ETC4765 - Thermostat – 88C

- €9,10

€9,10

€9,10 - €9,10

€9,10

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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 - 88°C for the cooling system of V8 petrol engines.

The thermostat regulates coolant flow between the engine block and the radiator, allowing the engine to reach operating temperature quickly by blocking coolant circulation through the radiator when cold. Once coolant temperature reaches 88°C, the thermostat opens progressively to allow circulation through the radiator and maintain a stable working temperature. A failed thermostat - whether stuck open or closed - disrupts the thermal management of the engine, causing either overheating or failure to reach correct operating temperature.

Vehicle Model Land Rover Defender up to 2016
Land Rover Discovery 1 1989-1998 (L318)
Range Rover Classic up to 1994
Land Rover Series 2 and 3

Fitment Notes SERIES III — 3.5L V8 petrol (88°C thermostat)
DEFENDER 1987-2006 — 4.0L V8 EFI petrol, inlet manifold
DISCOVERY 1 1989-1998 — 3.5L V8 Twin Carb and 3.9/4.0L V8 EFI petrol
RANGE ROVER CLASSIC 1986-1994 — V8 Twin Carb and V8 EFI petrol, inlet manifold (1986-1991 to VIN HA610293; 1992-1994 from VIN JA610294)

Alternative Codes

ETC4765ETC4765ES

In stock 21 units

19 · 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 ETC4765 88°C thermostat do on a Land Rover V8?

The ETC4765 thermostat controls coolant flow in V8 petrol engines. When cold, it blocks flow through the radiator, helping the engine reach working temperature quickly. Once coolant hits 88°C, it opens progressively to maintain stable operating temperature.

Why does a V8 Land Rover thermostat fail and what are the warning signs?

Thermostats typically fail stuck open or stuck closed. Stuck open: the engine never reaches correct temperature and heater output is weak. Stuck closed: the engine overheats rapidly. On Defender, Discovery 1, and Range Rover Classic V8 engines, one of these two patterns is usually the first indicator.

How do I confirm this thermostat fits my V8 Land Rover?

ETC4765 fits Defender 1987-2006 V8 EFI, Discovery 1 1989-1998 V8 petrol, and Range Rover Classic V8 petrol. For Range Rover Classic, check your VIN: to HA610293 (1986-1991) and from JA610294 (1992-1994). Also fits Series III petrol engines.