2001-2006 Explorer Sport-trac/ranger V6 4.0 Metal Thermostat Housing/Two Sensor Holes

Used this to replace leaking 160K mile leaking plastic factory unit on a 2003 4.0 sohc Ranger. A lot of thought went into its design. The redundant paper gaskets with factory-like seals ensure a leak-proof installation. Use permatex hi-tack to keep everything in place as it is tricky to install under the intake manifold on this vehicle. Good for two weeks now. Should last the life of the engine. I reused a two-year old thermostat, and the o-rings for the factory sensors worked perfectly. Coat them with silicon grease prior to installation to prevent damage to them. The driver side one is best installed outside the vehicle, and plugged in prior to bolting it down while you can still tip the unit slightly. As others have said, this should have been the design Ford used originally. Great product!

This part was a direct bolt on and cast perfectly to accept the temperature senders and the heater hose. It came with understandable directions. It is a major improvement over a plastic part that is notorious for failing.

I am very pleased with the performance of this housing so far. If you have the plastic thermostat housing you may want to consider going to aluminum.

Definitely what should have been on from the factory!

99 ford explorer sport 4.0

This piece is exactly what ford should have installed in the first place. Direct bolt on, and have had no problems

FANTASTIC