STC1121 | Cylinder Head Inlet Valve - 3.5 Twin Carb V8 | 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
To check the stock of Genuine Parts before placing an order please use our Contact Us page
Land Rover Part Number: STC1121 - Cylinder Head Inlet Valve - 3.5 Twin Carb V8
STC1121 is a cylinder head inlet valve for 3.5 Twin Carb V8 engines. Fitted into the cylinder head of 3.5L V8 twin-carb petrol engines, this valve controls inlet airflow into each combustion chamber to allow correct filling of the cylinder during the intake stroke.
Compatibility
- Defender (1987-2006) - 3.5L V8 Twin Carb Petrol
- Discovery 1 - V8 Carb
- Range Rover Classic (to 1985) - 3.5 Twin Carb V8
- Series 3 Stage 1 V8 - 3.5 Twin Carb V8
Frequently Asked Questions
STC1121 seals the intake port and opens and closes to permit inlet airflow into the combustion chamber on 3.5L V8 twin-carb engines. Valves should be inspected during cylinder head service for signs of burning, pitting or bent stems that can reduce compression and affect engine performance.
| Model | Variant |
|---|---|
| Land Rover Defender | 1987 - 2006 - 3.5L V8 Twin Carb Petrol |
| Land Rover Discovery 1 | V8 Carb |
| Land Rover Range Rover Classic | to 1985 - 3.5 Twin Carb V8 |
| Land Rover Series 3 Stage 1 V8 | 3.5 Twin Carb V8 |
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 inlet valves during any cylinder head overhaul or if the engine shows poor compression, misfire, excessive smoke or a loss of power; replace valves that are bent, burnt, pitted or do not seat correctly. When in doubt, follow the service manual or consult a qualified technician.
- 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.