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sp486 plugs vs sp500 plugs


stamina

Active Member
Joined
Nov 20, 2021
Messages
227
Reaction score
34
Points
28
Location
Wilmington, NC
Vehicle Year
1990
Make / Model
Ford Ranger
Engine Type
4.0 V6
Transmission
Manual
2WD / 4WD
4WD
Total Lift
4” suspension
Tire Size
265/75/r16
My credo
built her in a storage unit
i have a 1999 ohv 4.0 but it will be going to a 1990 ranger with all 1990-94ish wiring, which of these plugs should i use and why and what are the differences? apparently sp500 is meant for the later ohv and sp486 is for the older ones the reach of them is both the same, .679 i believe.
 

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