Allstar Performance's spark plug index tool is a black plastic tool used to position the ground strap of a spark plug for best piston dome clearance and a more even burn. It works with 14mm flat or tapered seat spark plugs.Sold individually.Compatibility: Fits 14mm flat or tapered seat spark plugs.FAQWhat plugs does this tool work with?14mm flat or tapered seat spark plugs.What material is the tool made from?Black plastic.What does this tool do?It indexes the spark plug, positioning the ground strap for improved piston dome clearance.Is this sold individually or in a set?It is sold individually, one indexing tool per purchase.{"@context":"https://schema.org","@type":"FAQPage","mainEntity":[{"@type":"Question","name":"What plugs does this tool work with?","acceptedAnswer":{"@type":"Answer","text":"14mm flat or tapered seat spark plugs."}},{"@type":"Question","name":"What material is the tool made from?","acceptedAnswer":{"@type":"Answer","text":"Black plastic."}},{"@type":"Question","name":"What does this tool do?","acceptedAnswer":{"@type":"Answer","text":"It indexes the spark plug, positioning the ground strap for improved piston dome clearance."}},{"@type":"Question","name":"Is this sold individually or in a set?","acceptedAnswer":{"@type":"Answer","text":"It is sold individually, one indexing tool per purchase."}}]}
