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Fleece Performance 01-13 GM Duramax 6.6L Duramax CP3K (LBZ/LMM Based)

Fleece Performance · New

Fleece Performance 01-13 GM Duramax 6.6L Duramax CP3K (LBZ/LMM Based)

MPN FPE-DMAX-CP3K · Store SKU fpeFPE-DMAX-CP3K

$1,349.00
IN STOCK4 ready to ship

Supplier stock checked 11/7/2026, 1:17:30 PM UTC. Adding a part does not reserve it.

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Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.

Product details

The Fleece Performance CP3K is a modified Duramax LBZ CP3 designed to eliminate the factory fuel flow restriction that begins at 3,000 RPM. If you have a stock CP3 pump you are losing fuel flow and rail pressure after 3000 RPM, which correlates to lost horsepower when you need it most. This cost effective upgrade will allow you to maintain desired fuel rail pressure through your entire RPM range. NOTE: The fuel pressure regulator will need to be scaled appropriately when installed in a 2001-2005 (LB7 or LLY) Duramax CP3K (LBZ/LMM Based)

Manufacturer fitment & guides

Check FPE-DMAX-CP3K against the manufacturer’s application information below.

Part-specific notes

  • Not CARB approved. Destination and intended-use restrictions must be checked before sale.
  • Emissions acknowledgement required before purchase.
  • California Proposition 65: Y

Manufacturer documents

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