Fleece PowerFlo In-Tank Lift Pump (Long Bed) for 2011-2016 Chevy/GMC LML Duramax

Your LML's CP4 is pulling fuel by vacuum from the tank right now. If you have a long bed, here's how to take that stress off it.

From the factory, the LML relies on vacuum from the CP4 to draw fuel. That puts extra stress on the injection pump and can lead to premature failure. The Fleece PowerFlo gives the CP4 positive fuel pressure, cutting strain on the pump and supporting up to 800 hp. This version is for long bed (8') trucks.

PowerFlo features

• The only in-tank lift pump capable of supporting up to 800 hp, per Fleece
• Gives the CP4 positive fuel pressure instead of making it pull fuel by vacuum, which decreases strain on the injection pump
• Direct OEM in-tank replacement that retains the factory fuel lines
• Installs in less than half the time of other high flow lift pumps
• OEM quality dual gerotor: two OEM quality gerotor pumps for more flow capacity and reliability
• Supports up to 800 hp, including dual CP3 pump configurations
• Active fill bucket eliminates tank sumps, draw straws, additional air filtration and the 1/4 tank issues
• Aftermarket capable: outlet and return threaded for a -8 O-ring fitting (3/4"-16 thread)

Cross-reference

• FPE-34563: Short Bed (6.5'), GM/Chevy P/N 13578389 & 13578388
• FPE-34564: Long Bed (8'), GM/Chevy P/N 13578389 & 13578388

Note: For use with single fuel tank configurations only. For use on pickup style trucks only; for cab and chassis, verify your pump P/N against the cross-reference table.

Specs

• Bed length: Long Bed (8')
• Patent: US Patent No. D910,081
• Engine: 6.6L LML Duramax
• Part number: FPE-34564
• CARB EO: D-834-22

Why we run it

From the factory, the LML's CP4 pulls fuel from the tank on vacuum, which puts extra stress on a pump that's expensive when it goes. The PowerFlo pushes positive pressure to the CP4 instead, takes that strain off and has the dual gerotor flow to support up to 800 hp. It drops right into the tank on the factory lines. PPEI recommends a PowerFlo on every LML, and we run them on our own trucks.

Fitment

• Chevrolet Silverado 2500 HD: 2015-2016 High Country; 2011-2016 LT, LTZ, WT
• Chevrolet Silverado 3500 HD: 2015-2016 High Country; 2011-2016 LT, LTZ, WT
• GMC Sierra 2500 HD: 2015-2016 Base; 2011-2016 Denali, SLE, SLT; 2011-2014 WT
• GMC Sierra 3500 HD: 2015-2016 Base; 2011-2016 Denali, SLE, SLT; 2011-2014 WT