{"product_id":"o2-bung","title":"411 Works Stainless Steel O2 Bung Coped","description":"\u003ch3\u003e411 Works Stainless Steel O2 Bung Coped | Precision CNC Machined | Exhaust Fabrication Component\u003c\/h3\u003e\n\n\u003ch4\u003eOverview\u003c\/h4\u003e\n\u003cp\u003eThe 411 Works Stainless Steel O2 Bung Coped is a high-quality exhaust component designed for precise installation of oxygen sensors in custom exhaust setups. Ideal for Subaru enthusiasts and fabricators working on WRX, STI, BRZ, or other models requiring reliable O2 sensor mounting, this bung ensures a secure and accurate fit for sensor placement. Its coped design allows it to seamlessly integrate with exhaust tubing ranging from 2.5 to 4 inches in diameter, making it versatile for various exhaust configurations.\u003c\/p\u003e\n\u003cp\u003eManufactured in-house on HAAS CNC machines, the bung is crafted from premium 304L stainless steel sourced from Sweden, reflecting 411 Works’ commitment to quality and durability. The precision machining process guarantees consistent thread quality and dimensional accuracy, essential for leak-free sensor installation and long-term reliability. Made in the USA, this component stands out for its meticulous engineering and robust material selection, tailored for demanding performance applications.\u003c\/p\u003e\n\u003cp\u003eFor Subaru owners focused on custom exhaust builds or repairs, this O2 bung offers a dependable solution that maintains sensor integrity and exhaust system efficiency. Its compatibility with a wide range of tube sizes and the standard M18x1.5 thread pitch ensures it fits most Subaru oxygen sensors without modification. Using this bung supports accurate air-fuel ratio monitoring, which is critical for tuning and engine management on turbocharged and naturally aspirated Subaru platforms.\u003c\/p\u003e\n\n\u003ch4\u003eFeatures \u0026amp; Specifications\u003c\/h4\u003e\n\u003cp\u003eThis 411 Works Stainless Steel O2 Bung is engineered for universal exhaust applications and features a coped design to fit 2.5\" to 4\" diameter tubing. Constructed from 304L stainless steel, it delivers corrosion resistance and precision fitment for Subaru enthusiasts seeking reliable sensor mounting in custom exhaust fabrication.\u003c\/p\u003e\n\u003cul style=\"list-style:none;padding:0;margin:0;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e 411 Works\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProduct:\u003c\/strong\u003e Stainless Steel O2 Bung Coped\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 411-O2WBSSM18X155\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Universal fit for 2.5\" - 4\" diameter exhaust tubing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 304L Stainless Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Natural stainless steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Precision CNC machined\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA with Swedish steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size:\u003c\/strong\u003e M18x1.5\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDesign:\u003c\/strong\u003e Coped to fit tubing diameter range\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eKey Benefits\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrecision Fitment:\u003c\/strong\u003e CNC machining ensures exact thread dimensions and coped profile for a secure, leak-free sensor mount.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e 304L stainless steel construction resists corrosion and withstands high exhaust temperatures common in Subaru turbo applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVersatility:\u003c\/strong\u003e Designed to fit a broad range of exhaust tube sizes (2.5\" to 4\"), accommodating various custom and OEM exhaust setups.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMade in USA Quality:\u003c\/strong\u003e Manufactured domestically with premium Swedish steel, ensuring consistent quality control and material integrity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubaru Compatibility:\u003c\/strong\u003e Standard M18x1.5 thread fits most Subaru oxygen sensors, supporting accurate engine management and tuning.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFabrication Friendly:\u003c\/strong\u003e Coped design simplifies welding and integration into exhaust systems, reducing installation time and complexity.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eWhat's Included\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1× 411 Works Stainless Steel O2 Bung Coped\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eInstallation \u0026amp; Compatibility\u003c\/h4\u003e\n\u003cp\u003eInstallation of the 411 Works Stainless Steel O2 Bung requires welding skills and appropriate equipment to ensure a proper seal and sensor placement. It is a straightforward upgrade or fabrication component for experienced DIYers or professional exhaust shops. No special tools beyond standard welding gear are necessary. This bung is compatible with exhaust tubing between 2.5\" and 4\" in diameter and uses the common M18x1.5 thread size, which fits most Subaru oxygen sensors without modification.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProfessional Installation:\u003c\/strong\u003e Recommended for welding and leak-free sensor mounting\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModifications Required:\u003c\/strong\u003e None beyond welding to exhaust tubing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVerify Compatibility:\u003c\/strong\u003e Confirm tubing diameter and sensor thread size before installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eShop with confidence at Subimods—your Subaru parts specialists.\u003c\/p\u003e","brand":"411 Works","offers":[{"title":"M18x1.5 \/ 1 Single","offer_id":46791981433007,"sku":"411-O2WBSSM18X151","price":7.5,"currency_code":"USD","in_stock":true},{"title":"M18x1.5 \/ Pack of 5","offer_id":46791981465775,"sku":"411-O2WBSSM18X155","price":30.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0587\/3598\/4815\/files\/411_Works_O2_Bung_Non_Heat_Sink-3.jpg?v=1779865926","url":"https:\/\/subimods.com\/products\/o2-bung","provider":"Subimods.com","version":"1.0","type":"link"}