2011 f150 eco...which spark plug?
#1
2011 f150 eco...which spark plug?
We have a bone stock 2011 F150 Ecoboost. The truck has a lift and 35" tires but performance wise is stock. We just had the TSB that gave us the new intercooler, cat, and tune and figured with 58k miles of running too rich it might be good to put some fresh plugs in it.
What is the stock spark plug part #? I am finding some sites saying motorcraft sp-528. Does NGK make an equivalent? All my research is giving me results for different plugs for people who are tuning and running more boost (thus changing heat range). I just want a stock style equivalent.
What is the stock spark plug part #? I am finding some sites saying motorcraft sp-528. Does NGK make an equivalent? All my research is giving me results for different plugs for people who are tuning and running more boost (thus changing heat range). I just want a stock style equivalent.
#2
The recommended plug is SP-528. This is the current production plug and it supersedes the old SP-512. It's made by NGK for Motorcraft, install them DRY. They come pregapped but you need to check the gap, should be .035.
The only other plug in the Rock Auto catalog for the EB is a Denso Iridium at twice the price.
The only other plug in the Rock Auto catalog for the EB is a Denso Iridium at twice the price.
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