FLEECE FPE-34790 2007.5-2010 GM POWERFLO IN-TANK LIFT PUMP

Unlock consistent fuel supply and big-power potential in your LMM Duramax with the FLEECE FPE-34790 2007.5-2010 GM POWERFLO IN-TANK LIFT PUMP. This direct in-tank OEM replacement supports up to 800 hp, cures common 1/4-tank starvation issues, and retains your factory fuel heater, water-in-fuel sensor, and OE quick-connect lines for a clean, fast install. Fleece FPE-34790, 2007.5-2010 LMM Duramax lift pump, GM PowerFlo in-tank lift pump, 6.6L Duramax fuel system upgrade, dual gerotor in-tank pump, CPP Diesel Fleece Performance, supports 800 horsepower

Why the Fleece PowerFlo In-Tank Lift Pump

• Only in-tank lift pump in its class capable of supporting up to ~800 hp while feeding the CP3 reliably 
• Direct OEM in-tank replacement—reuses your factory heater, water-in-fuel sensor, and fuel lines 
• Dual gerotor pump design for quiet operation, strong flow, and long life 
• Active fill bucket design eliminates the need for tank sumps/draw straws and helps fix typical 1/4-tank problems 
• Threaded -8 O-ring outlet/return ports for easy integration with aftermarket filters or fuel lines 
• Backed by a lifetime warranty from Fleece Performance Engineering 

Fitment

Engine: 6.6L Duramax LMM (common-rail diesel)
Model Years: 2007.5, 2008, 2009, 2010
Vehicles: 2007.5–2010 Chevrolet Silverado 2500HD / 3500HD & GMC Sierra 2500HD / 3500HD pickup trucks equipped with the LMM Duramax and single rear tank (not cab & chassis) 
Operating Pressure: ~10–13 psi at idle (designed to maintain positive supply to the CP3) 

Important Notes:
– For use on pickup-style trucks only; cab & chassis applications must verify OE module part number against the cross-reference list.
– For single-tank configurations only.
– Compatible with certain Titan replacement tanks when noted by Titan/Fleece fitment data; not designed for S&B replacement tanks. 

Cross-Reference & Related Fleece Products on CPP Diesel

• FLEECE FPE-34789 2004.5-2007 GM POWERFLO IN-TANK LIFT PUMP – PowerFlo in-tank solution for 2004.5–2007 LLY/LBZ Duramax trucks. 
• FLEECE FPE-PF-GM-0104 POWERFLO LIFT PUMP FOR 01-04 LB7 DURAMAX – In-tank PowerFlo module for early 2001–2004 LB7 applications. 
• FLEECE FPE-DMAX-CP3-ADPT CP3 ADAPTER FOR 6.6L DURAMAX – Supports CP3 conversions that pair perfectly with PowerFlo lift pumps. 
• FLEECE FPE-LML-HS-FEED REPLACEMENT CP3 FEED HOSE FOR LML CP3 CONVERSION KIT – Quality feed hose upgrade for GM CP3 conversion setups. 

The PowerFlo in-tank lift pump is engineered to support up to about 800 hp worth of fuel demand when paired with the right CP3, injectors, and tuning—far beyond what the factory module can reliably handle.

Yes. The integrated active fill bucket keeps the pump supplied with fuel at lower indicated tank levels, eliminating the typical 1/4-tank problems seen with frame-mounted lift pumps and draw-straw setups.

For 2007.5–2010 LMM Silverado/Sierra 2500HD/3500HD pickups with the OEM style in-tank module, this assembly drops into the tank like the factory unit, reusing the stock electrical connector, heater, water-in-fuel sensor, and quick-connect lines. No sumps or draw-straws are required. 

Yes. The outlet and return ports are threaded for -8 O-ring fittings (3/4"-16), making it easy to adapt to aftermarket filters, larger feed/return lines, or custom fuel system plumbing. 

Fleece backs the PowerFlo line with a lifetime limited warranty when used in approved applications, giving you long-term confidence in your fuel system upgrade.

Yes. Like many automotive components, this product carries a California Proposition 65 warning for potential exposure to chemicals known to cause cancer and reproductive harm. See the Spec table for the official link. 

Specifications for FLEECE FPE-34790