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Spark Plugs

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  • Thread Reach (in) - 1.113 Inch

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Motorcraft Platinum Spark Plug - SP546X
Part #:
SP546X
Line:
MOT
2 Year LIMITED WARRANTY
Seat:   Tapered
Thread Size:   M16
Heat Range:   340

Motorcraft Platinum Spark Plug - SP547X
Part #:
SP547X
Line:
MOT
2 Year LIMITED WARRANTY
Seat:   Tapered
Thread Size:   M16
Heat Range:   370