{"title":"Weld Bungs","description":"\u003cp\u003eConfirm bung material, thread and sealing design before fabrication. Match the welding process to the components and verify the completed connection.\u003c\/p\u003e\u003ch2\u003eSpecifications \u0026amp; installation help\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/pages\/an-fitting-size-thread-torque-guide\"\u003eAN fitting sizes, threads \u0026amp; torque\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/pages\/npt-thread-size-guide\"\u003eNPT thread sizes\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003ca href=\"\/pages\/finish-line-factory-technical-info\"\u003eFinish Line Factory technical library\u003c\/a\u003e · \u003ca href=\"\/collections\/finish-line-factory-performance-parts\"\u003eAll Finish Line Factory parts\u003c\/a\u003e · \u003ca href=\"\/pages\/contact\"\u003eGet help matching components\u003c\/a\u003e\u003c\/p\u003e","products":[{"product_id":"an-weld-bung-stainless-steel","title":"AN Weld Bung – Stainless Steel","description":"\u003cp\u003eFinish Line Factory’s precision made, high quality AN Weld-on Bungs are ideal for the delivery of fuel, oil, water, air, or any fluid of your choice.\u003c\/p\u003e\u003c!-- flf-technical-links-2026-10-06 --\u003e\u003csection class=\"flf-technical-links\"\u003e\u003ch2\u003eTechnical information \u0026amp; fitment help\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/finish-line-factory-technical-info\"\u003eFinish Line Factory technical library\u003c\/a\u003e · \u003ca href=\"\/pages\/an-fitting-size-thread-torque-guide\"\u003eAN fitting sizes, threads \u0026amp; torque\u003c\/a\u003e · \u003ca href=\"\/pages\/npt-thread-size-guide\"\u003eNPT thread sizes\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eConfirm the exact part, connection and operating conditions before assembly. \u003ca href=\"\/pages\/contact\"\u003eAsk Lee Motorsports about your setup\u003c\/a\u003e.\u003c\/p\u003e\u003c\/section\u003e","brand":"Finish Line Factory","offers":[{"title":"03 AN","offer_id":52506007372076,"sku":null,"price":7.81,"currency_code":"USD","in_stock":true},{"title":"04 AN","offer_id":52506007404844,"sku":null,"price":7.81,"currency_code":"USD","in_stock":true},{"title":"06 AN","offer_id":52506007437612,"sku":null,"price":9.3,"currency_code":"USD","in_stock":true},{"title":"08 AN","offer_id":52506007470380,"sku":null,"price":10.45,"currency_code":"USD","in_stock":true},{"title":"10 AN","offer_id":52506007503148,"sku":null,"price":14.82,"currency_code":"USD","in_stock":true},{"title":"12 AN","offer_id":52506007535916,"sku":null,"price":21.61,"currency_code":"USD","in_stock":true},{"title":"16 AN","offer_id":52506007568684,"sku":null,"price":26.09,"currency_code":"USD","in_stock":true},{"title":"20 AN","offer_id":52506007601452,"sku":null,"price":36.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0698\/6429\/2652\/files\/stainless-steel-weld-bung.jpg?v=1767215643"},{"product_id":"barb-weld-bung-aluminum","title":"Barb Weld Bung – Aluminum","description":"\u003cp\u003eFinish Line Factory’s precision made, high quality Barb Weld Bungs are ideal for the delivery of fuel, oil, water, air, or any fluid of your choice. Perfect for situations where using a threaded attachment may not be necessary.\u003c\/p\u003e \u003cp\u003eOur fittings provide strength in extreme conditions and are easy and fast to assemble. We only use high-quality seals and o-rings to provide a leak-free seal, especially when used with volatile liquids like racing fuels and some oils\/coolants. Additionally, each of our fittings is given either a matte or polished finish to provide your vehicle’s fluid delivery system a quality look, feel, and performance.\u003c\/p\u003e\u003c!-- flf-technical-links-2026-10-06 --\u003e\u003csection class=\"flf-technical-links\"\u003e\u003ch2\u003eTechnical information \u0026amp; fitment help\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/finish-line-factory-technical-info\"\u003eFinish Line Factory technical library\u003c\/a\u003e · \u003ca href=\"\/pages\/an-fitting-size-thread-torque-guide\"\u003eAN fitting sizes, threads \u0026amp; torque\u003c\/a\u003e · \u003ca href=\"\/pages\/npt-thread-size-guide\"\u003eNPT thread sizes\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eConfirm the exact part, connection and operating conditions before assembly. \u003ca href=\"\/pages\/contact\"\u003eAsk Lee Motorsports about your setup\u003c\/a\u003e.\u003c\/p\u003e\u003c\/section\u003e","brand":"Finish Line Factory","offers":[{"title":"3\/4 Barb","offer_id":52506017956140,"sku":null,"price":9.65,"currency_code":"USD","in_stock":true},{"title":"1\/4 Barb","offer_id":52506017988908,"sku":null,"price":5.05,"currency_code":"USD","in_stock":true},{"title":"3\/8 Barb","offer_id":52506018021676,"sku":null,"price":5.05,"currency_code":"USD","in_stock":true},{"title":"1\/2 Barb","offer_id":52506018054444,"sku":null,"price":5.51,"currency_code":"USD","in_stock":true},{"title":"5\/8 Barb","offer_id":52506018087212,"sku":null,"price":6.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0698\/6429\/2652\/files\/Barbed-Weld-Bung-1.png?v=1767215723"},{"product_id":"o2-sensor-weld-bung-steel","title":"O2 Sensor Weld Bung – Steel","description":"\u003cp\u003eFinish Line Factory O2 Sensor Weld Bungs are a must-have when building a new exhaust system for your car or if you’re converting an older car to use fuel injection.\u003c\/p\u003e\u003c!-- flf-technical-links-2026-10-06 --\u003e\u003csection class=\"flf-technical-links\"\u003e\u003ch2\u003eTechnical information \u0026amp; fitment help\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/finish-line-factory-technical-info\"\u003eFinish Line Factory technical library\u003c\/a\u003e · \u003ca href=\"\/pages\/an-fitting-size-thread-torque-guide\"\u003eAN fitting sizes, threads \u0026amp; torque\u003c\/a\u003e · \u003ca href=\"\/pages\/npt-thread-size-guide\"\u003eNPT thread sizes\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eConfirm the exact part, connection and operating conditions before assembly. \u003ca href=\"\/pages\/contact\"\u003eAsk Lee Motorsports about your setup\u003c\/a\u003e.\u003c\/p\u003e\u003c\/section\u003e","brand":"Finish Line Factory","offers":[{"title":"Default Title","offer_id":52506021822764,"sku":null,"price":6.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0698\/6429\/2652\/files\/O2-sensor-weld-bung-steel.png?v=1767215738"},{"product_id":"o2-sensor-weld-bung-aluminum","title":"O2 Sensor Weld Bung – Aluminum","description":"\u003cp\u003eFinish Line Factory O2 Sensor Weld Bungs are a must-have when building a new exhaust system for your car or if you’re converting an older car to use fuel injection.\u003c\/p\u003e\u003c!-- flf-technical-links-2026-10-06 --\u003e\u003csection class=\"flf-technical-links\"\u003e\u003ch2\u003eTechnical information \u0026amp; fitment help\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/finish-line-factory-technical-info\"\u003eFinish Line Factory technical library\u003c\/a\u003e · \u003ca href=\"\/pages\/an-fitting-size-thread-torque-guide\"\u003eAN fitting sizes, threads \u0026amp; torque\u003c\/a\u003e · \u003ca href=\"\/pages\/npt-thread-size-guide\"\u003eNPT thread sizes\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eConfirm the exact part, connection and operating conditions before assembly. \u003ca href=\"\/pages\/contact\"\u003eAsk Lee Motorsports about your setup\u003c\/a\u003e.\u003c\/p\u003e\u003c\/section\u003e","brand":"Finish Line Factory","offers":[{"title":"Default Title","offer_id":52506022543660,"sku":null,"price":4.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0698\/6429\/2652\/files\/O2-sensor-weld-bung-steel_826ff753-3d69-4961-82b8-de991a095157.png?v=1767215747"},{"product_id":"o2-sensor-weld-bung-stainless-steel","title":"O2 Sensor Weld Bung – Stainless Steel","description":"\u003cp\u003eFinish Line Factory O2 Sensor Weld Bungs are a must-have when building a new exhaust system for your car or if you’re converting an older car to use fuel injection.\u003c\/p\u003e\u003c!-- flf-technical-links-2026-10-06 --\u003e\u003csection class=\"flf-technical-links\"\u003e\u003ch2\u003eTechnical information \u0026amp; fitment help\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/finish-line-factory-technical-info\"\u003eFinish Line Factory technical library\u003c\/a\u003e · \u003ca href=\"\/pages\/an-fitting-size-thread-torque-guide\"\u003eAN fitting sizes, threads \u0026amp; torque\u003c\/a\u003e · \u003ca href=\"\/pages\/npt-thread-size-guide\"\u003eNPT thread sizes\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eConfirm the exact part, connection and operating conditions before assembly. \u003ca href=\"\/pages\/contact\"\u003eAsk Lee Motorsports about your setup\u003c\/a\u003e.\u003c\/p\u003e\u003c\/section\u003e","brand":"Finish Line Factory","offers":[{"title":"Default Title","offer_id":52506022576428,"sku":null,"price":9.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0698\/6429\/2652\/files\/O2-sensor-weld-bung-steel_be0d7ab7-ce7f-4e70-8613-070894066572.png?v=1767215749"},{"product_id":"npt-weld-bung-stainless-steel","title":"NPT Weld Bung – Stainless Steel","description":"\u003cp\u003eFinish Line Factory’s precision made, high quality NPT Weld-on Bungs are ideal for the delivery of fuel, oil, water, air, or any fluid of your choice.\u003c\/p\u003e \u003cp\u003eOur fittings provide strength in extreme conditions and are easy and fast to assemble. We only use high-quality seals and o-rings to provide a leak-free seal, especially when used with volatile liquids like racing fuels and some oils\/coolants. Additionally, each of our fittings is given either a matte or polished finish to provide your vehicle’s fluid delivery system a quality look, feel, and performance.\u003c\/p\u003e\u003c!-- flf-technical-links-2026-10-06 --\u003e\u003csection class=\"flf-technical-links\"\u003e\u003ch2\u003eTechnical information \u0026amp; fitment help\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/finish-line-factory-technical-info\"\u003eFinish Line Factory technical library\u003c\/a\u003e · \u003ca href=\"\/pages\/an-fitting-size-thread-torque-guide\"\u003eAN fitting sizes, threads \u0026amp; torque\u003c\/a\u003e · \u003ca href=\"\/pages\/npt-thread-size-guide\"\u003eNPT thread sizes\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eConfirm the exact part, connection and operating conditions before assembly. \u003ca href=\"\/pages\/contact\"\u003eAsk Lee Motorsports about your setup\u003c\/a\u003e.\u003c\/p\u003e\u003c\/section\u003e","brand":"Finish Line Factory","offers":[{"title":"1\/2 NPT","offer_id":52506027458860,"sku":null,"price":14.59,"currency_code":"USD","in_stock":true},{"title":"3\/8 NPT","offer_id":52506027491628,"sku":null,"price":12.18,"currency_code":"USD","in_stock":true},{"title":"1\/4 NPT","offer_id":52506027524396,"sku":null,"price":12.18,"currency_code":"USD","in_stock":true},{"title":"1\/8 NPT","offer_id":52506027557164,"sku":null,"price":12.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0698\/6429\/2652\/files\/steel-npt-weld-bung-1-1.png?v=1767215811"},{"product_id":"npt-weld-bung-steel","title":"NPT Weld Bung – Steel","description":"\u003cp\u003eFinish Line Factory’s precision made, high quality NPT Weld-on Bungs are ideal for the delivery of fuel, oil, water, air, or any fluid of your choice.\u003c\/p\u003e \u003cp\u003eOur fittings provide strength in extreme conditions and are easy and fast to assemble. We only use high-quality seals and o-rings to provide a leak-free seal, especially when used with volatile liquids like racing fuels and some oils\/coolants. Additionally, each of our fittings is given either a matte or polished finish to provide your vehicle’s fluid delivery system a quality look, feel, and performance.\u003c\/p\u003e\u003c!-- flf-technical-links-2026-10-06 --\u003e\u003csection class=\"flf-technical-links\"\u003e\u003ch2\u003eTechnical information \u0026amp; fitment help\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/finish-line-factory-technical-info\"\u003eFinish Line Factory technical library\u003c\/a\u003e · \u003ca href=\"\/pages\/an-fitting-size-thread-torque-guide\"\u003eAN fitting sizes, threads \u0026amp; torque\u003c\/a\u003e · \u003ca href=\"\/pages\/npt-thread-size-guide\"\u003eNPT thread sizes\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eConfirm the exact part, connection and operating conditions before assembly. \u003ca href=\"\/pages\/contact\"\u003eAsk Lee Motorsports about your setup\u003c\/a\u003e.\u003c\/p\u003e\u003c\/section\u003e","brand":"Finish Line Factory","offers":[{"title":"1\/2 NPT","offer_id":52506027589932,"sku":null,"price":8.96,"currency_code":"USD","in_stock":true},{"title":"1\/8 NPT","offer_id":52506027622700,"sku":null,"price":6.2,"currency_code":"USD","in_stock":true},{"title":"3\/8 NPT","offer_id":52506027655468,"sku":null,"price":7.92,"currency_code":"USD","in_stock":true},{"title":"1\/4 NPT","offer_id":52506027688236,"sku":null,"price":6.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0698\/6429\/2652\/files\/steel-npt-weld-bung-1-2.png?v=1767215813"},{"product_id":"npt-weld-bung-aluminum","title":"NPT Weld Bung – Aluminum","description":"\u003cp\u003eFinish Line Factory’s precision made, high quality NPT Weld-on Bungs are ideal for the delivery of fuel, oil, water, air, or any fluid of your choice.\u003c\/p\u003e \u003cp\u003eOur fittings provide strength in extreme conditions and are easy and fast to assemble. We only use high-quality seals and o-rings to provide a leak-free seal, especially when used with volatile liquids like racing fuels and some oils\/coolants. Additionally, each of our fittings is given either a matte or polished finish to provide your vehicle’s fluid delivery system a quality look, feel, and performance.\u003c\/p\u003e\u003c!-- flf-technical-links-2026-10-06 --\u003e\u003csection class=\"flf-technical-links\"\u003e\u003ch2\u003eTechnical information \u0026amp; fitment help\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/finish-line-factory-technical-info\"\u003eFinish Line Factory technical library\u003c\/a\u003e · \u003ca href=\"\/pages\/an-fitting-size-thread-torque-guide\"\u003eAN fitting sizes, threads \u0026amp; torque\u003c\/a\u003e · \u003ca href=\"\/pages\/npt-thread-size-guide\"\u003eNPT thread sizes\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eConfirm the exact part, connection and operating conditions before assembly. \u003ca href=\"\/pages\/contact\"\u003eAsk Lee Motorsports about your setup\u003c\/a\u003e.\u003c\/p\u003e\u003c\/section\u003e","brand":"Finish Line Factory","offers":[{"title":"1\/2 NPT","offer_id":52506027786540,"sku":null,"price":9.19,"currency_code":"USD","in_stock":true},{"title":"1\/4 NPT","offer_id":52506027819308,"sku":null,"price":7.35,"currency_code":"USD","in_stock":true},{"title":"3\/8 NPT","offer_id":52506027852076,"sku":null,"price":7.58,"currency_code":"USD","in_stock":true},{"title":"1\/8 NPT","offer_id":52506027884844,"sku":null,"price":6.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0698\/6429\/2652\/files\/aluminum-npt-weld-bung-2.png?v=1767215815"},{"product_id":"an-weld-bung-steel","title":"AN Weld Bung – Steel","description":"\u003cp\u003eFinish Line Factory’s precision made, high quality AN Weld-on Bungs are ideal for the delivery of fuel, oil, water, air, or any fluid of your choice.\u003c\/p\u003e \u003cp\u003eOur fittings provide strength in extreme conditions and are easy and fast to assemble. We only use high-quality seals and o-rings to provide a leak-free seal, especially when used with volatile liquids like racing fuels and some oils\/coolants. Additionally, each of our fittings is given either a matte or polished finish to provide your vehicle’s fluid delivery system a quality look, feel, and performance.\u003c\/p\u003e\u003c!-- flf-technical-links-2026-10-06 --\u003e\u003csection class=\"flf-technical-links\"\u003e\u003ch2\u003eTechnical information \u0026amp; fitment help\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/finish-line-factory-technical-info\"\u003eFinish Line Factory technical library\u003c\/a\u003e · \u003ca href=\"\/pages\/an-fitting-size-thread-torque-guide\"\u003eAN fitting sizes, threads \u0026amp; torque\u003c\/a\u003e · \u003ca href=\"\/pages\/npt-thread-size-guide\"\u003eNPT thread sizes\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eConfirm the exact part, connection and operating conditions before assembly. \u003ca href=\"\/pages\/contact\"\u003eAsk Lee Motorsports about your setup\u003c\/a\u003e.\u003c\/p\u003e\u003c\/section\u003e","brand":"Finish Line Factory","offers":[{"title":"03 AN","offer_id":52506029392172,"sku":null,"price":8.04,"currency_code":"USD","in_stock":true},{"title":"12 AN","offer_id":52506029424940,"sku":null,"price":11.03,"currency_code":"USD","in_stock":true},{"title":"04 AN","offer_id":52506029457708,"sku":null,"price":7.58,"currency_code":"USD","in_stock":true},{"title":"06 AN","offer_id":52506029490476,"sku":null,"price":7.58,"currency_code":"USD","in_stock":true},{"title":"08 AN","offer_id":52506029523244,"sku":null,"price":8.38,"currency_code":"USD","in_stock":true},{"title":"20 AN","offer_id":52506029556012,"sku":null,"price":17.24,"currency_code":"USD","in_stock":true},{"title":"16 AN","offer_id":52506029588780,"sku":null,"price":13.56,"currency_code":"USD","in_stock":true},{"title":"10 AN","offer_id":52506029621548,"sku":null,"price":9.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0698\/6429\/2652\/files\/steel-an-weld-on-fitting-1.jpg?v=1767215831"},{"product_id":"an-weld-bung-aluminum","title":"AN Weld Bung – Aluminum","description":"\u003cp\u003eFinish Line Factory’s precision made, high quality AN Weld-on Bungs are ideal for the delivery of fuel, oil, water, air, or any fluid of your choice.\u003c\/p\u003e \u003cp\u003eOur fittings provide strength in extreme conditions and are easy and fast to assemble. We only use high-quality seals and o-rings to provide a leak-free seal, especially when used with volatile liquids like racing fuels and some oils\/coolants. Additionally, each of our fittings is given either a matte or polished finish to provide your vehicle’s fluid delivery system a quality look, feel, and performance.\u003c\/p\u003e\u003c!-- flf-technical-links-2026-10-06 --\u003e\u003csection class=\"flf-technical-links\"\u003e\u003ch2\u003eTechnical information \u0026amp; fitment help\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/finish-line-factory-technical-info\"\u003eFinish Line Factory technical library\u003c\/a\u003e · \u003ca href=\"\/pages\/an-fitting-size-thread-torque-guide\"\u003eAN fitting sizes, threads \u0026amp; torque\u003c\/a\u003e · \u003ca href=\"\/pages\/npt-thread-size-guide\"\u003eNPT thread sizes\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eConfirm the exact part, connection and operating conditions before assembly. \u003ca href=\"\/pages\/contact\"\u003eAsk Lee Motorsports about your setup\u003c\/a\u003e.\u003c\/p\u003e\u003c\/section\u003e","brand":"Finish Line Factory","offers":[{"title":"08 AN","offer_id":52506029687084,"sku":null,"price":8.27,"currency_code":"USD","in_stock":true},{"title":"12 AN","offer_id":52506029719852,"sku":null,"price":10.45,"currency_code":"USD","in_stock":true},{"title":"06 AN","offer_id":52506029752620,"sku":null,"price":7.58,"currency_code":"USD","in_stock":true},{"title":"04 AN","offer_id":52506029785388,"sku":null,"price":7.58,"currency_code":"USD","in_stock":true},{"title":"03 AN","offer_id":52506029818156,"sku":null,"price":7.35,"currency_code":"USD","in_stock":true},{"title":"20 AN","offer_id":52506029850924,"sku":null,"price":17.12,"currency_code":"USD","in_stock":true},{"title":"16 AN","offer_id":52506029883692,"sku":null,"price":13.44,"currency_code":"USD","in_stock":true},{"title":"10 AN","offer_id":52506029916460,"sku":null,"price":9.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0698\/6429\/2652\/files\/aluminum-an-weld-on-fitting-1.jpg?v=1767215833"}],"url":"https:\/\/www.lee-motorsports.com\/collections\/weld-bungs.oembed","provider":"Lee Motorsports","version":"1.0","type":"link"}