Td5 Thermostats

Find replacement thermostats for Land Rover Td5 cooling systems, including Defender Td5, Discovery 2 Td5 and later Defender TDCI models using thermostat PEM100990. This page brings together the current thermostat options available from Twinwoods 4×4, from Genuine Land Rover parts to branded replacement options.

Td5 thermostat replacement options

The thermostat controls coolant flow through the engine and radiator, helping the engine warm up properly and hold a stable operating temperature. A weak, sticking or slow-acting thermostat can cause slow warm-up, poor heater performance, unstable temperature control or overheating.

Choose the thermostat option that suits the vehicle and the job. Genuine Land Rover is the original parts option, while branded replacement thermostats offer a practical choice for normal repair work. The product grid below shows the current thermostat options available.

Before replacing the thermostat, check the coolant condition, hose condition, cooling system bleeding and any signs of leaks or contamination. If you are not sure which option to choose, read our Td5 thermostat guide.