Alliant Power Remanufactured HP4 High Pressure Fuel Injection Pump

The 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.