Fleece Performance 11-24 Dodge PowerFlo Lift Pump Assembly

If your 2011-2024 Ram 2500 or 3500 with the 6.7L Cummins cranks long after sitting, loses power while towing up a grade, or sets a low rail pressure code, the low pressure supply side is the first place to look. The Fleece Performance PowerFlo FPE-34562 is a complete in-tank lift pump assembly that drops into the factory tank in place of the original module, so the injection pump gets a steady push of fuel instead of fighting for it.

What the lift pump does in a 6.7 Cummins Ram

The high pressure pump on these trucks (a Bosch CP3 through 2018, a CP4.2 from 2019 on) is cooled and lubricated by the diesel it moves. Its job is to build rail pressure, not to pull fuel from the back of the truck. The in-tank lift pump feeds it a positive supply through the filter. When that pump weakens, the injection pump starves under load, wears faster, and rail pressure falls behind what the engine computer asks for.

The PowerFlo uses two gerotor pump sections in one assembly, and Fleece rates it to support up to 800 hp, including dual CP3 setups. An active fill bucket keeps the pickup covered as the tank runs low, which removes the need for a sump or draw straw. Fleece lists operating pressure at 18-20 psi at idle.

Symptoms of a weak lift pump on a 2011-2024 Ram

• Long crank or hard start, worst after the truck sits overnight
• Power falls off on a long pull with a trailer, then comes back when you lift
• Low fuel rail pressure code P0087 with no injector or leak problem found
• Stumble or surge that shows up below a quarter tank
• Whine or buzz from the tank area that grows over time, or a pump that does not prime at key on

How to confirm before you buy

Put a gauge on the supply side at the filter housing and watch it at idle and under load, then log rail pressure desired against actual with a scan tool. Change the fuel filter and drain the water separator first, since a plugged filter looks like a bad pump. A falling supply reading with a fresh filter points to the pump. If the truck drops into reduced power with no fuel codes at all, check the transmission side; our 68RFE limp mode causes guide covers those checks.

Fitment

This assembly is for 2011-2024 Ram 2500 and 3500 pickups with the 6.7L 24V Cummins. Fleece cross-references it to Ram OE numbers 5145571AA, 5145571AB and 5145625AA. Three limits matter:

• On 2020 and newer trucks it does not work with the factory 50-gallon tank option.
• It is not for cab and chassis trucks. For 4500/5500 chassis cabs, see the PowerFlo for 4500/5500 cab and chassis.
• Fleece publishes separate fitment data for Titan and S&B aftermarket tanks.

A 2010 truck takes a different assembly, the 2010 PowerFlo FPE-34561. Match the number on your old module, or send us your year, VIN and tank size before you order. More parts for these trucks are on our 68RFE parts page.

Install notes

• The tank has to come down to reach the module. Run the tank low first so it is lighter and easier to handle.
• The PowerFlo keeps the factory water-in-fuel sensor, fuel heater and fuel lines, so there is no splicing.
• Use a new tank seal and keep dirt out of the opening while the module is out.
• Before the first start, cycle the key a few times so the pump fills the filter and lines, then check every connection for leaks.
• Running your own lines later? The outlet and return accept a -8 O-ring fitting (3/4-16 thread).
• Fleece validates the pump with up to B20 biodiesel.

Adding fuel for power on a 2013-2018 truck? The Exergy 10mm stroker CP3 and Fleece dual pump hardware kit pair with this pump. Read our 68RFE towing upgrades before you turn it up.

Will this fit my 2021 Ram 3500 with the 50-gallon tank?

No. Fleece states that on 2020 and newer trucks this pump does not work with the factory 50-gallon fuel tank option. It fits the other factory tanks on 2011-2024 Ram 2500 and 3500 pickups.

What factory part numbers does it replace?

Fleece cross-references FPE-34562 to Ram 5145571AA, 5145571AB and 5145625AA.

What fuel pressure should I see after install?

Fleece lists 18-20 psi at idle for this pump.

Does it work on a cab and chassis truck?

No. This assembly is for pickups only. 4500 and 5500 chassis cabs use a separate PowerFlo assembly sized to their tank.

Do I keep my factory fuel heater and water sensor?

Yes. The PowerFlo retains the factory water-in-fuel sensor, fuel heater and fuel lines.

Can I run biodiesel?

Fleece validates PowerFlo pumps with blends up to 20 percent biodiesel (B20).

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