4.6 Northstar. It is located on the rear of engine(driver side) in front. It is 1n the the water pump housing cover. Remove airbox and intake tube and bottom radiator hose. 2 bolts(believe 10mm) on thermo housing. These systems are a lil finiky about air pockets....so fill slowly and let run at idle until operating temp and let cool and chk level.....fill as needed and repeat if needed.
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Related Questions
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Follow the upper rad hose from the rad to the engine and there you will find the thermostat in a housing. When replacing it make sure the spring on the thermostat goes toward the engine.
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