Common Ford 4.0 SOHC Coolant Leak Fix

This is very similar for most of the 4.0 Ford V6 motors. The thermostat housing is a 3 piece plastic unit (Plastic, stupid!) that is glued together. The glue eventually fails, and youll start leaking coolant slowly or rapidly. I noticed some smoke coming out from under the hood one day, saw some coolant puddled on the top of the engine, and then a stream running down and hitting the manifold. I suggest ordering this part on RockAuto.com, you can choose 2 day shipping and still get it way cheaper than a parts store.


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