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DHD 12678662W L5P High Pressure Fixed Shaft Duramax Oil Pump 2017-2021 6.6L

12678662W - 19E
High Pressure Duramax Oil Pump
Pricing: $299.00

Free Shipping


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..





Shipping Information

  • Item Requires Shipping
  • 5.0 lbs.
  • W4.0000” x H4.0000” x L8.0000”
  • Free Shipping

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