ERR3767 Water Pump Fan Pulley Tensioner – Defender/Disco I/RRC

Keep your belt-driven cooling system functioning properly with this Water Pump Fan Pulley Tensioner (Part No. ERR3767). This tensioner maintains correct belt tension for the mechanical fan and water pump drive—essential for preventing belt slip, overheating, and reduced cooling efficiency on Rover V8 engines.

Manufactured to OEM specifications, it features a durable bearing assembly and correct pulley alignment for long-lasting reliability. A worn or noisy tensioner can lead to belt squeal, charging issues, and decreased cooling performance, making this a key maintenance item.

Fits:

• Range Rover Classic (V8 Models)

• Defender V8

• Discovery I (1994–1999, V8)

Install tip: Inspect the fan belt and idler pulleys during installation. Replace any worn components to ensure proper long-term operation.*

Supersession Part Numbers

No supersessions found.

FAQ

Is this for the mechanical fan belt system?
Yes — ERR3767 is the pulley tensioner used on V8 mechanical fan and water pump belt setups.

Does this fit both early and late RRC models?
Yes — it fits V8 Range Rover Classics up to 1995.

Should I replace the belt at the same time?
Yes — pairing a new belt with a new tensioner ensures optimal performance.

Part Number: ERR3767

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