Collection: 2011-2016 6.6L LML Duramax Fuel System Upgrades
2011-2016 6.6L LML Duramax Fuel System Upgrades
Upgrade your 2011-2016 6.6L LML Duramax with our high-performance fuel system components designed to improve fuel efficiency, increase power output, and ensure your engine runs at its optimal performance. Whether you're looking to enhance your truck’s towing capacity, improve throttle response, or gain...
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Fleece Performance 3/4 Inch NPT Hex Socket Plug Black FPE-NPT-34
Regular price $4.99 USDSale price $4.99 USD Regular priceUnit price / per -
Fleece Performance 3/8 Inch NPT Hex Socket Plug Black FPE-NPT-38
Regular price $2.99 USDSale price $2.99 USD Regular priceUnit price / per -
Fleece Performance '-6 AN Straight to Hose Barb FPE-PL-00-06
Regular price $6.99 USDSale price $6.99 USD Regular priceUnit price / per -
Fleece Performance '-8 Straight to Hose Barb Black FPE-PL-00-08
Regular price $7.99 USDSale price $7.99 USD Regular priceUnit price / per -
Fleece Performance '-6 90 Deg to Hose Barb Black FPE-PL-90-06
Regular price $12.99 USDSale price $12.99 USD Regular priceUnit price / per -
Fleece Performance '-8 90 Degree to Hose Barb Black FPE-PL-90-08
Regular price $13.99 USDSale price $13.99 USD Regular priceUnit price / per -
FASS Adjustable Fuel Pressure Regulator
Regular price $141.55 USDSale price $141.55 USD Regular priceUnit price / per -
FASS High Output Heater Disk
Regular price $160.55 USDSale price $160.55 USD Regular priceUnit price / per -
Fleece Performance Replacement High Pressure Fuel Line for LML CP3 Conversions FPE-FL-LML-CP3-HP
Regular price $179.99 USDSale price $179.99 USD Regular priceUnit price / per -
Fleece Performance FPE-PL-45-06 6AN 45-Degree to Hose Barb – Black
Regular price $12.99 USDSale price $12.99 USD Regular priceUnit price / per -
Fleece Performance '-8 45 Degree to Hose Barb Black FPE-PL-45-08
Regular price $12.99 USDSale price $12.99 USD Regular priceUnit price / per -
Fleece Performance -10 90 Deg to Hose Barb Black FPE-PL-90-10
Regular price $14.99 USDSale price $14.99 USD Regular priceUnit price / per -
Fleece Performance 3/14 Inch-16 Hex Socket Plug w/ O-Ring FPE-SP-3416
Regular price $4.99 USDSale price $4.99 USD Regular priceUnit price / per -
Fleece Performance Replacement CP3 Return Hose for LML CP3 Conversion Kit FPE-LML-HS-RTRN
Regular price $19.99 USDSale price $19.99 USD Regular priceUnit price / per -
Fleece Performance FPE-34805-A 10 AN to 7/8-14 Straight Male Adapter – Black (Without O-Ring)
Regular price $14.96 USDSale price $14.96 USD Regular priceUnit price / per -
Fleece Performance 12mm Quick Connect to 3/4 Inch-16 O-ring (-8 AN) FPE-34550-A
Regular price $15.99 USDSale price $15.99 USD Regular priceUnit price / per -
Fleece Performance 5/16 Inch Quick Connect to 3/4 Inch-16 O-ring (-8 AN) FPE-34552-A
Regular price $11.99 USDSale price $11.99 USD Regular priceUnit price / per -
Fleece Performance 1/2 Inch Hose Barb to 3/4 Inch-16 O-ring (-8 AN) FPE-34553-A
Regular price $10.99 USDSale price $10.99 USD Regular priceUnit price / per -
Fleece Performance 5/8 Inch Hose Barb to 3/4 Inch-16 O-ring (-8 AN) FPE-34554-A
Regular price $12.99 USDSale price $12.99 USD Regular priceUnit price / per -
Fleece Performance 1/2 Inch Quick Connect to 3/4 Inch-16 O-ring (-8 AN) FPE-34900-A
Regular price $16.99 USDSale price $16.99 USD Regular priceUnit price / per -
Fleece Performance FPE-34564 PowerFlo® In-Tank Lift Pump for 2011-2016 LML Duramax (Long Bed)
Regular price $769.00 USDSale price $769.00 USD Regular priceUnit price / per -
Fleece Performance 1/2 Inch CP3 Feed Fitting FPE-CP3-FEED
Regular price $15.95 USDSale price $15.95 USD Regular priceUnit price / per -
Fleece Performance FPE-AN971-10DRD 10AN Aluminum Male Weld Bung – 5/8" Register, 7/8" OD
Regular price $8.35 USDSale price $8.35 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 Fuel Systems Filter Pack XL
Regular price $56.05 USDSale price $56.05 USD Regular priceUnit price / per
2011-2016 6.6L LML Duramax Fuel System Upgrades
Upgrade your 2011-2016 6.6L LML Duramax with our high-performance fuel system components designed to improve fuel efficiency, increase power output, and ensure your engine runs at its optimal performance. Whether you're looking to enhance your truck’s towing capacity, improve throttle response, or gain better fuel economy, our fuel system upgrades are the perfect solution for ensuring your Duramax performs at its best.
Premium Fuel System Components for 6.6L LML Duramax
Our fuel system components for the 2011-2016 6.6L LML Duramax include upgraded fuel injectors, lift pumps, fuel filters, and more. These high-quality parts are designed to ensure that your engine receives the correct fuel flow for maximum efficiency and power. From improving fuel delivery for better performance to optimizing the system for better longevity, our fuel system upgrades are essential for both everyday driving and heavy-duty applications.
Why Choose Our Fuel System Upgrades?
Upgrading your fuel system is crucial for maintaining optimal engine performance, especially when increasing horsepower or towing heavy loads. Our fuel system components are designed to handle higher fuel flow, improve fuel atomization, and ensure consistent performance under heavy loads. Whether you’re modifying your Duramax for performance or simply looking to enhance reliability and efficiency, these fuel system upgrades will help keep your engine running smoothly and efficiently.
Key Features:
- Increased Power and Efficiency: Optimized fuel delivery for better combustion and higher horsepower.
- Enhanced Fuel Flow: Components designed for consistent and reliable fuel flow under demanding conditions.
- Improved Durability: Built to withstand high-performance applications and heavy-duty use..








