RB V-belt Water Pump Pulley - 21051-21U00 (Used)

Used Nissan RB V-Belt Water Pump Pulley | RB20 RB25 RB26 RB30 OEM Pulley

Genuine Used RB Engine V-Belt Water Pump Pulley – OEM Nissan Fitment

Replace a worn or missing pulley with this genuine used Nissan RB V-belt water pump pulley, suitable for a wide range of RB20, RB25, RB26 and RB30 engines running V-belt accessory drive setups.

Ideal for engine rebuilds, conversions, restorations and maintaining correct belt alignment across water pump and accessory drive systems.

This is a used OEM component and is sold exactly as pictured.

Features

✅ Genuine Nissan OEM water pump pulley

✅ V-belt drive configuration

✅ Suitable for multiple RB engine platforms

✅ Direct replacement fitment

✅ Maintains correct belt alignment and water pump drive

✅ Ideal for restoration and engine rebuilds

OEM Part Number

• 21051-21U00 (RB V-belt water pump pulley – may vary by engine and pulley diameter specification)

Please confirm pulley diameter, offset and belt configuration before purchase, as RB engines use multiple pulley variations depending on accessories and model year.

Vehicle Compatibility

Suitable for selected Nissan RB applications including:

• Nissan Skyline R31 / R32 / R33 / R34 (V-belt converted setups)

• Nissan Stagea RB conversions

• Nissan Laurel / Cefiro RB engines

• Nissan Patrol RB conversions

• Holden VL Commodore RB30E / RB30ET

• Custom RB engine swaps and conversions

Condition

• Genuine used Nissan component

• Aluminium/steel construction (varies by model)

• Cosmetic wear, marks or oxidation consistent with age

• Sold exactly as pictured

Perfect For

• RB engine rebuilds

• V-belt accessory drive setups

• Engine conversions and swaps

• Restoration projects

• Replacement of damaged or missing pulley

• Workshop spare parts

What's Included

• 1 × Genuine Used Nissan RB V-Belt Water Pump Pulley

Only the item shown in the photographs is included.

Important Information

This is a used OEM engine accessory component.

Professional installation is recommended.

Ensure correct belt alignment, pulley offset and groove style match your existing setup before installation.

Need Help Choosing?

Not sure if this pulley suits your RB setup?

Contact the BoostDoc team with photos of your current pulley or engine configuration and we’ll confirm compatibility.

Search Terms

RB water pump pulley, RB V-belt pulley, RB25 pulley, RB30 pulley, RB26 pulley, Nissan RB accessory pulley, RB engine belt pulley, VL Commodore RB pulley, RB30E water pump pulley, Nissan OEM pulley, RB engine parts.

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