{"product_id":"spark-exhaust-lambda-plug-m18","title":"Spark Exhaust Lambda Sensor Plug M18 Brass Universal TAPPO007","description":"\u003cp\u003eThe M18 plug. The larger of Spark's two thread sizes, and the one most modern motorcycles use.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eM18 plug for closing an unused lambda sensor thread.\u003c\/li\u003e\n\u003cli\u003eBrass.\u003c\/li\u003e\n\u003cli\u003eSealing washer ROND18X24R is a separate article.\u003c\/li\u003e\n\u003cli\u003eSpark part number TAPPO007, made in Mantova, Italy.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eM18 Is the Common One\u003c\/h2\u003e\u003cp\u003eMost factory oxygen sensors use an M18 × 1.5 thread, which is why Spark's own weldable bung SGATT139 is cut to it. If you are closing a boss on a Spark system, this is the likelier of the two plugs.\u003c\/p\u003e\u003ch2\u003eWhen It Is Needed\u003c\/h2\u003e\u003cp\u003eOn a racing system without a sensor, on a bike with the standard sensor relocated, or on a second-hand exhaust that arrived with an open boss. In each case the requirement is the same — a gas-tight hole rather than an open one.\u003c\/p\u003e\u003ch2\u003eReducing Instead of Plugging\u003c\/h2\u003e\u003cp\u003eIf the boss is M18 and the sensor is M12, Spark's SGATT260 adapter reduces one to the other for eight euro. That is a different problem from closing a hole, and a different article.\u003c\/p\u003e\u003ch2\u003eThe Washer\u003c\/h2\u003e\u003cp\u003eROND18X24R, one euro, copper. It also fits the SGATT260 reducer. Ordering the plug without it is the usual reason a plugged boss still ticks at idle.\u003c\/p\u003e","brand":"Spark Exhaust","offers":[{"title":"Default Title","offer_id":53618380341514,"sku":"TAPPO007","price":11.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/629071b84f995_995c5256-2b6a-4909-954e-1cd67d7d92b8.png?v=1788354480","url":"https:\/\/inter-pace.com\/en-sv\/products\/spark-exhaust-lambda-plug-m18","provider":"Inter-Pace","version":"1.0","type":"link"}