ERR1201 | Left-Hand Inlet Rocker Arm Assembly - 200Tdi | Defender, 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
Land Rover Part Number: ERR1201 - Left-Hand Inlet Valve Rocker Arm Assembly
ERR1201 is a left-hand inlet valve rocker arm and bush assembly fitted to the rockershaft of 200Tdi cylinder heads. It provides the contact and bearing surface for the inlet valve and transfers camshaft motion, via the rockershaft, to operate the inlet valve. The fitted bush forms the rotating bearing surface between the rocker and rockershaft, maintaining alignment and reducing wear; any wear to the bush or the rocker contact face can alter valve lift and timing and should be corrected by replacement. This assembly is used on Land Rover 200Tdi engines fitted to Defender, Discovery 1 and Range Rover Classic models.
Use the compatibility data below to confirm fitment against your V.I.N.
Compatibility
- Defender (1987-2006) - 200Tdi
- Discovery 1 - 200Tdi
- Range Rover Classic (1992-1994) - 200Tdi
Frequently Asked Questions
The ERR1201 rocker arm assembly transmits camshaft motion, via the rockershaft, to open the inlet valve on 200Tdi cylinder heads. The pressed-in bush provides the rotating bearing surface between the rocker and rockershaft, maintaining alignment and reducing wear; when the bush or rocker contact face is worn it can change inlet valve lift and timing, requiring replacement.
| Model | Variant |
|---|---|
| Land Rover Defender (1987-2006) | Rockershaft - 2.5L I4 200 TDi L/R, 5 Speed Manual Transmission, Less Catalyst |
| Land Rover Range Rover Classic (1992-1994) | Rockershaft - 2.5L 200 Tdi, 5 Speed Manual Transmission, Less Catalyst (From JA610294) |
| Land Rover Discovery 1 | 200Tdi |
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.
Inspect the rocker arm assembly during routine engine services and replace it if the bush or rocker contact face shows visible wear, scoring or excessive play, as these defects will affect valve lift and timing.
- C8 products are usually supplied by Britpart.
- L8 products are genuine Land Rover parts.
All products and accessories available on LRDirect.com come with a 2-year warranty.