Description
Spark plug B6ES NGK
Fits Belcher Engineering’s V8 21 Stud Cylinder heads “GEM and Allard” and Belcher Engineering’s Ford Model A “GEM” Cylinder head.
Insulator height 55mm, Reach 0.75″, Flat seat, 14mm Thread dia., hex 13/16″, pre-gap size 0.28″, resistance 1 82.






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