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 16 Inch High Pressure Fuel Line 8mm x 3.5mm Line M14 x 1.5 Nuts FPE-34200-16
Regular price $60.00 USDSale price $60.00 USD Regular priceUnit price / per -
Fleece Performance 17 Inch High Pressure Fuel Line 8mm x 3.5mm Line M14 x 1.5 Nuts FPE-34200-17
Regular price $62.00 USDSale price $62.00 USD Regular priceUnit price / per -
Fleece Performance 18 Inch High Pressure Fuel Line 8mm x 3.5mm Line M14 x 1.5 Nuts FPE-34200-18
Regular price $64.00 USDSale price $64.00 USD Regular priceUnit price / per -
Fleece Performance 19 Inch High Pressure Fuel Line 8mm x 3.5mm Line M14 x 1.5 Nuts FPE-34200-19
Regular price $66.00 USDSale price $66.00 USD Regular priceUnit price / per -
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 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-34563 PowerFlo® In-Tank Lift Pump for 2011-2016 LML Duramax (Short Bed)
Regular price $769.00 USDSale price $769.00 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 CP3 Return Fitting FPE-CP3-RTRN
Regular price $15.95 USDSale price $15.95 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 Return Fuel Pressure Test Port for 2011-2016 LML Duramax FPE-FPTP-GM-1116
Regular price $31.49 USDSale price $31.49 USD Regular priceUnit price / per -
H&S Motorsports 2011-2016 GM 6.6L Dual High Pressure Fuel Kit Serpentine Belt
Regular price $69.00 USDSale price $69.00 USD Regular priceUnit price / per -
Fleece Performance CP3 Regulator Extension Harness for 11-16 6.6L Duramax Fleece FPE-HAR-CP3-EXT
Regular price $29.99 USDSale price $29.99 USD Regular priceUnit price / per -
Fleece Performance Fuel Pressure Regulator and Multiuse Pigtail FPE-HAR-FPR-PT
Regular price $27.99 USDSale price $27.99 USD Regular priceUnit price / per -
Fleece Performance Replacement Sensor Connector With Pigtail for L5P Duramax and GM Vehicles (L5P Duramax Sensor Pigtail 1) FPE-HAR-MU-PT-1
Regular price $37.99 USDSale price $37.99 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 -
Fleece Performance Multiuse Pressure Sensor 36 Inch Pigtail FPE-HAR-MU-PT-6
Regular price $24.99 USDSale price $24.99 USD Regular priceUnit price / per -
Fleece Performance Multi-Use Sensor Pigtail - No 8 FPE-HAR-MU-PT-8
Regular price $14.99 USDSale price $14.99 USD Regular priceUnit price / per -
Fleece Performance 18 Inch Rail Pressure Sensor Extension Harness FPE-HAR-RP-EXT
Regular price $43.04 USDSale price $43.04 USD Regular priceUnit price / per -
Fleece Performance Rail Pressure Sensor 6 Inch Pigtail FPE-HAR-RP-PT
Regular price $25.99 USDSale price $25.99 USD Regular priceUnit price / per -
Fleece Performance Replacement CP3 feed hose for LML CP3 Conversion Kit FPE-LML-HS-FEED
Regular price $19.99 USDSale price $19.99 USD Regular priceUnit price / per -
Fleece Performance Dosing Injector Fuel Line Disconnect Tool for 11-16 Duramax FPE-LML-QCDT
Regular price $16.79 USDSale price $16.79 USD Regular priceUnit price / per -
Fleece Performance 1/2 Inch NPT Hex Socket Plug Black FPE-NPT-12
Regular price $4.49 USDSale price $4.49 USD Regular priceUnit price / per -
Fleece Performance 1/4 Inch NPT Hex Socket Plug Black FPE-NPT-14
Regular price $2.99 USDSale price $2.99 USD Regular priceUnit price / per -
Fleece Performance 1/8 Inch NPT Hex Socket Plug Black FPE-NPT-18
Regular price $2.99 USDSale price $2.99 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..




















