What type of spark plugs should I get?
04 Ford Mustang V6 3.8. I want to buy the same it had when it left the dealership. I know that Motorcraft platinum spark plugs are recommended. However, I got confused with all those codes names. Can someone give me the full name of them?
A parts store, ( not a self-serve box store ), should surely have the Original equipment number
Motorcraft Mustang Spark Plugs (98-04) 3.8
https://lmr.com/item/AWSF42CK/1998-04-Mustang-Motorcraft-Spark-Plugs
Fords tell you the part on the underhood sticker, (Cafe regulation sticker)
Lets say you had a simple cast iron V8, down in the corner of the sticker you may see: spark plug type, and spark plug Gap.
AWSF-42, (or 42C, or 42P or even 42PP) if that was seen or just the basic, you could make a choice
You could get what came with it? Exactly?
Or upgrade, or down grade based on originality, cost, or your own circumstances.
Then you could spend full price for the longest lasting?
or solve your runability issue with copper plugs, the would be better than the first number, but not extra expensive.
Your tech can use that possibility to get your engine to exhibit,
without running your bill up, and recheck them as a oil, fuel, or temp problem cleared up or worsening.
Other plugs end up in a return parts bag so often, I would not recommend other brands.
A phone call to your Ford parts counter to ask anything like this, is always welcome.
Your model year, engine or calibration is simplified with the Cafe sticker info from you.
Your maintenance interval would need thought and correction after you made the part number change of choice.
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