ERR3490 - Thermostat Housing Gasket – 300TDi

- €1,40

€1,40

€1,40 - €1,40

€1,40

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Aftermarket: Quality alternative. This is a quality alternative, designed to fit and function like the original part, often at a more competitive price.

Thermostat Housing Gasket Seals the thermostat housing to the cylinder head within the cooling system of the 300 TDi 2.5L turbo diesel engine.

It forms a coolant-tight joint at the housing face where coolant leaves the cylinder head, preventing leakage and ensuring the thermostat regulates flow to the radiator correctly.

Vehicle Model Land Rover Defender up to 2016
Land Rover Discovery 1 1989-1998 (L318)
Range Rover Classic up to 1994

Fitment Notes Defender 1994-2006 — 2.5L 300TDi Diesel Turbo
Discovery 1 1994-1998 — 2.5L 300TDi (from VIN MA081992)
Range Rover Classic 1992-1994 — 2.5L 300TDi (from VIN JA610294)

Alternative Codes

ERR3490ERR3490ES

In stock 98 units

96 · Gouda 2 · Drachten

Express delivery available

When will my order arrive?

Order before 15:00 (Mon–Fri): same-day dispatch for in-stock items.
UPS Express (order before 14:00): dispatched today, delivered tomorrow where available.
Netherlands / Belgium / Germany: 2–4 working days.
Other EU countries + UK: 4–8 working days.
Outside EU/UK: delivery times vary — contact us for an estimate.

Items may ship from multiple warehouses at no extra cost.

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 does the thermostat housing gasket do on a 300 TDi?

The thermostat housing gasket seals the thermostat housing to the cylinder head on the 300 TDi 2.5L turbo diesel. It forms a coolant-tight joint where coolant leaves the head, so the thermostat can regulate flow to the radiator without leaking.

Which vehicles use this thermostat housing gasket?

This gasket fits the 300 TDi 2.5L turbo diesel in the Defender 1994 to 2006, Discovery 1 (from VIN MA081992) and Range Rover Classic (from VIN JA610294). It seals the thermostat housing on the cooling system.

When should this gasket be replaced?

Replace the thermostat housing gasket whenever the housing or thermostat is removed on the 300 TDi. An old gasket typically weeps coolant at the housing face, and a failed seal can let air in and cause overheating, so renew it on reassembly.