TB48 Billet Oil Pump Gears


SKU: TB48-OPG Category: Tag:


Boundary oil pump gears are 100% manufactured in our Dallas, Texas production facility. We start by quenching our chromoly billets from extreme heat and then temper it to a tough indestructible core. After machining, we apply our ColdFlow surface hardening process and complete it to a Mirror Finish. What does all this give you? It gives you a pump with stability over 9000+ RPM, proven over 2000whp, with higher efficiency, less friction, and backed by one of the industry’s best warranties.


  • Mirror Finished and Surface Hardened
  • Surface Ground gears for the ultimate in fitment and performance
  • Indestructible chromoly core
  • Inner and outer gear machined in matched sets
  • Our own race-inspired gerotor design for flow and strength
  • Each set hand, machine, and hardness inspected with Blueprinting Report
  • Available with our MartenWear thermal processing for extreme anti-wear and tested to 13,000 RPM for reliability.

Part Number TB48-OPG Fits:

  • Nissan Patrol Y61(GU) I6 4.6L 1997-2010
  • Nissan Patrol Safari I6 4.6L (equipped with the TB48 engines)


Weight 1 lbs
Dimensions 8 × 6 × 1 in

No Treatment, Standard Heat Treat, MartenWear Treatment