Engines and Components› Oiling Systems

Boundary

Billet Oil Pump Gear Nissan RB26 I6 2.6L Fits OEM Housing 81MM

$299.00

SKU: B00H RB26-81-OPG

In Stock
In Stock
Ships by Jun 19
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Advanced — 4+ hours

Description

The RB26-OPG is a billet oil pump gear that replaces the weak asymmetrical rotor design with Boundary’s race-inspired symmetrical gear pattern. It is engineered for tighter sealing and higher volume, leading to a slight increase in idle pressure and mid-range pressure up to the relief valve limit. The designed crankshaft interface reduces wear on crank surfaces and eliminates the need for crank spline drives, allowing it to be a simple, stock-replacement, drop-in installation.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandBoundary
Part NumberB00H RB26-81-OPG

Videos

RB26 OIL PUMP/REIMAX GEARS INSTALL

RB26 OIL PUMP/REIMAX GEARS INSTALL

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy