STC4735 | Expansion Tank Pressure Cap - 2.25 & 2.5 Petrol and Diesel | Defender, Series
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: STC4735 - Expansion Tank Pressure Cap - 4-Cylinder Pre DT
STC4735 is an Expansion Tank Pressure Cap - 4-Cylinder Pre DT. Fitted to naturally aspirated 4-cylinder petrol and diesel engines (2.25 and 2.5 litre) in Series models and Defender 90/110 vehicles, this cap seals the coolant expansion tank and maintains system pressure to help prevent coolant loss and ensure the cooling system operates correctly.
Compatibility
- Defender (1987-2006) - 2.25 Petrol, 2.25 Diesel, 2.5 Petrol, 2.5 Diesel (Naturally Aspirated) - Expansion Tank (except TDi and Td5)
- Series (From 1968) - 4 Cylinder
Frequently Asked Questions
STC4735 seals the vehicle's coolant expansion tank and maintains system pressure on naturally aspirated 4-cylinder petrol and diesel engines. A failed cap can allow coolant loss or prevent the cooling system from holding pressure, which may lead to overheating; inspect the cap for leaks, a damaged seal or corrosion and replace if any fault is found.
| Model | Variant |
|---|---|
| Land Rover Defender (1987-2006) (L315) | 2.25 Petrol; 2.25 Diesel; 2.5 Petrol; 2.5 Diesel (Naturally Aspirated) - Expansion Tank (except TDi and Td5) |
| Land Rover Series (From 1968) | 4 Cylinder |
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 cap whenever the cooling system is serviced and replace it if the seal is damaged, the cap will not hold pressure, or there is visible corrosion. If in doubt, consult the vehicle handbook or a qualified technician for guidance.
- 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.