{"product_id":"12-pcs-o2-sensor-bung-304-stainless-steel-m18x1-5-o2-bung","title":"12 Pcs O2 Sensor Bung, 304 Stainless Steel M18x1.5 O2 Bung","description":"\u003cp\u003e\u003cstrong\u003eHOHNNYREET 12-piece M18x1.5 O2 sensor bungs are stepped, weld-in fittings made from 304 stainless steel to accept standard oxygen sensors for exhaust systems.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis kit provides a dozen ready-to-weld bungs engineered to accept universal M18x1.5 oxygen sensors. Each bung uses 304 stainless steel for corrosion resistance and a stepped profile so the sensor sits flush when installed. The set is aimed at fabricators, exhaust shops, and vehicle owners who need reliable sensor ports for repairs, custom exhausts, or sensor relocation projects.\u003c\/p\u003e\n\n\u003ch3\u003eHow do these stepped O2 bungs simplify welding and installation?\u003c\/h3\u003e\n\n\u003cp\u003eThe stepped design creates a clear shoulder for welding and helps center the sensor for a neat, flush fit. That geometry shortens tack-weld time and reduces warping risk during fabrication. Installers report faster alignments and fewer post-weld adjustments.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eStepped profile provides a defined weld surface and sensor seat\u003c\/li\u003e\n  \u003cli\u003ePrecision-cut M18x1.5 threads for smooth sensor threading\u003c\/li\u003e\n  \u003cli\u003eConsistent dimensions across all 12 pieces for repeatable installs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and durability can I expect from these sensor bungs?\u003c\/h3\u003e\n\n\u003cp\u003eConstructed from 304 stainless steel, these bungs resist rust and oxidation better than mild steel in typical exhaust environments. 304 grade balances toughness with weldability, making it suitable for most automotive exhaust work. Proper welding technique and shielding will maximize longevity.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e304 stainless steel resists corrosion in exhaust applications\u003c\/li\u003e\n  \u003cli\u003eDurable under high-heat cycles common to exhaust systems\u003c\/li\u003e\n  \u003cli\u003eCompatible with common welding methods used in automotive shops\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAre these bungs compatible with my vehicle’s oxygen sensors and threads?\u003c\/h3\u003e\n\n\u003cp\u003eYes — each bung features a standard M18 x 1.5 thread size that matches the vast majority of automotive oxygen sensors. They accept threaded O2 sensors without adapters and secure the sensor tip at the correct depth thanks to the stepped inner seat. Always confirm your sensor thread spec before purchase if using a nonstandard part.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eStandard M18x1.5 threads fit most oxygen sensors\u003c\/li\u003e\n  \u003cli\u003eStepped seat aligns sensor tip for accurate exposure to exhaust flow\u003c\/li\u003e\n  \u003cli\u003eSold as a 12-piece set for multiple repairs or projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat installation tips improve fit and function?\u003c\/h3\u003e\n\n\u003cp\u003eClean mating surfaces and use proper weld shielding to avoid oxidation and overheating the sensor port. Tack-weld first to check alignment, then complete the weld to minimize distortion. Allow parts to cool to prevent thread damage before threading in sensors.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eDeburr and clean pipe where the bung will weld for a solid bead\u003c\/li\u003e\n  \u003cli\u003eTack-weld, verify alignment, then finish the weld to reduce warpage\u003c\/li\u003e\n  \u003cli\u003eUse anti-seize on sensor threads if recommended by the sensor maker\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This 12-piece HOHNNYREET stepped O2 bung set is intended for exhaust fabricators, performance tuners, repair shops, and DIY mechanics who regularly install or relocate oxygen sensors. It’s useful when building custom exhaust sections, repairing rusted sensor ports, or prepping multiple vehicles — the pack size and standardized M18x1.5 threads make it a convenient, repeatable solution for professionals and hobbyists alike.\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: Do these O2 bungs fit all oxygen sensors?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: They use the standard M18x1.5 thread compatible with most automotive O2 sensors; check your sensor’s thread spec to confirm.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are these bungs weld-ready and rust-resistant?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. They are stepped for welding and made from 304 stainless steel for improved corrosion resistance.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"HOHNNYREET","offers":[{"title":"Default Title","offer_id":48087689363614,"sku":"B0F2SFV86M","price":39.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/hohnnyreet-front-packaging-o2-bungs.jpg?v=1785928849","url":"https:\/\/northtrailauto.ca\/products\/12-pcs-o2-sensor-bung-304-stainless-steel-m18x1-5-o2-bung","provider":"North Trail Auto","version":"1.0","type":"link"}