Collection: 2004.5-2005 6.6L LLY Duramax Fuel System Upgrades
2004.5-2005 6.6L LLY Duramax Fuel System Upgrades
Boost the performance and efficiency of your 2004.5-2005 6.6L LLY Duramax with our top-tier fuel system upgrades. Designed to improve fuel delivery, optimize combustion, and increase horsepower, these components are essential for drivers looking to push their Duramax to its full potential. Whether...
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Fleece Performance 20 Inch High Pressure Fuel Line 8mm x 3.5mm Line M14 x 1.5 Nuts FPE-34200-20
Regular price $68.00 USDSale price $68.00 USD Regular priceUnit price / per -
Fleece Performance '-8AN Aluminum Male Weld Bung 1/2 inch Register 3/4 inch OD FPE-AN971-08DRD
Regular price $7.30 USDSale price $7.30 USD Regular priceUnit price / per -
FASS Fuel Systems WH-1006-3R Fuel System Wiring Harnesses
Regular price $109.00 USDSale price $109.00 USD Regular priceUnit price / per -
FASS 32283R Replacement Element For FASS Titanium Electric Heater
Regular price $118.75 USDSale price $118.75 USD Regular priceUnit price / per -
FASS CBK1001 Universal Heavy Duty Pickup Frame Clamp Bracket
Regular price $75.00 USDSale price $75.00 USD Regular priceUnit price / per -
FASS DMAX7001 Duramax Diesel Fuel System Flow Enhancer GM Duramax 6.6L 2001-2010
Regular price $426.55 USDSale price $426.55 USD Regular priceUnit price / per -
FASS Fuel Systems Filter Pack XL
Regular price $56.05 USDSale price $56.05 USD Regular priceUnit price / per -
FASS TITANIUM SERIES OPTIONAL ELECTRIC DIESEL FUEL HEATER KIT
Regular price $160.55 USDSale price $160.55 USD Regular priceUnit price / per -
FASS Titanium/Titanium Signature Series Dual Electric Heater Kit Splitter
Regular price $37.05 USDSale price $37.05 USD Regular priceUnit price / per -
FASS Particulate Filter PF3001
Regular price $20.90 USDSale price $20.90 USD Regular priceUnit price / per -
FASS PF3001XL Extended Length Particulate Filter
Regular price $23.75 USDSale price $23.75 USD Regular priceUnit price / per -
FASS Diesel Fuel 5/8 Suction Tube Kit With Bulkhead Fitting
Regular price $84.55 USDSale price $84.55 USD Regular priceUnit price / per -
FASS STK1003 Diesel Fuel 5/8 In Fuel Module Suction Tube Kit Includes Bulkhead Fitting
Regular price $94.05 USDSale price $94.05 USD Regular priceUnit price / per -
FASS Diesel Fuel 5/8 Suction Tube Upgrade Kit
Regular price $71.25 USDSale price $71.25 USD Regular priceUnit price / per -
FASS STK5500 Diesel Fuel Sump Kit With FASS Bulkhead Suction Tube Kit
Regular price $249.00 USDSale price $249.00 USD Regular priceUnit price / per -
FASS STK5500BDiesel Fuel Sump Kit With Suction Tube Upgrade Kit
Regular price $199.00 USDSale price $199.00 USD Regular priceUnit price / per -
FASS STK5500BO Diesel No Drop Fuel Sump Kit (Bowl Only)
Regular price $159.00 USDSale price $159.00 USD Regular priceUnit price / per -
FASS XWS1002 Extreme Water Separator
Regular price $38.00 USDSale price $38.00 USD Regular priceUnit price / per -
FASS XWS3002XL Extended Length Extreme Water Separator
Regular price $32.30 USDSale price $32.30 USD Regular priceUnit price / per -
FASS XWS5000 1-12 Inch Transfer Tank Filter
Regular price $30.40 USDSale price $30.40 USD Regular priceUnit price / per -
XWS-3002XL Extended Length Extreme Water Separator FASS
Regular price $34.00 USDSale price $34.00 USD Regular priceUnit price / per -
Fleece Performance Adapter Fitting -10AN Male to 1.325 Inch Bore FPE-34224-B
Regular price $35.65 USDSale price $35.65 USD Regular priceUnit price / per -
Fleece Performance FPE-34873-A 8 AN to 3/4-16 Straight Male Adapter – Black (Without O-Ring)
Regular price $14.96 USDSale price $14.96 USD Regular priceUnit price / per -
Fleece Performance 1/2 Inch NPT to -10AN Male FPE-34874-A
Regular price $10.95 USDSale price $10.95 USD Regular priceUnit price / per -
Fleece Performance '-6 to 9/16 inch-18 Straight Male Black Fleece Performance w/ O-Ring FPE-APT-916-06
Regular price $10.99 USDSale price $10.99 USD Regular priceUnit price / per -
Fleece Performance 3/8 Inch Black Anodized Aluminum Y Barbed Fitting (For -6 Pushlock Hose) FPE-FIT-Y06-BLK
Regular price $23.99 USDSale price $23.99 USD Regular priceUnit price / per -
Fleece Performance 1/2 Inch Black Anodized Aluminum Y Barbed Fitting (For -8 Pushlock Hose) FPE-FIT-Y08-BLK
Regular price $24.99 USDSale price $24.99 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 Fuel System Upgrades
Boost the performance and efficiency of your 2004.5-2005 6.6L LLY Duramax with our top-tier fuel system upgrades. Designed to improve fuel delivery, optimize combustion, and increase horsepower, these components are essential for drivers looking to push their Duramax to its full potential. Whether you're aiming for better towing performance, more power for off-roading, or improved fuel economy, our fuel system upgrades provide the performance and reliability you need.
High-Performance Fuel System Upgrades for 6.6L LLY Duramax
Our fuel system components for the 2004.5-2005 6.6L LLY Duramax are engineered to maximize fuel flow and improve overall engine efficiency. These upgrades include high-flow fuel injectors, fuel pumps, filters, and other critical components designed to deliver more consistent fuel delivery and better fuel atomization. With these parts, you’ll experience smoother acceleration, improved power output, and optimized fuel efficiency.
Why Choose Our Fuel System Upgrades?
Upgrading your fuel system ensures that your engine receives the proper fuel flow to maximize performance. Whether you’re increasing horsepower for heavy towing, seeking a more responsive throttle, or just looking to improve your truck’s efficiency, these upgrades provide the solution. Our high-performance fuel components will improve combustion efficiency and ensure that your engine is getting the clean, high-quality fuel it needs.
Key Features:
- Increased Fuel Flow: High-flow injectors and pumps provide the fuel your engine needs for optimal performance.
- Enhanced Efficiency: Improved fuel delivery and atomization lead to better combustion, fuel economy, and engine response.
- Reliability: Built to withstand extreme conditions and improve the lifespan of your Duramax fuel system.






