DHD's High Pressure Welded L5P Duramax Oil Pump is an excellent addition to any engine build. DHD shims each pump in-house to produce approx 15-30% more oil pressure safely and dependably. Each pump receives a tig welded drive gear to prevent slippage under high RPM and stress.
All of our wet sump high performance engine builds receive one of these upgraded oil pumps before leaving DHD.
Welded Drive Gear
Brand NEW OE GM Housing
Oil Pressure Modification
Direct Bolt in Replacement
Includes Pump Body to Block O-Ring
GM Pump # 12678662
2017-2021 L5P 6.6L Duramax Engines
Note: Oil pressure readings may vary based on engine configuration, bearing clearances, engine RPM, etc..