I want to replace the spark plugs on my 2003 Sport Trac XLT 4X4. I am not looking for high performance, just want the best, most efficient plug for normal" driving. Price not the issue. I am thinking of OEM Motorcraft but Bosch, etc. is an option. Any recommendations? Thanks.

VABruin

 

Stick with the Motorcraft. You won't get any more performance out of any other plug. In fact, most others will give you trouble. Fords just like the Motorcraft best.

 

Yeah, the Bosch will give you trouble. Stick with Motorcraft.

 

Thank you. I appreciate the reply and will take your advice.

 

Consider doing the wires as well.

 

Another vote for Motorcraft

 

I tried Champion and was sorry. After a couple years - <20k miles motor started missing. Never suspected plugs since "I had just replaced them" and ended up having dealer tell me. It was a costly mistake and embarassing.