Restore damaged spark plug threads with this repair kit that includes a tapered reamer and stainless steel inserts.
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M14-1.25 thread size
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Tapered reamer replaces the need for a drill bit
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Restore threads to the original sizing
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Includes: (1) 4241 HSS Tapered reamer, (3) 503 Stainless steel inserts - 5/16 in., 7/16 in., and 5/8 in. lengths, and (1) Install/punch tool