Alliant Power Reman HP4 Injection Pump & Install Kit - GM 6.6L L5P/L5D Duramax - 2017-2023

The Alliant AP54850 Remanufactured HP4 Injection Pump is a direct replacement for the HPFP in your 17-23 L5P Duramax / 19-23 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. Includes complete installation kit.