{"product_id":"toolwiz-spark-plug-gap-tool-32-blade-black-feeler-gauge-fits-10-16mm-plugs-hardened-steel-precision","title":"Toolwiz Spark Plug Gap Tool — 32-Blade Black feeler gauge, fits 10–16mm plugs, hardened-steel precision","description":"\u003cp\u003e\u003cstrong\u003eToolwiz Spark Plug Gap Tool is a handheld gapper that safely and precisely reduces spark plug electrode gaps using a 32-blade steel feeler gauge and an adjustable compression knob.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis compact tool gives DIY mechanics and professional technicians a controlled way to set spark plug gaps on most common 10mm–16mm plugs. Built with a hardened steel feeler gauge and a sturdy black-finished body, it streamlines gap reduction tasks and helps you achieve repeatable results without bending electrodes by hand.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this tool make spark plug gap adjustment easier?\u003c\/h3\u003e\n\u003cp\u003eThe Toolwiz gapper holds the plug securely while a turning knob compresses the electrode to the target gap, avoiding direct bending that risks damage. The included 32-blade feeler gauge provides precise reference sizes so you can dial in the gap quickly.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSimple place-and-turn operation for controlled compression\u003c\/li\u003e\n\u003cli\u003eReduces gap only — prevents accidental over-expansion\u003c\/li\u003e\n\u003cli\u003e32-blade gauge covers 0.001\"–0.040\" (0.03–1.0mm) for fine increments\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich spark plugs will this Toolwiz gapper work with?\u003c\/h3\u003e\n\u003cp\u003eIt fits most standard spark plugs with 10mm, 12mm, 14mm, and 16mm thread diameters. It is not suitable for 18mm threads or plugs that require long- or short-reach tools, and it’s not intended to adjust preset-gap Iridium or Platinum plugs in most cases.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCompatible: standard 10mm–16mm thread spark plugs\u003c\/li\u003e\n\u003cli\u003eNot compatible: 18mm thread, long-reach, or short-reach plugs\u003c\/li\u003e\n\u003cli\u003eRecommended: use on non-preset-gap plugs only\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat accuracy can I expect when setting gaps with this kit?\u003c\/h3\u003e\n\u003cp\u003eThe hardened 65 manganese steel feeler gauge is dual-marked and polished for consistent thickness across blades, supporting repeatable gap settings. Because electrode metal can spring back slightly, the tool’s controlled compression plus a slightly smaller gauge blade will help you reach the intended value reliably.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGauge range: 0.001\"–0.040\" (0.03–1.0mm) in 32 blades\u003c\/li\u003e\n\u003cli\u003eMaterial: hardened, polished 65 manganese steel for durability\u003c\/li\u003e\n\u003cli\u003eTip: use a marginally smaller blade than target to offset spring-back\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I use the Toolwiz Spark Plug Gap Tool safely and effectively?\u003c\/h3\u003e\n\u003cp\u003eSeat the spark plug into the tool, select the appropriate feeler blade, then slowly turn the knob until the electrode compresses to the feeler thickness. Inspect the electrode visually and recheck with the gauge; remember this tool only reduces gaps, so take incremental adjustments.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStep 1: Insert plug and pick correct feeler blade\u003c\/li\u003e\n\u003cli\u003eStep 2: Turn knob slowly until electrode contacts the blade\u003c\/li\u003e\n\u003cli\u003eStep 3: Recheck gap and repeat if necessary; do not force\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The Toolwiz Spark Plug Gap Tool and 32-blade feeler gauge suit home mechanics, small engine technicians, and anyone who services spark plugs and needs a compact, repeatable way to reduce electrode gaps. It’s ideal for routine tune-ups, classic vehicles, motorcycles, lawn equipment, and other machines using standard 10mm–16mm spark plugs where careful gap control matters.\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: Can this tool enlarge a spark plug gap?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. The Toolwiz gap tool only reduces gaps by compressing the electrode; it cannot increase a gap.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the kit include a feeler gauge and what sizes are covered?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It includes a 32-blade steel feeler gauge covering 0.001\"–0.040\" (0.03–1.0mm).\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Toolwiz","offers":[{"title":"Default Title","offer_id":48087057891486,"sku":"B0BFJ27MBR","price":30.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/toolwiz-front-view.jpg?v=1785915744","url":"https:\/\/northtrailauto.ca\/products\/toolwiz-spark-plug-gap-tool-32-blade-black-feeler-gauge-fits-10-16mm-plugs-hardened-steel-precision","provider":"North Trail Auto","version":"1.0","type":"link"}