{"product_id":"ngk-spark-plug-mar9a-j","title":"NGK SPARK PLUG - MAR9A-J","description":"\u003ch2 data-end=\"181\" data-start=\"135\"\u003eNGK MAR9A-J Spark Plug – 6869\u003c\/h2\u003e\n\u003cp\u003e\u003cbr\u003eThe NGK MAR9A-J is a specialized, high-performance spark plug engineered specifically for high-revving, high-compression engines. Unlike standard plugs, it features a dual-ground (multi-ground) electrode design. This configuration improves ignition reliability and ensures a consistent spark even as the electrodes wear over time, extending the service life in demanding conditions. Built with a 98% pure copper core for superior heat dissipation and a trivalent metal plating to prevent seizing, the MAR9A-J is the go-to OEM replacement for riders who refuse to compromise on their machine's ignition timing and power delivery.\u003c\/p\u003e\n\u003ch4 data-start=\"562\" data-end=\"579\"\u003eFeatures:\u003c\/h4\u003e\n\u003cul data-start=\"580\" data-end=\"887\"\u003e\n\u003cli data-start=\"580\" data-end=\"630\"\u003e\n\u003cp data-start=\"582\" data-end=\"630\"\u003eOEM-recommended \u003cstrong data-start=\"598\" data-end=\"628\"\u003eNGK copper-core spark plug\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"631\" data-end=\"673\"\u003e\n\u003cp data-start=\"633\" data-end=\"673\"\u003eProvides consistent, reliable ignition for high compression engines\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"674\" data-end=\"735\"\u003e\n\u003cp data-start=\"676\" data-end=\"735\"\u003eStable performance in both low-speed and high-load riding\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"736\" data-end=\"776\"\u003e\n\u003cp data-start=\"738\" data-end=\"776\"\u003eResists fouling in technical terrain at lower speeds\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"777\" data-end=\"813\"\u003e\n\u003cp data-start=\"779\" data-end=\"813\"\u003eFactory-set \u003cstrong data-start=\"791\" data-end=\"811\"\u003e0.8 mm spark gap  \u003cspan style=\"text-decoration: underline;\"\u003e**See Tech Note Below\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"814\" data-end=\"835\"\u003e\n\u003cp data-start=\"816\" data-end=\"835\"\u003eHeat range: \u003cstrong data-start=\"828\" data-end=\"833\"\u003e9\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"836\" data-end=\"887\"\u003e\n\u003cp data-start=\"838\" data-end=\"887\"\u003eBuilt to NGK’s industry-leading quality standards\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003eThis plug is a \"Solid Terminal\" type, meaning the top nut does not unscrew. This is standard for the specialized ignition coils used on Ducati and modern European platforms. Always check your service manual for the specific torque spec, typically \u003cb data-path-to-node=\"9,0\" data-index-in-node=\"262\"\u003e7.2–8.7 lb-ft\u003c\/b\u003e for aluminum cylinder heads.\u003c\/p\u003e\n\u003ch3 data-path-to-node=\"2\"\u003e\u003cb data-path-to-node=\"2\" data-index-in-node=\"0\"\u003eDo Not Attempt to Gap This Plug\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp data-path-to-node=\"3\"\u003e\u003cspan class=\"citation-209 entailed\" role=\"button\" tabindex=\"0\"\u003eUnlike standard single-electrode plugs where you can bend the ground strap to adjust the clearance, multi-ground plugs like the MAR9A-J are \u003c\/span\u003e\u003cb data-path-to-node=\"3\" data-index-in-node=\"140\"\u003e\u003cspan class=\"citation-209 entailed\" role=\"button\" tabindex=\"0\"\u003enot adjustable\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-209 entailed citation-end-209\" role=\"button\" tabindex=\"0\"\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"4\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"4,0,0\"\u003e\u003cb data-path-to-node=\"4,0,0\" data-index-in-node=\"0\"\u003eFixed Geometry:\u003c\/b\u003e The dual ground electrodes are positioned to provide a specific spark path. Attempting to \"gap\" them with a traditional tool can easily tweak the electrodes off-center or crack the insulator nose.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"4,1,0\"\u003e\u003cb data-path-to-node=\"4,1,0\" data-index-in-node=\"0\"\u003eOut of the Box:\u003c\/b\u003e If the gap is not within the \u003cb data-path-to-node=\"4,1,0\" data-index-in-node=\"45\"\u003e0.7mm – 0.8mm\u003c\/b\u003e range due to shipping damage or a dropped plug, NGK recommends replacing the plug rather than trying to bend the electrodes back into spec.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cblockquote data-path-to-node=\"5\"\u003e\n\u003cp data-path-to-node=\"5,0\"\u003e\u003cb data-path-to-node=\"5,0\" data-index-in-node=\"0\"\u003eTMBR Tech Tip:\u003c\/b\u003e On the high-compression Ducati engines this plug typically serves, even a tiny fracture in the ceramic caused by manual gapping can lead to a catastrophic engine failure if the tip drops into the combustion chamber. \u003cb data-path-to-node=\"5,0\" data-index-in-node=\"231\"\u003eCheck it with a wire gauge, but don't touch it.\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0622\/5720\/1317\/files\/MADE_IN_JAPAN.jpg?v=1744046245\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003ePart Number: 6869\u003cbr\u003e\u003c\/p\u003e","brand":"NGK","offers":[{"title":"Default Title","offer_id":47551615893669,"sku":"NGK-MAR9A-J","price":24.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0622\/5720\/1317\/files\/NGK_MAR9A-J_Spark_Plug.png?v=1772685441","url":"https:\/\/www.tmbrmoto.com\/products\/ngk-spark-plug-mar9a-j","provider":"TMBR MOTO","version":"1.0","type":"link"}