
Collection: 2004.5-2005 6.6L LLY Duramax Transmission
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PPE 2001-2019 GM 6.6L Duramax Premium High-Efficiency Spin-On Transmission Fluid Filter
Regular price $17.99 USDSale price $17.99 USD Regular priceUnit price / per$19.99 USDSale -
Fleece Performance FPE-TL-LB7-LLY Allison Transmission Cooler Lines for 2001-2005 (LB7-LLY)
Regular price $269.00 USDSale price $269.00 USD Regular priceUnit price / per -
TapShifter Chevy Duramax Allison 2003-2005
Regular price $472.95 USDSale price $472.95 USD Regular priceUnit price / per -
Deep Sump Trans Pan Chevy Duramax Allison 1000
Regular price $421.95 USDSale price $421.95 USD Regular priceUnit price / per -
Allison Valve Body Chevy LLY Duramax 2004-2006
Regular price $1,179.95 USDSale price $1,179.95 USD Regular priceUnit price / per -
Proforce Torque Converter Chevy Duramax Allison 2001-2010
Regular price $1,268.95 USDSale price $1,268.95 USD Regular priceUnit price / per -
ROADMASTER TRANSMISSION & CONVERTER PACKAGE ALLISON GMC/CHEVY SIERRA/SILVERADO 2500HD/3500HD 6.6L DURAMAX 2004.5-2006 4WD
Regular price $4,495.00 USDSale price $4,495.00 USD Regular priceUnit price / per -
Transmission Filter Service Kit Chevy Allison 1000 2001-2016
Regular price $46.95 USDSale price $46.95 USD Regular priceUnit price / per -
Fleece Performance NSBU Pigtail for 2004.5–2005 GM 2500/3500 Duramax with Allison Transmission
Regular price $69.99 USDSale price $69.99 USD Regular priceUnit price / per -
ATS Allison LCT1000 Transmission Package 4WD 2001-2019 6.6L LB7 LLY LMM LML L5P Duramax
Regular price From $5,363.95 USDSale price From $5,363.95 USD Regular priceUnit price / per -
ATS Allison Performance Valve Body Fits 2001-2010 6.6L Duramax
Regular price $857.68 USDSale price $857.68 USD Regular priceUnit price / per -
Fleece Performance FPE-ALILKR AlliLocker Torque Converter Lock-Up Controller
Regular price $179.00 USDSale price $179.00 USD Regular priceUnit price / per -
PPE 2001-2019 GM 6.6L Duramax w/ Allison 1000/2000/2400 Transmission Heavy-Duty Cast Aluminum Standard-Depth Transmission Pan
Regular price From $242.99 USDSale price From $242.99 USD Regular priceUnit price / per$269.99 USDSale -
PPE 2001-2016 GM 6.6L Duramax Billet Input Shaft
Regular price $899.99 USDSale price $899.99 USD Regular priceUnit price / per$999.99 USDSale -
PPE Race Billet Stator Triple Clutch Torque Converter
Regular price From $1,619.99 USDSale price From $1,619.99 USD Regular priceUnit price / per$1,799.99 USDSale -
PPE 2003-2005 GM 6.6L Duramax w/ Allison Transmission Bar and Plate Transmission Cooler
Regular price $314.99 USDSale price $314.99 USD Regular priceUnit price / per$349.99 USDSale -
PPE 2001-2007 GM 6.6L Duramax w/ Allison Transmission Transfer Case Brace
Regular price $134.99 USDSale price $134.99 USD Regular priceUnit price / per$149.99 USDSale -
PPE 2001-2006 GM 6.6L Duramax Heavy-Duty Transfer Case Pump Housing Upgrade Kit (Pump Rub Kit)
Regular price $67.49 USDSale price $67.49 USD Regular priceUnit price / per$74.99 USDSale -
PPE 2001-2016 GM 6.6L Duramax Heavy-Duty Cast Aluminum PTO Side Plate Cover
Regular price From $71.99 USDSale price From $71.99 USD Regular priceUnit price / per$79.99 USDSale -
PPE Deep Trans Pan Filter - GM Allison
Regular price $16.19 USDSale price $16.19 USD Regular priceUnit price / per$17.99 USDSale -
PPE 2001-2019 GM 6.6L Duramax w/ Allison 1000/2000/2400 Transmission Heavy-Duty Cast Aluminum Deep Transmission Pan
Regular price From $332.99 USDSale price From $332.99 USD Regular priceUnit price / per$369.99 USDSale -
PPE 2003-2005 GM 6.6L Duramax Performance Transmission Cooler Purple Clips
Regular price $197.99 USDSale price $197.99 USD Regular priceUnit price / per$219.99 USDSale -
ATS ALLISON BILLET INPUT SHAFT FITS 2001-2016 6.6L DURAMAX
Regular price $793.00 USDSale price $793.00 USD Regular priceUnit price / per -
ATS ALLISON DEEP TRANSMISSION PAN FITS 2001-2018 6.6L DURAMAX 301-900-4248
Regular price $372.75 USDSale price $372.75 USD Regular priceUnit price / per -
ATS ALLISON BILLET INTERMEDIATE SHAFT FITS 2001-2010 6.6L DURAMAX 304-920-4248
Regular price $495.00 USDSale price $495.00 USD Regular priceUnit price / per -
ATS Allison LCT1000 Transmission Package 2WD 2001-2019 6.6L LB7 LLY LMM LML L5P Duramax
Regular price From $5,310.32 USDSale price From $5,310.32 USD Regular priceUnit price / per -
ATS AUXILIARY TRANSMISSION COOLER KIT WITH 3/8 INCH LINES
Regular price $439.99 USDSale price $439.99 USD Regular priceUnit price / per -
Fleece Performance Multiuse Sensor 6 Inch Pigtail FPE-HAR-MU-PT-5
Regular price $19.99 USDSale price $19.99 USD Regular priceUnit price / per
2004.5-2005 6.6L LLY Duramax Transmission Parts
Enhance the performance and durability of your 2004.5-2005 6.6L LLY Duramax with our premium transmission parts. Designed to improve shifting precision, increase towing capacity, and extend transmission life, these components are ideal for those looking to push their truck to the limit. Whether you're hauling heavy loads, off-roading, or just enhancing your driving experience, our high-performance transmission parts are built to withstand extreme conditions.
High-Performance Transmission Parts for 6.6L LLY Duramax
Our transmission parts for the 2004.5-2005 6.6L LLY Duramax are built to provide long-lasting performance and reliability. These upgrades include heavy-duty torque converters, transmission cooler kits, billet transmission pans, shift kits, and more. Each component is designed to handle the increased power and torque generated by the Duramax engine, providing improved shifting performance, better heat management, and greater overall durability.
Why Choose Our Transmission Parts?
Upgrading your 2004.5-2005 6.6L LLY Duramax transmission with our high-performance parts ensures that your transmission can handle heavy-duty applications with ease. Whether you're towing, racing, or off-roading, these parts enhance your transmission’s capability and longevity. Our parts are designed to reduce wear and tear, prevent overheating, and maintain smoother shifting, providing an overall better driving experience.
Key Features:
- Improved Shifting Performance: Shift kits and components for smoother and more responsive shifts.
- Enhanced Durability: Heavy-duty parts designed to handle higher power and extreme conditions.
- Better Heat Management: Transmission cooler kits and billet pans to prevent overheating and extend transmission life.