Autolite AR3910X Black racing plugs | sku-163269358
No rating yet(0 ratings)Autolite AR3910X is an 8 Pack of genuine OEM racing Autolite Spark Plugs in Black, sku-163269358. Thread size is 14mm with a 1.25mm pitch, a gasket seat and a 19mm (3/4") reach. Hex size is 5/8" (16mm), and the terminal is solid. The cut-back ground electrode improves ignitability. A yttrium-enhanced alloy allows up to an 8% reduction in sidewire temperature. UPC: 639440898344.
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