LAND ROVER DISCOVERY 2 1998-2004 THERMOSTAT AND HOUSING NEW PART # PEM100990 LAND ROVER DISCOVERY 2 1999-2004 & DEFENDER TD4 / TD5 99-10 THERMOSTAT AND HOUSING NEW UK BRITPART BRAND PART # PEM100990 / PEL100500 Part No: PEM100990 Brand: PREMIUM BRITPART UK BRAND Description: Thermostat and Housing. This thermostat is set to open at 88 degrees. Recommended Quantity: 1 Dimensions: 0.1 m x 0.08 m x 0.16 m Weight: 0.304 kilo Supersedes: PEL100500 Model DEFENDER Td 4 2.4 2007 - 2010 Plastic Heart Like Housing in Cooling Hoses DEFENDER Td5 1999 - 2006 DISCOVERY 2 Td5 1998 - 2004 DISCOVERY 2 V8 1998 - 2004 The thermostat regulates your Land Rover's operating temperate by restricting the flow of coolant from the engine back to the radiator, making it a critical part for your vehicle. If you notice an issue with you Rover overheating, it may be time to replace your thermostat. It's important to switch out a bad thermostat at the first sign of failure, or risk suffering further, costly damage to other engine components.