ISR Performance OE Replacement Water Pump - Nissan RB20DET

The ISR Performance OE Replacement Water Pump is an aftermarket OE-style replacement for the factory water pump on the Nissan RB20DET (rear-wheel-drive applications only). Built to the same dimensional spec as the factory pump and intended as a direct service replacement.

What It Does

The water pump is a wear item on any RB engine. As bearings wear and seals fail, a leaking water pump on an RB20DET becomes a real problem, especially on builds that have been sitting in storage or pulled out of older Skyline shells for swap projects. This pump performs identically to the OEM unit at a fraction of the cost, with a new gasket and pulley studs included for a complete refresh job.

This is not a genuine OEM Nissan pump. It's an aftermarket OE Replacement built to the factory spec, similar to what you'd get if you went to a parts counter for a generic replacement.

Critical Fitment Note

RB20DET RWD only. This pump is designed for rear-wheel-drive RB20DET applications and does NOT fit the AWD variants of the RB20. Confirm your drivetrain configuration before ordering. Not compatible with RB25DET or RB26DETT.

Fitment

• Nissan RB20DET (RWD applications, R32 GTS-t and similar)

What's in the Box

• 1x OE replacement water pump for RB20DET
• 1x OE replacement water pump gasket
• 4x pulley studs

Product Details

Brand: ISR Performance

Part Number: OE-21010-70TY5

Type: Engine Water Pump (OE Replacement)

Engine Fitment: Nissan RB20DET (RWD only)

Drivetrain Restriction: RWD applications only - not for AWD RB20

OEM vs Aftermarket: Aftermarket OE-style replacement (not genuine Nissan)

Application: Engine refresh, rebuild, or worn pump replacement

Sold: Individually (includes gasket and pulley studs)

Legality: Off-road and competition use only