Tomei RB Oil Pump Collar for Early‑Gen Engines

Description

Product Overview

The Tomei oil pump collar is a precision‑engineered component designed specifically for early‑generation Nissan RB engines (RB26DETT, RB25DET, RB20DET) that use stock crankshafts. Crafted from high‑strength steel, the collar enlarges the contact surface between the crankshaft snout and the oil‑pump drive gear, mitigating the narrow‑drive geometry found in original equipment. This results in reduced wear, smoother gear engagement and more reliable oil‑pump operation, especially when paired with high‑flow or aftermarket pump setups. Dimensions are optimized to fit the OEM crank snout, with a package size of 7 × 6 × 3 inches and a weight of 1 lb.

Usage

Ideal for street‑driven performance builds, track day preparations and engine rebuild projects, the collar ensures stable oil pressure under increased load conditions. Installers who are upgrading to a larger capacity oil pump or adding a turbocharger will benefit from the reinforced drive geometry, which helps prevent pump slippage and premature failure. The component is suited for both professional mechanics and experienced DIY enthusiasts comfortable with minor crank snout modifications.

Why Choose Us

Tomei’s reputation for durability and engineering excellence backs this product. Each collar undergoes rigorous CNC machining and heat‑treatment processes to meet automotive OEM standards. Our quality assurance includes dimensional inspection and material certification, ensuring a perfect fit and long‑term reliability. By choosing this collar, you gain a proven solution that directly addresses the weak points of stock oil‑pump drives, delivering peace of mind for high‑performance applications.

Key Features

• Optimized for OEM RB crankshafts – perfect fit for RB26DETT, RB25DET, RB20DET
• Enlarged contact area reduces wear and improves gear engagement
• Supports high‑flow and aftermarket oil‑pump upgrades
• High‑strength steel construction with heat‑treated durability
• Easy installation with minor crank snout modification

FAQ

Do I need special tools to install the collar?

Installation requires standard hand tools and a torque wrench. A small machining of the crank snout may be necessary to achieve the correct fit, which can be performed with a lathe or by a professional machine shop.

Will this collar work with aftermarket oil pumps?

Yes, the design specifically addresses the increased load from high‑flow and aftermarket pumps, ensuring reliable drive without slippage.

Is the collar compatible with later‑generation RB engines?

The collar is engineered for early‑gen RB engines with the original narrow‑drive geometry. Later‑gen models with different crank dimensions may require a different part.

Can I install the collar on a used engine rebuild?

Absolutely. It is an ideal upgrade for rebuilt engines, providing enhanced durability and oil pressure stability for future performance modifications.

What warranty does Tomei offer?

Tomei provides a limited one‑year warranty covering material defects and workmanship, reflecting confidence in the product’s quality.