LR005631G - Thermostat assembly

- €138,10

€138,10

€138,10 - €138,10

€138,10

OEM: Made by an Original Equipment Manufacturer. This part is made by an original equipment manufacturer or under their license, ensuring compatibility and quality.

Brand HEPU

Thermostat assembly

Vehicle Model Land Rover Discovery 3 2005-2009 (L319)
Land Rover Discovery 4 2010-2016 (L319)
Range Rover Sport 2005-2013 (L320)
Range Rover Sport 2014-2022 (L494)
Range Rover Sport 2023+ (L461)

Fitment Notes DISCOVERY 3 — 4.4L AJ V8 Petrol
RANGE ROVER SPORT L320 — 4.4L AJ V8 Petrol

Alternative Codes

LR005631LR005631G4646010

In stock 1 unit

0 · Gouda 1 · Drachten

Express delivery available

2 more on the way · ETA 01-10-2026

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.

2 more units on the way — expected 01-10-2026. Orders beyond current stock are reserved from incoming stock and shipped as soon as they arrive.

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 is a thermostat assembly and how is it different from a plain thermostat?

It's the thermostat supplied complete with its housing rather than as a loose element. On the 4.4 litre AJ V8 petrol engine the unit is normally replaced as one piece. Its job is to control coolant flow so the engine warms up quickly and then holds temperature.

Which engine does this thermostat assembly fit?

The 4.4 litre AJ V8 petrol engine, as fitted to the Discovery 3 and the Range Rover Sport L320. Diesel versions of those vehicles usually use a different thermostat, so confirm your engine before ordering rather than going by model alone.

What are the symptoms of a failed thermostat on the 4.4 V8?

Slow warm-up, a heater that never gets properly hot and higher fuel use point to one stuck open. A temperature gauge that climbs fast, or coolant boiling, points to one stuck closed. Both are worth acting on quickly, because overheating damage on a V8 is expensive.

What should I do when fitting it?

Drain the coolant properly and check the mating face for corrosion before fitting. Renew any seal or O-ring supplied with the unit rather than reusing the old one, then refill with fresh coolant of the correct type and bleed the system fully.