{"product_id":"heat-sink-o2-bung","title":"411 Works Stainless Steel Heat Sink O2 Bung Coped","description":"\u003ch3\u003e411 Works Stainless Steel Heat Sink O2 Bung Coped | Precision CNC Machined | Stainless Steel Fabrication Component\u003c\/h3\u003e\n\n\u003ch4\u003eOverview\u003c\/h4\u003e\n\u003cp\u003eThe 411 Works Stainless Steel Heat Sink O2 Bung is a precision-machined component designed for custom exhaust fabrication and sensor installation. Crafted from high-quality 304L stainless steel, this O2 bung provides a reliable and durable mounting point for oxygen sensors, essential for accurate engine management and emissions monitoring. It is ideal for Subaru enthusiasts and fabricators who demand exact fitment and long-lasting performance in their exhaust setups.\u003c\/p\u003e\n\u003cp\u003eManufactured in-house on HAAS CNC machines using premium Swedish stainless steel, this bung exemplifies 411 Works’ commitment to quality and precision. The coped design allows it to fit seamlessly on exhaust tubing ranging from 2.5 to 4 inches in diameter, ensuring a clean and professional weld joint. The M18x1.5 threaded bung is standard for most O2 sensors, making it a versatile choice for a variety of Subaru platforms and custom builds.\u003c\/p\u003e\n\u003cp\u003eFor Subaru owners focused on performance and reliability, this heat sink O2 bung offers excellent thermal management to protect sensor accuracy and longevity. Its stainless steel construction resists corrosion and heat degradation, critical for the demanding conditions of turbocharged WRX, STI, and other Subaru exhaust systems. When paired with other 411 Works components, it facilitates a seamless fabrication experience that supports precise tuning and optimal engine performance.\u003c\/p\u003e\n\n\u003ch4\u003eFeatures \u0026amp; Specifications\u003c\/h4\u003e\n\u003cp\u003eThis 411 Works Stainless Steel Heat Sink O2 Bung is engineered for custom exhaust fabrication and sensor mounting, featuring a coped design for 2.5\" to 4\" tubing and M18x1.5 threads. Constructed from durable 304L stainless steel, it delivers corrosion resistance and thermal management for Subaru enthusiasts seeking reliable sensor integration.\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 Heat Sink O2 Bung Coped\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 411-O2HSWBSSM18X155\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Universal fit for 2.5\" - 4\" diameter 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 CNC machined, coped for tubing fitment\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\u003eTube Diameter Compatibility:\u003c\/strong\u003e 2.5\" - 4\"\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 Coped design ensures a perfect match to exhaust tubing for clean, strong welds.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e 304L stainless steel resists corrosion and withstands high exhaust temperatures.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThermal Management:\u003c\/strong\u003e Heat sink design helps protect O2 sensors from excessive heat, improving sensor lifespan and accuracy.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVersatility:\u003c\/strong\u003e Fits a wide range of tubing sizes common in Subaru exhaust systems, ideal for custom fabrication.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuality Manufacturing:\u003c\/strong\u003e CNC machining guarantees consistent dimensions and thread integrity for reliable sensor installation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMade in USA:\u003c\/strong\u003e Supports domestic manufacturing with premium imported materials for superior quality control.\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 Heat Sink 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 Heat Sink O2 Bung requires welding onto the exhaust tubing, making professional installation recommended unless you have welding experience and proper equipment. The coped design simplifies alignment on 2.5\" to 4\" diameter pipes, but precise fitment and weld quality are critical for sensor performance and exhaust integrity. No additional modifications are necessary beyond standard fabrication practices. This bung is compatible with all oxygen sensors using M18x1.5 threads and fits a broad range of Subaru exhaust setups and custom builds.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProfessional Installation:\u003c\/strong\u003e Recommended\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModifications Required:\u003c\/strong\u003e None beyond welding\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":46791981498543,"sku":"411-O2HSWBSSM18X151","price":12.0,"currency_code":"USD","in_stock":true},{"title":"M18x1.5 \/ Pack of 5","offer_id":46791981531311,"sku":"411-O2HSWBSSM18X155","price":48.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0587\/3598\/4815\/files\/411_Works_O2_Bung_Heat_Sink-1_533e9980-f8e0-4113-86b5-42440184992d.jpg?v=1779865925","url":"https:\/\/subimods.com\/products\/heat-sink-o2-bung","provider":"Subimods.com","version":"1.0","type":"link"}