPE Main Stud Kit
Regular price $229.49 USDSale price $229.49 USD Regular priceUnit price / per$254.99 USDSale -
PPE 2001-2016 GM 6.6L Duramax Stage 1 Performance Camshaft – Alt Fire
Regular price $629.99 USDSale price $629.99 USD Regular priceUnit price / per$699.99 USDSale -
PPE 2001-2016 GM 6.6L Duramax Stage 1 Performance Camshaft – Standard Fire
Regular price $629.99 USDSale price $629.99 USD Regular priceUnit price / per$699.99 USDSale -
PPE 2004-2010 GM 6.6L Duramax Valve Cover Kit - No Pillars
Regular price From $269.99 USDSale price From $269.99 USD Regular priceUnit price / per$299.99 USDSale -
PPE 2005-2010 GM 6.6L Duramax Valve Cover Kit - With Pillars
Regular price $305.99 USDSale price $305.99 USD Regular priceUnit price / per$339.99 USDSale -
PPE 2004.5-2005 GM 6.6L Duramax High-Flow Exhaust Manifold and Up-Pipe Kit
Regular price From $1,121.39 USDSale price From $1,121.39 USD Regular priceUnit price / per$1,245.99 USDSale -
PPE 2001-2016 GM 6.6L Duramax Dry Sump Oil Line Kit
Regular price $629.99 USDSale price $629.99 USD Regular priceUnit price / per$699.99 USDSale -
PPE 2001-2016 GM 6.6L Duramax Dry Sump 5 Stage Steel Gear Oil Pump
Regular price $1,799.99 USDSale price $1,799.99 USD Regular priceUnit price / per$1,999.99 USDSale -
PPE Engine Oil Fill Delete Plug
Regular price From $17.09 USDSale price From $17.09 USD Regular priceUnit price / per$18.99 USDSale -
PPE 2001-2010 GM 6.6L Duramax Dry Sump Pan
Regular price $494.99 USDSale price $494.99 USD Regular priceUnit price / per$549.99 USDSale -
PPE 2004.5-2005 GM 6.6L Duramax PCV Crankcase Breather Filter Kit
Regular price $359.99 USDSale price $359.99 USD Regular priceUnit price / per$399.99 USDSale -
PPE 2004.5-2005 GM 6.6L LLY Duramax PCV Breather Repair Kit
Regular price $71.99 USDSale price $71.99 USD Regular priceUnit price / per$79.99 USDSale -
PPE Oil Centrifuge Filtration Kit - Topkick - Kodiak
Regular price $539.99 USDSale price $539.99 USD Regular priceUnit price / per$599.99 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.









