ERR3443 | Viscous Coupling - M30 x1.5 - V8 | Defender, Discovery 1, Range Rover Classic
To check the stock of Genuine Parts before placing an order please use our Contact Us page
To check the stock of Genuine Parts before placing an order please use our Contact Us page
To check the stock of Genuine Parts before placing an order please use our Contact Us page
To check the stock of Genuine Parts before placing an order please use our Contact Us page
To check the stock of Genuine Parts before placing an order please use our Contact Us page
To check the stock of Genuine Parts before placing an order please use our Contact Us page
Land Rover Part Number: ERR3443 - Viscous Coupling - M30 x 1.5 Thread, 35mm Nut - V8
ERR3443 is a viscous coupling unit fitted to the cooling fan drive on 3.9/4.0L Rover V8 engines. It mounts to an M30 x 1.5 threaded hub and is supplied with the 35mm nut for that thread. Located within the fan drive assembly, the coupling transmits torque through a shear-controlled viscous medium so the fan runs at lower speed under light load and increases speed as thermal demand rises.
Use the compatibility data below to confirm fitment against your V.I.N.
Compatibility
- Defender (1987-2006) - 3.9/4.0L Rover V8
- Discovery 1 - 3.9/4.0L Rover V8
- Range Rover Classic (1992-1994) - V8 EFI (From JA610294)
Frequently Asked Questions
ERR3443 provides viscous drive between the engine and the cooling fan, controlling rotational slip so fan speed matches cooling demand. The unit transmits torque through a shear-controlled viscous medium and is a replaceable component of the fan drive on 3.9/4.0L Rover V8 applications; it is supplied with the 35mm nut for the M30 x 1.5 thread.
| Model | Variant |
|---|---|
| Land Rover Defender (1987-2006) | 3.9/4.0L Rover V8 |
| Land Rover Discovery 1 | 3.9/4.0L Rover V8 |
| Land Rover Range Rover Classic (1992-1994) | V8 EFI (From JA610294) |
If you are unsure of compatibility with your vehicle, you can also confirm by checking against your V.I.N. Simply reach out to us with your V.I.N and desired part number via our Contact page or use our Finding Part Numbers page.
- C8 products are usually supplied by Britpart.
- L8 products are genuine Land Rover parts.
- Z8 products are normally supplied by Allmakes.
All products and accessories available on LRDirect.com come with a 2-year warranty.