Age old spark plug question

[Bobmbx]

Its time for new plugs.

2006 V6 w/186k on the odo.

Had a misfire (0301), checked the plug gap and its just a bit off (somewhere north of .075 instead of .052-.056).

Any suggestions on what to toss in as a replacement?

 

[Boomyal]

My experience is that modern cars run best and most reliably with plugs that come with it from the factory.

 

[swshawaii]

Ditto. Stick with the OEM plugs that have proven to perform well. It's been said MANY times here, especially the 4.0L V6.

 

[Bobmbx]

MotorCraft it is!

 

[swshawaii]

MotorCraft it is!

Surprised Motorcraft doesn't offer a FineWire Platinum upgrade to the SP-412.

They've had the SP-500 FineWire for years designed specifically for earlier 4.0L SOHC's.

The Autolite XP Iridium plugs appear very similar to the FineWire Platinum design.