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Fleece Performance PowerFlo In-Tank Lift Pump – LML Duramax Long Bed (FPE-34564)
Protect your LML’s expensive CP4 injection pump and feed serious power with the Fleece Performance PowerFlo in-tank lift pump.
Factory LML trucks rely on the CP4 to suck fuel from the tank under vacuum. That constant load is one of the biggest contributors to premature CP4 failure. The PowerFlo changes the game by delivering positive fuel pressure (10-13 psi at idle) directly to the injection pump, dramatically reducing strain while supporting up to 800 hp — including dual CP3 setups.
Key Features
- True in-tank design — Direct OEM-style replacement that retains the factory fuel lines and installs far faster than external lift pumps
- Dual OEM-quality gerotor pumps — Higher flow and superior reliability compared to the single factory pump
- Active fill bucket — Eliminates the need for tank sumps, draw straws, or extra filtration and solves the classic ¼-tank starvation issues
- Aftermarket ready — Pump outlet and return are threaded for -8 O-ring fittings (¾"-16) if you want to run custom lines or filters
- Supports up to 800 horsepower
- Validated for use with up to 20% biodiesel
- Lifetime limited parts warranty
- CARB EO D-834-22
Fitment: 2011-2016 Chevrolet Silverado / GMC Sierra 2500HD & 3500HD LML Duramax with long bed (8') and single fuel tank only. (Short bed trucks require FPE-34563)
The cleanest, most reliable way to supply your high-performance LML with the fuel volume and pressure it needs while giving your CP4 a much longer life.
Fleece Performance PowerFlo In-Tank Lift Pump – LML Duramax Long Bed (FPE-34564)
Protect your LML’s expensive CP4 injection pump and feed serious power with the Fleece Performance PowerFlo in-tank lift pump.
Factory LML trucks rely on the CP4 to suck fuel from the tank under vacuum. That constant load is one of the biggest contributors to premature CP4 failure. The PowerFlo changes the game by delivering positive fuel pressure (10-13 psi at idle) directly to the injection pump, dramatically reducing strain while supporting up to 800 hp — including dual CP3 setups.
Key Features
True in-tank design — Direct OEM-style replacement that retains the factory fuel lines and installs far faster than external lift pumps
Dual OEM-quality gerotor pumps — Higher flow and superior reliability compared to the single factory pump
Active fill bucket — Eliminates the need for tank sumps, draw straws, or extra filtration and solves the classic ¼-tank starvation issues
Aftermarket ready — Pump outlet and return are threaded for -8 O-ring fittings (¾"-16) if you want to run custom lines or filters
Supports up to 800 horsepower
Val[...]
Fleece Performance PowerFlo In-Tank Lift Pump – LML Duramax Long Bed (FPE-34564)
Protect your LML’s expensive CP4 injection pump and feed serious power with the Fleece Performance PowerFlo in-tank lift pump.
Factory LML trucks rely on the CP4 to suck fuel from the tank under vacuum. That constant load is one of the biggest contributors to premature CP4 failure. The PowerFlo changes the game by delivering positive fuel pressure (10-13 psi at idle) directly to the injection pump, dramatically reducing strain while supporting up to 800 hp — including dual CP3 setups.
Key Features
- True in-tank design — Direct OEM-style replacement that retains the factory fuel lines and installs far faster than external lift pumps
- Dual OEM-quality gerotor pumps — Higher flow and superior reliability compared to the single factory pump
- Active fill bucket — Eliminates the need for tank sumps, draw straws, or extra filtration and solves the classic ¼-tank starvation issues
- Aftermarket ready — Pump outlet and return are threaded for -8 O-ring fittings (¾"-16) if you want to run custom lines or filters
- Supports up to 800 horsepower
- Validated for use with up to 20% biodiesel
- Lifetime limited parts warranty
- CARB EO D-834-22
Fitment: 2011-2016 Chevrolet Silverado / GMC Sierra 2500HD & 3500HD LML Duramax with long bed (8') and single fuel tank only. (Short bed trucks require FPE-34563)
The cleanest, most reliable way to supply your high-performance LML with the fuel volume and pressure it needs while giving your CP4 a much longer life.