Skip to content
ERR4959 - Cooling Fan Assembly – Viscous by AllmakesCooling or Heating Part Land Rover Range Rover Discovery, Range Rover

ERR4959 - Cooling Fan Assembly – Viscous

- €187,70
€187,70
€187,70 - €187,70
€187,70
Aftermarket Part
Aftermarket: Quality alternative. This is a quality alternative, designed to fit and function like the original part, often at a more competitive price.
Viscous Cooling Fan Assembly for the 4.0L and 4.6L V8 petrol engines, part of the engine cooling system.

The assembly combines the engine-driven cooling fan with a viscous (fluid) coupling that varies fan speed with temperature. At low temperatures the coupling slips to reduce drag and noise; as the engine warms the coupling engages and the fan draws additional air through the radiator. It mounts on the water pump drive behind the radiator.
Vehicle Model Land Rover Discovery 2 1998-2004 (L318)
Range Rover Classic 1994-2001 (P38)
Fitment Notes DISCOVERY 2 1998-2004 — V8 Petrol (4.0L EFI) only
RANGE ROVER P38 1994-2001 — 4.0 V8 Petrol and 4.6 V8 Petrol. Viscous fan drive
Alternative Codes
ERR4959

Available to order 2–3 weeks

Not currently in stock. Order now — typically ships within 2–3 weeks.

Need it faster? Contact us about express import (2–5 business days).

When will my order arrive?

This item is ordered from our supplier on request. Typical lead time is 2–3 weeks from order confirmation.

  • Netherlands / Belgium / Germany: 2–4 working days after dispatch.
  • Other EU countries + UK: 4–8 working days after dispatch.
  • Outside EU/UK: contact us for an estimate.

Need it faster? Express import available in 2–5 business days — contact us before ordering.

Job kits containing this part

This part is included in 0 job kit(s) below. Pick the kit that matches your vehicle and job, then add what you need.

Frequently asked questions

What is the ERR4959 viscous cooling fan assembly used for?
The ERR4959 viscous cooling fan assembly draws air through the radiator on V8 petrol engines. It combines the engine-driven fan with a fluid (viscous) coupling and mounts on the water pump drive behind the radiator, part of the engine cooling system.
How does the viscous fan coupling work?
The viscous coupling varies fan speed with temperature. When the engine is cold the coupling slips, cutting drag and noise; as it warms the coupling engages and the fan pulls more air through the radiator. This keeps cooling matched to demand.
What are the signs the viscous fan needs replacing?
Typical signs are engine overheating in slow traffic or at idle, a constant roaring fan noise, or a fan that spins freely by hand when the engine is hot. A failed coupling usually can't drive enough airflow to cool the V8.
Which models does this viscous fan fit?
This viscous fan fits the Discovery 2 with the 4.0L V8 EFI petrol engine and the Range Rover P38 (1994-2001) with 4.0 and 4.6 V8 petrol engines using the viscous fan drive. It isn't used on the diesel models.