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FASS Fuel Systems was able to develop the quietest fuel air separation system on the market
This kit was designed to avoid check engine lights
6L GM Diesel
WILL NOT WORK WITH DUAL RADIATOR VEHICLES
Alliant Power Remanufactured HP4 High Pressure Fuel Injection Pump FASS Fuel Systems was ableThe Alliant AP54950 Remanufactured HP4 Injection Pump is a direct replacement for the HPFP in your 17 25 L5P Duramax L5D Duramax. This reman pump is rebuilt to the highest standards and thoroughly tested to ensure years of reliability. Backed by Alliant's 2 Year Unlimited Mileage Warranty.
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