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USD 769
Part #: FPE-34564

Fleece FPE-34564 PowerFlo In-Tank Lift Pump

Vehicle Fitment:
2011-2016 GM 6.6L Duramax LML (Long Bed) | See full application list below
Part #: FPE-34564
★★★★★ ★★★★★ 3 Reviews
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Put the Fleece FPE-34564 PowerFlo Lift Pump in your 2011-2016 GM 6.6L Duramax LML and give your truck enough fuel to support 800HP! Unlike other aftermarket fuel pumps, the PowerFlo lift pump goes in your fuel tank to replace the OE unit. Because this is an in-tank replacement, you can retain all of your factory equipment like your fuel lines, water-in-fuel sensor, and your factory fuel heater. As an added bonus, it installs in half the time since it hooks up to your existing components. Using a dual OE quality gerotor design, the PowerFlo Lift Pump gives you reliable and consistent fuel flow even in dual CP3 pump applications.

Made for a seamless installation, the PowerFlo Lift Pump doesn't require the use of a sump, draw straw, or additional filtration. The PowerFlo does not suffer from the 1/4 tank issues associated with other aftermarket fuel systems. For the diesel owner that would prefer to build their own fuel system, the PowerFlo outlet and return is threaded to accept a -8 O-ring fitting (3/4"-16 thread). With the threaded outlet and return, you can add your own custom fuel lines, or aftermarket filtration. Each pump is ready to install and comes backed by the Fleece Performance Lifetime Warranty. 

  • In-Tank Direct Replacement
  • Supplies Enough Fuel For 800HP
  • Increase Reliability From Dual Gerotor Design
  • Seamless Integration - No Need Install All New Fuel System Plumbing
  • Lifetime Warranty
Shipping Restrictions Apply shipping restriction icon This product can not be shipped to these states/provinces: CA

Vehicle Fitment

2011 Chevy 6.6L LML Duramax
2012 Chevy 6.6L LML Duramax
2013 Chevy 6.6L LML Duramax
2014 Chevy 6.6L LML Duramax
2015 Chevy 6.6L LML Duramax
2016 Chevy 6.6L LML Duramax
2011 GMC 6.6L LML Duramax
2012 GMC 6.6L LML Duramax
2013 GMC 6.6L LML Duramax
2014 GMC 6.6L LML Duramax
2015 GMC 6.6L LML Duramax
2016 GMC 6.6L LML Duramax


  • MPN FPE-34564
  • SKU FPE-34564
  • GTIN 670875716162
  • ID 34925
  • Manufacturer Name Fleece Performance
  • Shipping Weight 5.00 lb.
  • Shipping Length 22 in.
  • Shipping Width 10 in.
  • Shipping Height 12 in.
  • Fuel Type Diesel
  • Warranty Info Lifetime
  • Prop 65 Prop 65 WarningWARNING: Cancer & Reproductive Harm -
  • Cross Reference # 13578389, 13578388
  • Internal L3R1


★★★★★ ★★★★★
5.0/5 Stars out of 3 Reviews
great product
Had to save up the cash to get it but it n=makes a noticable response difference and prolongs the life of the cp4 in my truck. Awesome product.
No more 3rd gear nose dive.
Although I didn't receive the koozie and decal to advertise for you. Hint, hint...
#1 upgrade
I've been curious to get one of these and that's why I've been holding off on a lift pump since I bought the truck. And I have no regrets. It's quiet and a piece of cake to install and wire . I think it's starts easier and runs better. I definitely noticed when I punch it because I have been at the dealer numerous times saying how this LML falls on its face when I punch it just pulling out in traffic and they stick to their guns saying that is just the way the turbos spool on the LML. Now I can tell him it's utter BS I can punch it now and it doesn't fall on its face. I feel a lot safer pulling out in traffic. XDP was great to deal with and I will definitely be back for more parts.

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Questions and Answers

Does the lift pump work in series with the CP4 or does it eliminate the CP4?
View Staff Answer 
The Fleece FPE-34564 PowerFlo Lift Pump feeds fuel to the CP4 but does not replace it.

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