Fleece Performance

Problem: The original equipment oil cooler adapter relies on a metal gasket on the oil cooler that over time is prone to leaking as the cooler flexes. Fix: The Fleece Performance oil cooler adapter...

This black 1.5in T4 Pedestal Spacer is designed for use with T4 Turbos installed on Duramax engines when an extra inch of elevation out of the valley is required, although it could be used in any T4...

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...

dress up your engine bay with our billet aluminum oil cap for the Chevy Duramax! Includes O-ring and cam-lock and is a direct replacement for your OEM cover. Dress up your engine bay with our billet...

If you're running an aftermarket positive displacement lift pump like our PowerFlo on your Duramax our fuel primer bulb sealing kit will allow you to eliminate the leak prone primer bulb from your...

Replacement CP3 adapter machined from billet aluminum for the 2001-2016 GM Duramax. Includes new O-rings for the CP3 pump snout and CP3 adapter. APPLICATION NOTES Direct replacement for GM part...

2001-2023 Duramax Billet Coolant Block Off Plate (Replaces GM P/N: 97941204) OE covers are prone to leakage as the gaskets dry out and factory cast covers corrode. Our billet coolant block off plate...

Get rid of oil leaks from the harness connector with our replacement internal wiring harness seal for the Allison LCT and GM 4T65-E. This 20-way pin seal is a direct replacement for the hard to find...

Replacement connector with 6" pigtail for use in multiple locations on MOPAR vehicles including the A/C pressure sensor and transmission pressure transducers. Produced in-house, our manufacturing...

Fleece Performance Cheetah Turbochargers set the industry standard for power, quality, and reliability. The Cheetah series does not require an expensive kit, just bolt it on and go. Designed as a...

PROBLEM: If you are running an aftermarket pump that is mounted external of the fuel tank, you will need to install a draw straw or drill your fuel tank to accommodate a sump. Each of these has some...

Replacement connector and 6" pigtail for the fuel injector wiring harness connector where it mates to the rocker box wiring harness on MY 2003-2005 5.9L Cummins equipped Ram trucks.  Includes...