{"product_id":"gearoll-spark-plug-gap-tool-with-32-blade-steel-feeler","title":"GEAROLL Spark Plug Gap Tool with 32 Blade Steel Feeler","description":"\u003cp\u003e\u003cstrong\u003eGEAROLL Spark Plug Gap Tool is a compact, red hand tool with a 32-blade steel feeler gauge designed to set accurate gaps on most 10mm, 12mm, 14mm and 16mm threaded spark plugs quickly and repeatably.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf you service small engines, motorcycles, ATVs, lawn equipment or cars with standard-length spark plugs, this kit gives you a dedicated way to measure and adjust the electrode gap without relying on bent wires or guessing. The tool pairs a threaded clamping body with a precision 65 manganese steel feeler gauge (0.001\"–0.040\" \/ 0.03mm–1.0mm) and includes gloves so you can work cleanly. It's made for non-preset-gap spark plugs and standard thread sizes, not long- or short-reach or 18mm-thread plugs.\u003c\/p\u003e\n\n\u003ch3\u003eHow do I use the GEAROLL gap tool to set a spark plug gap?\u003c\/h3\u003e\n\u003cp\u003eUsing the tool is straightforward: choose the correct feeler blade for your target gap, clamp the plug, turn the knob to bend the side electrode, then re-check with the blade until the feeler slides with a slight drag. Small reversals prevent over-bending and protect the electrode finish.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSelect the blade matching the desired gap thickness (0.001\"–0.040\").\u003c\/li\u003e\n  \u003cli\u003eInsert the spark plug into the tool and tighten enough to hold it upright.\u003c\/li\u003e\n  \u003cli\u003eTurn the adjustment knob to open the gap; test with the feeler gauge and back off slightly when finished.\u003c\/li\u003e\n  \u003cli\u003eRotate knob backward slightly to disengage to avoid coating wear, then remove the plug.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat spark plugs and engines are compatible with this tool?\u003c\/h3\u003e\n\u003cp\u003eThis gapping tool fits most standard spark plugs with 10mm, 12mm, 14mm and 16mm threads—common on cars, motorcycles, scooters, generators and garden machines. It does not accommodate 18mm threads or long\/short reach specialty plugs.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible: standard-length, non-preset gap 10\/12\/14\/16mm plug threads.\u003c\/li\u003e\n  \u003cli\u003eNot compatible: 18mm threaded plugs or long-reach\/short-reach designs.\u003c\/li\u003e\n  \u003cli\u003eIdeal for small engines, powersports, and many passenger vehicles with standard plugs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy choose a 32-blade feeler gauge and 65 manganese steel construction?\u003c\/h3\u003e\n\u003cp\u003eThe included 32-blade feeler set covers a wide measurement range so you can match factory gap specs precisely. The 65 manganese steel blades are hardened and polished to resist wear and maintain accurate thicknesses over repeated use.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRange: 0.001\"–0.040\" (0.03mm–1.0mm) for precise gap matching.\u003c\/li\u003e\n  \u003cli\u003eMaterial: hardened 65 manganese steel for durability and stable thickness.\u003c\/li\u003e\n  \u003cli\u003ePolished blades reduce burrs and give consistent feel against electrodes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat care and adjustment tips help avoid damage while gapping?\u003c\/h3\u003e\n\u003cp\u003eTo protect the electrode coating and ensure accurate measurement, never force the tool or rotate the screw so the clamp and electrode scrape together. Use a slight backward turn before checking the gap to prevent spring-back errors and always verify with the feeler blade.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAlways back the knob slightly before measuring to offset electrode rebound.\u003c\/li\u003e\n  \u003cli\u003eAvoid direct scraping between clamp surfaces and plug coating to preserve performance.\u003c\/li\u003e\n  \u003cli\u003eRepeat small adjustments rather than one large bend for better precision.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eKit contents: 1 x GEAROLL Spark Plug Gap Tool (red), 1 x 32-blade feeler gauge set, and 1 x pair of gloves—ready to use on the bench or in the field.\u003c\/p\u003e\n\n\u003cp\u003eWho is this for? The GEAROLL Spark Plug Gap Tool is aimed at DIY mechanics, hobbyists, powersports riders, small-engine technicians and anyone who wants a reliable, portable way to set spark plug gaps to factory or tuned specifications. If you work on vehicles with standard threaded plugs and want a repeatable, accurate method without specialized shop equipment, this compact kit is a practical addition to your toolbox.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this tool fit 18mm spark plugs?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. The GEAROLL tool fits 10mm, 12mm, 14mm and 16mm threaded standard plugs only.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What gap sizes can the feeler gauge measure?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The included 32-blade feeler gauge measures from 0.001\" to 0.040\" (0.03mm–1.0mm).\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"GEAROLL","offers":[{"title":"Default Title","offer_id":48087125819550,"sku":"B0FWBVKJJP","price":30.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/gearoll-front-tool-and-gauge.jpg?v=1785917290","url":"https:\/\/northtrailauto.ca\/products\/gearoll-spark-plug-gap-tool-with-32-blade-steel-feeler","provider":"North Trail Auto","version":"1.0","type":"link"}