ERR4996 Fan Viscous Clutch – Discovery II / Range Rover P38

Keep your Rover’s cooling system operating at peak efficiency with this Fan Viscous Clutch (Part No. ERR4996). The viscous clutch regulates fan speed based on engine temperature, ensuring strong airflow when heat rises and reducing drag when cooling demand is low.

A failing clutch can cause overheating, excessive fan noise, poor fuel economy, or weak cooling at idle. This replacement restores proper temperature-controlled fan operation—critical on the V8-powered Discovery Series II and Range Rover P38.

Built to OEM specifications, it mounts directly to the factory fan and threads onto the water pump for fast, reliable installation.

Fits:

• Discovery Series II (1999–2002)

• Range Rover P38 4.0 (1995–2002)

• Range Rover P38 4.6 (1995–2002)

Install tip: A viscous fan spanner helps with removal. Always verify thread direction—P38 and D2 fans use a left-hand thread.*

Supersession Part Numbers

No supersessions found.

FAQ

What symptoms indicate a bad viscous fan clutch?
Overheating at idle, loud roaring fan noise, poor A/C performance, or temperature fluctuations.

Is this a direct thread-on replacement?
Yes — it threads directly onto the water pump hub using the factory fan.

Should I replace the fan blade too?
Inspect closely; cracked or brittle blades should always be replaced.

Part Number: ERR4996

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