What is your question?
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What is your question?
how much would it cost to replace the engine in a Ford F-150, 2003, 5.4. Also, is it possible to know if the original engine has been changed out. if so, how

2 Replies
In order to check the engine, you have to check the serial numbers to be absolutely sure. A new or good rebuilt engine is about $5000-6000 installed depending on how many other parts you want to replace like the radiator, the hoses, belts etc,.