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Weld-In Bungs, Nuts and Fittings
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 104 Items.
Vibrant Performance J-Style Oxygen Sensor Fittings
Vibrant Performance J-style oxygen sensor fittings help you to complete your project with quality bungs and great value. When clearance under the vehicle is an issue, their "J" shape allows for an easier installation, by placing the sensor parallel to the exhaust pipe. Vibrant sensor fittings are crafted from T304 stainless steel.
( 17 )
$32.50
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$40.99
Vibrant Performance Standard Oxygen Sensor Fittings
Vibrant Performance oxygen sensor fittings help you to complete your project with quality bungs and great value. All of their standard bungs accept all standard O2 sensors and are crafted from either T304 or mild steel. Plus, they're available individually or in bulk. Choose from the assortment of standard oxygen sensor fittings from Vibrant Performance to finish your job right.
( 106 )
$3.29
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$459.99
Summit Racing™ Oxygen Sensor Bungs
Summit Racing™ Oxygen Sensor bungs or "O2 Bungs" are what you need to put oxygen sensors in your exhaust when retrofitting fuel injection or test equipment to the exhaust of your vehicle. They weld in and come in mild steel or stainless.
( 79 )
$3.99
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$10.99
ICT Billet Weld-In Bungs and Fittings
ICT Billet weld-in bungs and fittings enable the installation of various sensors, fittings, or barbs. ICT Billet weld-in bungs and fittings will assist in making your job a success. Order the size, material, and attachment options needed for your application.
( 61 )
$10.99
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$29.99
Summit Racing™ Weld-In Bungs
If you'd rather build it than buy it, Summit Racing™ has you covered with our weld-in bungs. Whether it's a fuel cell, catch can, or oil tank, we offer these quality weld-in bungs in multiple sizes and materials to fit your fabricating needs.
( 72 )
$3.99
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$9.99
Vibrant Performance Weld Bungs
Vibrant AN and NPT weld bungs are ideal to help you with your custom plumbing project. They are manufactured from quality materials--mild steel or T6061 billet aluminum--and are available in female NPT, male AN, and female AN thread and O.D. sizes to suit your application--and your budget--perfectly. Let Vibrant help you with aluminum radiators, oil pans, custom tank fabrication, or any other project that requires custom plumbing.
( 42 )
$3.79
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$54.99
On Sale
Holley EGT Bungs
Holley EGT bungs are quality replacement service parts designed exclusively for use with Holley's 8-Channel Exhaust Gas Temperature Monitoring kit (sold separately). Made from 316 stainless steel, these weldment bung fittings feature a built-in step—which keeps the bung held in place during the welding process, ensuring a perfect weld. They're sold individually or in multiple-piece count sets.
Not Yet Reviewed
$188.95
$28.60
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$170.05
NGK Weld-in Oxygen Sensor Bungs and Plugs
NGK weld in oxygen sensor bungs and plugs are just what you need to install an oxygen sensor in your vehicle. These are designed to be welded anywhere in the exhaust system, and includes a plug to seal the boss whenever the sensor is removed.
( 22 )
$11.99
Earl's Performance Weld-In Oxygen Sensor Bungs
Earl's oxygen sensor weld fittings are the ideal way to add a sensor when converting to EFI or adding a wideband air/fuel gauge for tuning carbureted engines. The weld fittings are available in steel or stainless steel to match your exhaust system. The thread size is 18mm x 1.5 and fit most OEM and aftermarket oxygen sensors. They feature a recessed step for easy installation by drilling a hole in the exhaust system and welding the fitting in place.
( 13 )
$11.46
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$15.79
Hedman Weld-In O2 Sensor Bungs
When doing a custom installation or fabricating your own header setup, make sure you use the right components. Hedman weld-in O2 sensor bungs help make your job easier, and because they're from Hedman, you can be sure that they're top quality.
( 8 )
$7.99
Allstar Performance Weld-On Nuts
Weld-on nuts allow for quicker installation and/or removal of your chassis components. Allstar Performance steel weld-on nuts are a strong and easy way to bolt brackets and accessories to your chassis when the back side of a component is not accessible. They're offered in a variety of styles, lengths, and thread sizes to suit your application needs.
( 22 )
$9.99
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$14.99
Stef's Weld-In NPT Fittings
Stef's weld-in NPT fittings are designed for any oil return, drain, or other aluminum or steel application requiring an NPT fitting.
( 28 )
$4.99
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$9.99
Redhorse Performance 972 Series Weld-On Bungs
Plumbing your vehicle properly will use many different fittings. Redhorse Performance 972 Series weld-on bungs feature lightweight, unfinished raw aluminum construction, offering your project performance and style. RHP's 972 Series compact weld-on AN male adapters are available in several sizes. Choose the one or ones best suited to your task.
( 2 )
$6.04
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$15.26
Fragola Performance Systems Weld-In Bungs
Fragola Performance Systems has the weld-in bungs that you need for your project! Made from high-quality materials, these bungs are offered in a wide variety of sizes to suit your needs.
( 30 )
$3.99
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$30.99
Vintage Air Stainless Hardline Parts
Vintage Air offers these parts for use when plumbing your hardline cooling system. From fittings to nuts to adapters, Vintage Air has your hardline hardware needs covered.
( 8 )
$13.99
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$21.99
Racepak Weld-In Bungs
Racepak weld-in bungs offer quality made from steel and stainless steel. For EGT and air/fuel sensors, these weldments will create a place for your sensors and probes.
Not Yet Reviewed
$11.22
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$16.14
On Sale
Flowtech Weld-In O2 Sensor Bungs
Flowtech offers these weld-in O2 sensor bungs for custom installations. These high-quality emissions accessories work with your other Flowtech accessories to make your header installation a success.
( 6 )
$22.50
$20.25
Lowdoller Motorsports Weld-In Bung Fittings
Lowdoller Motorsports weld-in bung fittings offer superior durability, precision, and application versatility for custom fabrication in automotive and racing projects. Their product line includes options made from corrosion-resistant 316 stainless steel and lightweight 6061 billet aluminum, designed for robust and reliable connections. These bung fittings are designed for a permanent, high-strength attachment, which is a significant advantage over less-secure mounting methods. Select the bung fittings for your application.
Not Yet Reviewed
$4.99
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$10.99
Rhodes Race Cars Weld-In Bungs
Rhodes Race Cars weld-in bungs are for those who would rather build it than buy it. These quality RRC aluminum fittings are offered in multiple sizes to fit your fabricating needs. Whether it's a fuel cell, catch can, or oil tank, Rhodes Race Cars weld-in bungs will assist in your choice to do it yourself.
( 18 )
$2.99
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$8.99
DeatschWerks Weld-On Fittings
DeatschWerks gauge port plug fittings will help simplify your plumbing chore. They are offered in several AN sizes port, manufactured to applicable JIC and SAE standards, and are constructed of heat-treated 6061 aluminum or stainless steel. Choose the size and material you prefer. DeatschWerks plumbing components are backed by a lifetime warranty.
Not Yet Reviewed
$6.00
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$14.00
Moroso Weld-In Bungs
Moroso weld-in bungs are available in aluminum, steel, or stainless steel. They can be welded to valve covers, holding tanks, cylinder heads, oil pans, or wherever an NPT fitting is needed.
( 7 )
$12.99
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$166.99
Meziere Weld-In Fittings
Options are good. Meziere weld-in fittings offer many choices for your fabrication convenience. From a variety of AN and NPT sizes and styles, to a selection of fine materials—6061 aluminum, 4130 steel, or 303 stainless—Meziere delivers an assortment of quality weld-in fittings and bungs to make your project a success.
( 9 )
$15.72
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$27.54
ARP Weld Bungs
ARP offers these premium-quality weld-in bungs for a variety of uses. They're CNC-machined from 6061 solid aluminum billet or 1018 mild steel and are great for oil or fuel tanks, radiators, valve covers, manifolds, and rear axle housings. These bungs are available in your choice of sizes to suit your needs.
( 29 )
$11.99
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$36.99
Innovate Weld-In Bungs
Innovate Technology weld-in bungs are available in steel and stainless steel. They are also available in several sizes to suit your needs.
( 27 )
$8.99
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$12.99
