{"product_id":"spark-exhaust-o2-sensor-bung-m18-stainless","title":"Spark Exhaust O2 Sensor Bung M18 Stainless Steel for Welding Universal SGATT139","description":"\u003cp\u003eA stainless bushing with an M18 thread, supplied to be welded into a pipe. Fifteen euro for the part that gives a fabricated system somewhere to put a sensor.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eWeld-in bung for a lambda sensor, M18 thread.\u003c\/li\u003e\n\u003cli\u003eStainless steel.\u003c\/li\u003e\n\u003cli\u003eBody Ø 25 mm, underside milled to a Ø 54 mm pipe.\u003c\/li\u003e\n\u003cli\u003eSupplied for welding to the pipe.\u003c\/li\u003e\n\u003cli\u003eSpark part number SGATT139, made in Mantova, Italy.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhere to Weld It\u003c\/h2\u003e\u003cp\u003eAt least three tube diameters downstream of a junction, and into a straight section rather than a bend. Gas leaving a collector or a corner is not evenly mixed, and a sensor reading disturbed flow gives a number that means nothing.\u003c\/p\u003e\u003cp\u003eAngle the bung so the sensor tip points slightly upward. A sensor mounted below the horizontal collects condensation and fails early.\u003c\/p\u003e\u003ch2\u003eWelding a Bung Into Thin Wall\u003c\/h2\u003e\u003cp\u003eThe bung is a heat sink and the pipe is one millimetre thick. Cut the hole accurately so the bung sits in it rather than on it, tack at four points, and keep the heat moving — the usual failure is a blown-through pipe wall beside a cold weld on the bung.\u003c\/p\u003e\u003ch2\u003eM18, Because Everything Is\u003c\/h2\u003e\u003cp\u003eAlmost every factory sensor uses M18 × 1.5. If the sensor you are fitting is M12, Spark's SGATT260 reducer threads into this bung.\u003c\/p\u003e\u003ch2\u003eOrdering\u003c\/h2\u003e\u003cp\u003eOne per sensor position. SGATT328 is the same bung in titanium, for a titanium system.\u003c\/p\u003e","brand":"Spark Exhaust","offers":[{"title":"Default Title","offer_id":53618387779850,"sku":"SGATT139","price":12.61,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/629071d6ece2b_471b93aa-668e-4bee-a370-81aac5351c21.png?v=1788354514","url":"https:\/\/inter-pace.com\/en-ao\/products\/spark-exhaust-o2-sensor-bung-m18-stainless","provider":"Inter-Pace","version":"1.0","type":"link"}