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A quality weld-in bung is a smart way to add an o2 sensor, petcock drain, or plumbing fitting to automotive components like exhaust tubing, oil pans, fuel cells, or...
A quality weld-in bung is a smart way to add an o2 sensor, petcock drain, or plumbing fitting to automotive components like exhaust tubing, oil pans, fuel cells, or intake manifolds. And weld-in bungs are downright essential if you’re building a custom exhaust and need to add an oxygen sensor anywhere in the header tubes or exhaust system.
Better yet, if you’re drilling a hole in your oil pan or fuel cell to add a fitting for something like a drain, fuel line, or an external oil cooler, a weld-in bung can save a ton of time and hassle over cutting, drilling, and tapping one yourself. Weld-in bungs are also handy for folks...
A quality weld-in bung is a smart way to add an o2 sensor, petcock drain, or plumbing fitting to automotive components like exhaust tubing, oil pans, fuel cells, or intake manifolds. And weld-in bungs are downright essential if you’re building a custom exhaust and need to add an oxygen sensor anywhere in the header tubes or exhaust system.
Better yet, if you’re drilling a hole in your oil pan or fuel cell to add a fitting for something like a drain, fuel line, or an external oil cooler, a weld-in bung can save a ton of time and hassle over cutting, drilling, and tapping one yourself. Weld-in bungs are also handy for folks building custom nitrous systems, where you may need to add an assortment of sensors and injectors to ensure it operates correctly.
Whether your want an aluminum bung or a steel bung, a weld-in threaded bung, or metric weld bung, Summit Racing carries plenty of weld-in options in a range of sizes and threads. From AN and metric thread to trusty NPT, you can find a weld-in bung that’s perfect for your precise need. And having a wide selection of weld-in bungs is vital, because weld-on bungs are ideal for a lot of critical applications, including oxygen sensors, along with any sort of plumbing for external fluid coolers, turbo and supercharger oiling systems, air conditioning lines, and gauges. But again, if you’re here, there’s a good chance it’s because you need a weld-in bung for an oxygen sensor. And for that, we’ve got your covered.
Even if it’s not for an o2 sensor, you can find the best weld-in bung for your needs by using Summit Racing’s handy search filters to narrow down your results. Adjust your filters by vital search parameters like the weld-in bung’s thread pitch, outside diameter, and material. There are hundreds of weld-in bung options to choose from, so there’s a very, very good chance you’ll find the right weld-in fitting or sensor bung for your ride right here at Summit Racing.
Showing In Stock Items. Show All 26 Items.
Fitting, Bung, Weld-In, EGT Sensor, Stainless Steel, 1/4 in. Compression, Each
Part Number: LDM-153309
Not Yet Reviewed
Estimated Ship Date: Monday 12/8/2025
Estimated Ship Date: Monday 12/8/2025
Mail - In Rebate
Rebate amount based on part(s) total.
Rebate Expires: 12/31/2025
Fitting, Oxygen Sensor Adaptor, 12mm Male, 18mm Female, Stainless Steel, 45 Degree Angle, Each
Part Number: INN-38350
Estimated Ship Date: Monday 12/8/2025
Mail - In Rebate
Rebate amount based on part(s) total.
Rebate Expires: 12/31/2025
Estimated Ship Date: Monday 12/8/2025
Fitting, Bung, Weld-In, Stainless Steel, Female 1/8 in. NPT, Each
Part Number: LDM-45005
Not Yet Reviewed
Estimated Ship Date: Monday 12/8/2025
Estimated Ship Date: Monday 12/8/2025
Fitting, Chassis Bung, Weld-In, Female 5/16-18 in., Steel, Set of 4
Part Number: JOE-37332
Not Yet Reviewed
Estimated Ship Date: Monday 12/8/2025
Estimated Ship Date: Monday 12/8/2025
Fitting, Bung, Weld-In, EGT Sensor, Stainless Steel, 1/8 in. Compression, Each
Part Number: LDM-153321
Not Yet Reviewed
Estimated Ship Date: Monday 12/8/2025
Estimated Ship Date: Monday 12/8/2025
Fitting, Chassis Bung, Weld-In, Female 7/16-14 in., Steel, Set of 4
Part Number: JOE-37336
Not Yet Reviewed
Estimated Ship Date: Monday 12/8/2025
Estimated Ship Date: Monday 12/8/2025
Fitting, Bung, Weld-In, Aluminum, Female 3/8 in. NPT, Each
Part Number: LDM-45004
Not Yet Reviewed
Estimated Ship Date: Monday 12/8/2025
Estimated Ship Date: Monday 12/8/2025
Weld-On Fuel Filler Neck, 2.250 in. O.D., 3.000 in. Tall, External Threads, Accepts Tanks Inc, CC Aluminum Gas Cap, Stainless Steel, Each
Part Number: TNK-5BS
Not Yet Reviewed
Estimated Ship Date: Monday 12/8/2025
Estimated Ship Date: Monday 12/8/2025
Bung, O2 Sensor Weld Nut, 18mm x 1.5 Female Threads, Steel, Flanged, Each
Part Number: DTT-115003
Estimated Ship Date: Monday 12/8/2025
Estimated Ship Date: Monday 12/8/2025
Fitting, Bung, Weld-In, Oxygen Sensor, Aluminum, 18mm x 1.5, Each
Part Number: LDM-45007
Not Yet Reviewed
Estimated Ship Date: Monday 12/8/2025
Estimated Ship Date: Monday 12/8/2025
Fitting, Bung, Weld-In, Oxygen Sensor, Stainless Steel, 18mm x 1.5, Each
Part Number: LDM-45006
Not Yet Reviewed
Estimated Ship Date: Monday 12/8/2025
Estimated Ship Date: Monday 12/8/2025
Fitting, Chassis Bung, Weld-In, Female 1/2-13 in., Steel, Set of 4
Part Number: JOE-37338
Not Yet Reviewed
Estimated Ship Date: Monday 12/8/2025
Estimated Ship Date: Monday 12/8/2025
Fitting, Chassis Bung, Weld-In, Female 1/4-20 in., Steel, Set of 4
Part Number: JOE-37330
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
Fitting, Chassis Bung, Weld-In, Female 3/8-16 in., Steel, Set of 4
Part Number: JOE-37334
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
Fitting, Bung, Weld-In, Aluminum, Female 1/4 in. NPT, Each
Part Number: LDM-45003
Not Yet Reviewed
Estimated Ship Date: Monday 12/8/2025
Estimated Ship Date: Monday 12/8/2025
Fitting, Bung, Weld-In, Aluminum, Female M16 x 1.5, Each
Part Number: LDM-45008
Not Yet Reviewed
Estimated Ship Date: Monday 12/8/2025
Estimated Ship Date: Monday 12/8/2025
Fitting, Bung, Weld-In, Aluminum, Female 1/8 in. NPT, Each
Part Number: LDM-45002
Not Yet Reviewed
Estimated Ship Date: Monday 12/8/2025
Estimated Ship Date: Monday 12/8/2025
Weld-In Bungs, Nuts and Fittings, Weld-In Bung, Sprint Car Seat Belt, Steel, Natural, with Shoulder, Each
Part Number: AAF-ALL98125
Not Yet Reviewed
Estimated Ship Date: Monday 12/8/2025
Estimated Ship Date: Monday 12/8/2025
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