Sale

Engines and Components› Oiling Systems

Tomei

OVERSIZED OIL PUMP RB26DETT RB25DE(T) RB20DE(T)

$1,380.00 $1,281.54 Save $98.46

SKU: T00F TB203A-NS05A

Out of Stock
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Advanced — 4+ hours

Overview

The RB26DETT engine is prone to oil lubrication issues during high-performance driving (circuit and drag racing), which often leads to engine failure. This results in abnormal wear of main bearings due to insufficient oil pressure. The stock oil pump cannot supply adequate oil pressure at the extreme engine speeds required by high-powered RB26 engines. Additionally, the stock pump's weak sintered metal gear is prone to breaking under increased power and higher engine speeds, which can cause instantaneous engine loss. The TOMEI RB26 oil pump features a larger pump gear made from high-strength materials, providing a greater oil flow rate to the engine. It also includes an external oil pressure adjuster.
Show original supplier description
OVERSIZED OIL PUMP RB26DETT RB25DE(T) RB20DE(T)

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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

BrandTomei
Part NumberT00F TB203A-NS05A

Videos

Skyline GTR TOMEI RB28 (Break in) -SleepLessCrew

Skyline GTR TOMEI RB28 (Break in) -SleepLessCrew
RB Oil Pump Problems!

RB Oil Pump Problems!
Nisaan RB engine oil pump modification.

Nisaan RB engine oil pump modification.
RB26 OIL PUMP/REIMAX GEARS INSTALL

RB26 OIL PUMP/REIMAX GEARS INSTALL
RB25 Oil Pump Gasket and Seal replacement | S13 Drift Build

RB25 Oil Pump Gasket and Seal replacement | S13 Drift Build
RB26 WATER PUMP AND OIL PUMP INSTALL

RB26 WATER PUMP AND OIL PUMP INSTALL

5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold
(760) 282-4645 hello@motormia.co

Buy with Confidence

Returns & Fitment

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

Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

View Full Shipping Policy