Spark Plug 4123, Autolite
12 left in stock
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Fits Sportster 1979-1985
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Thread: M14 x 1.25
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Thread length: 1/2 ”
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Wrench size: 13/16 ”
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Connection thread: M4
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Manuf. labelling: 4123, corresp. to OEM: 4R5
replaces OEM 32301-80 -
Gross weight: 60 g