Boundary Nissan GT-R Billet N1 Oil Pump GearS

Boundary Nissan GT-R Billet N1 Oil Pump GearS

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Boundary billet oil pump gears Nissan RB26 N1. Drop in fitment to factory pump housing. Featuring Coldflow surface treatment for anti-friction and wear resistance.


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 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 in excess of 2000whp, with higher efficiency, less friction, and backed by one of the industries best warranty’s.

Oil Pump Gear Features

  • 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.