XR840091 Heater Control Valve Assembly - Compatible with Jaguar S-Type, Lincoln LS, Fo-rd Thunderbird 2002-2008 - 3 Port Type XR8-40091 Review

Replacement OEM Part Number: 1147412175, 65326015101, R3020-138589, XR840091, 6860143, 2R8Z18495AA, 2R8H18495AB, 2R8H18495AC. Fits for 2002-2008 Jaguar S-Type (from VIN# M45255); 2003-2006 Lincoln LS; 2004-2005 Fo-rd Thunderbird. The heater control valve (or hot water valve) opens and closes to allow warm coolant to flow through the heater core. Air passing through the heater core creates hot air in your vents. It sits between the water pump heater hose and the heater core. The heater control valve is found in front of the firewall of the vehicle. By opening the heater control valve, you can allow additional coolant to flow through your heater core. The core acts as an additional mini-radiator to keep the coolant system from overheating for a longer period. Those few extra miles could make a big difference when traveling away from home or on interstate highways where you could be stranded. Common Symptoms of a Bad or Failing Heater Control Valve: 1. Heater doesn’t work; 2. Leaking coolant; 3. Erratic heater behavior.