Looking for the best stainless steel bung kits? We’ve got you covered with a curated list of top options to enhance your exhaust system projects.
Stainless steel bung kits are essential tools for anyone working on exhaust systems or custom projects. They offer durability and reliability, ensuring your work lasts in tough conditions. Whether you’re repairing or upgrading, these kits are a must-have for any garage.
From oxygen sensor bungs to universal fittings, there’s a kit for every need. Made from high-quality materials like 304 stainless steel, they resist rust and corrosion. Their easy installation saves time, making your projects smoother and more efficient.
Ready to find the perfect stainless steel bung kit? Let’s explore the best options to elevate your work and keep your projects running smoothly.
List of Top 10 Stainless Steel Bung Kits
| Image | Title | Best For | Price |
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joytrace M18x1.5 Oxygen Sensor Weld Bungs & Plugs Kit (2 Bungs/2 Plugs) – Stainless Steel Welding Adapters |
This kit is perfect for car owners and mechanics who need to fix or add oxygen sensor ports to their exhaust systems. It’s easy to weld and fits all standard sensors. |
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PQY Universal Stainless Steel E-VAC Scavenger Kit includes T304 SS E-VAC fitting |
This PQY Universal Stainless Steel E-VAC Scavenger Kit is perfect for car enthusiasts and DIY builders. It’s great for custom projects and improves engine performance. |
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2PCS M18x1.5 Sensor Bung,304 Stainless Steel Sensor Bung & Plug Kit with 2 Copper Spacer & Inner Hex Head,Step Thread Car Accessories for Motorcycle Car Truck Exhaust Systems |
This sensor bung and plug kit is perfect for car, truck, and motorcycle owners who want reliable, long-lasting exhaust system parts. It’s also great for mechanics needing easy-to-install, durable tools for quick repairs. |
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Walker Products WPA-105SS Stainless Steel Bung Kit, 1 Pack |
This Walker Products WPA-105SS Stainless Steel Bung Kit is perfect for busy technicians who need a reliable, time-saving solution. It’s also great for DIY enthusiasts looking for high-quality, USA-made parts. |
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joytrace M18x1.5 Oxygen Sensor Weld Bungs & Plugs Kit (5 Bungs/5 Plugs) – Stainless Steel Welding Adapters |
This kit is perfect for car owners and mechanics who need to fix or add oxygen sensors to their exhaust systems. It’s easy to weld and fits all standard sensors. |
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CNRAQR 3/8″ NPT Female Weld on Bung Weldable Fitting (OD 0.83″) with Top Head Flange (OD 1.07″) 304 Stainless Steel 4PCS |
This 3/8″ NPT Female Weld-on Bung Fitting is perfect for anyone working on custom projects like fuel tanks, intercooler piping, or oil pans. It’s great for high-precision, leak-proof installations in corrosive or industrial environments. |
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O2 Sensor Bung Weld in with Plug, 2 Set O2 Bung 304 Stainless Steel M18-1.5,Oxygen Sensor Bungs Plugs with Copper O-Ring for Automotive, Bike, Motocycle |
This O2 Sensor Bung Weld-in Set is perfect for car, bike, and motorcycle enthusiasts who want a reliable and durable solution for their oxygen sensor needs. It’s easy to install and built to last, making it ideal for anyone working on their vehicle. |
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O2 Sensor Bung Weld in with Plug, 4 Sets O2 Bung 304 Stainless Steel M18-1.5, Oxygen Sensor Bungs Plugs with Copper O-Ring, Exhaust Weld in Bung Plug for 1.5–2 Inch Pipe |
This O2 Sensor Bung Weld is perfect for car enthusiasts and DIY mechanics who want a reliable, easy-to-install solution for their exhaust systems. It’s ideal for 1.5–2 inch pipes and ensures a tight seal with its copper O-ring, making it great for high-performance vehicles. |
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Boost Monkey Weld in Oxygen Sensor O2 Bung Kit Wideband Stainless or Mild Steel (Stainless Steel Bung) |
This Boost Monkey Weld in Oxygen Sensor O2 Bung Kit is perfect for car enthusiasts who want to upgrade their vehicle’s performance. It’s ideal for wideband sensors and works with standard O2 bung threads. |
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Oxygen Sensor Bung and Plug Kit, 304 Stainless Steel Weld-On Bung with Carbon Steel Screw Plug, M18 x 1.5 Thread for Exhaust Fabrication(2 Pack) |
This Oxygen Sensor Bung and Plug Kit is perfect for car enthusiasts and DIY mechanics working on exhaust systems. It’s ideal for custom projects needing a reliable, corrosion-resistant solution. |
Detailed Reviews
Discover the top 10 Stainless Steel Bung Kits, expertly chosen for durability and performance. Each kit is reviewed for quality, ease of use, and value, ensuring you find the perfect fit for your needs. Whether for exhaust repairs or custom projects, this guide makes your choice simple and reliable.
1. joytrace M18x1.5 Oxygen Sensor Weld Bungs & Plugs Kit (2 Bungs/2 Plugs) – Stainless Steel Welding Adapters

The joytrace M18x1.5 Oxygen Sensor Weld Bungs & Plugs Kit is a must-have for exhaust repairs. It includes 2 bungs and 2 plugs, all made of stainless steel. This kit is built to last in tough conditions.
The bungs handle 1500°F heat and fit all standard O2 sensors. The plugs resist rust and corrosion. Both are easy to weld with no extra prep.
This kit is perfect for fixing damaged sensor ports. It also lets you add new monitoring points. Get a secure, long-lasting fit every time.
| Pros | Cons |
|---|---|
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Perfect For:
This kit is perfect for car owners and mechanics who need to fix or add oxygen sensor ports to their exhaust systems. It’s easy to weld and fits all standard sensors.
Ready to Purchase?
2. PQY Universal Stainless Steel E-VAC Scavenger Kit includes T304 SS E-VAC fitting

The PQY Universal Stainless Steel E-VAC Scavenger Kit is a high-quality upgrade for your engine. It’s made of T304 stainless steel, ensuring durability and performance.
This kit improves horsepower, reduces crankcase pressure, and includes all essential fittings for easy installation. Perfect for custom projects.
| Pros | Cons |
|---|---|
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Perfect For:
This PQY Universal Stainless Steel E-VAC Scavenger Kit is perfect for car enthusiasts and DIY builders. It’s great for custom projects and improves engine performance.
Ready to Purchase?
3. 2PCS M18x1.5 Sensor Bung,304 Stainless Steel Sensor Bung & Plug Kit with 2 Copper Spacer & Inner Hex Head,Step Thread Car Accessories for Motorcycle Car Truck Exhaust Systems

The M18x1.5 Sensor Bung Kit is a must-have for car, truck, and motorcycle exhaust systems. It includes 2 bungs, 2 plugs, and 2 copper spacers. Made of 304 stainless steel, it’s built to last.
The stepped thread design ensures a smooth, flush finish during welding. It’s easy to use and saves time and effort. The standard M18*1.5 size fits most mainstream sensors without modifications.
Installation is simple and quick. Just replace the old plug and tighten with a hex wrench. This kit is perfect for long-term use in demanding environments.
| Pros | Cons |
|---|---|
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Perfect For:
This sensor bung and plug kit is perfect for car, truck, and motorcycle owners who want reliable, long-lasting exhaust system parts. It’s also great for mechanics needing easy-to-install, durable tools for quick repairs.
Ready to Purchase?
4. Walker Products WPA-105SS Stainless Steel Bung Kit, 1 Pack

The Walker Products WPA-105SS Bung Kit is made in the USA. It includes six popular bungs for easy use. The kit is crafted from stainless steel, ensuring durability.
This kit comes with plugs, gaskets, and flanges. It saves technicians time with all essentials in one pack.
| Pros | Cons |
|---|---|
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Perfect For:
This Walker Products WPA-105SS Stainless Steel Bung Kit is perfect for busy technicians who need a reliable, time-saving solution. It’s also great for DIY enthusiasts looking for high-quality, USA-made parts.
Ready to Purchase?
5. joytrace M18x1.5 Oxygen Sensor Weld Bungs & Plugs Kit (5 Bungs/5 Plugs) – Stainless Steel Welding Adapters

The joytrace M18x1.5 Oxygen Sensor Weld Bungs & Plugs Kit is a must-have for exhaust repairs. It includes 5 bungs and 5 plugs made of stainless steel. This kit is built to last in tough conditions.
The universal M18x1.5 threads fit all standard O2 sensors. The 304 stainless steel bungs handle 1500°F heat easily.
The welding-ready design saves time with pre-beveled edges. The tapered base ensures a secure, long-term fit under vibration.
| Pros | Cons |
|---|---|
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Perfect For:
This kit is perfect for car owners and mechanics who need to fix or add oxygen sensors to their exhaust systems. It’s easy to weld and fits all standard sensors.
Ready to Purchase?
6. CNRAQR 3/8″ NPT Female Weld on Bung Weldable Fitting (OD 0.83″) with Top Head Flange (OD 1.07″) 304 Stainless Steel 4PCS

Upgrade your projects with the CNRAQR 3/8″ NPT Female Weld-on Bung Fitting. Made from 304 stainless steel, it’s built to last in tough conditions. Use it for fuel tanks, intercoolers, or custom reservoirs.
This fitting is CNC machined for precision and leak-proof performance. It comes with a two-month return service, so you’re covered if anything goes wrong.
| Pros | Cons |
|---|---|
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Perfect For:
This 3/8″ NPT Female Weld-on Bung Fitting is perfect for anyone working on custom projects like fuel tanks, intercooler piping, or oil pans. It’s great for high-precision, leak-proof installations in corrosive or industrial environments.
Ready to Purchase?
7. O2 Sensor Bung Weld in with Plug, 2 Set O2 Bung 304 Stainless Steel M18-1.5,Oxygen Sensor Bungs Plugs with Copper O-Ring for Automotive, Bike, Motocycle

Upgrade your vehicle with the O2 Sensor Bung Weld-in Set. Made from 304 stainless steel, it resists rust and lasts long. Perfect for cars, bikes, and motorcycles.
The M18-1.5 thread design fits most sensors easily. The copper O-ring ensures a tight seal, even in high heat.
Each set includes 2 bungs, 2 plugs, and 2 O-rings. Welding is simple, making installation quick and reliable.
| Pros | Cons |
|---|---|
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Perfect For:
This O2 Sensor Bung Weld-in Set is perfect for car, bike, and motorcycle enthusiasts who want a reliable and durable solution for their oxygen sensor needs. It’s easy to install and built to last, making it ideal for anyone working on their vehicle.
Ready to Purchase?
8. O2 Sensor Bung Weld in with Plug, 4 Sets O2 Bung 304 Stainless Steel M18-1.5, Oxygen Sensor Bungs Plugs with Copper O-Ring, Exhaust Weld in Bung Plug for 1.5–2 Inch Pipe

Upgrade your exhaust system with the O2 Sensor Bung Weld-in Kit. This kit includes four sets of bungs and plugs, designed for a perfect fit on 1.5–2 inch pipes. The curvature matches your exhaust, ensuring a clean, precise weld.
Made from 304 stainless steel, these bungs are built to last. They resist corrosion and handle high temperatures with ease. The M18 x1.5 threads fit standard sensors, making installation simple and secure.
Each kit comes with copper O-rings for a tight seal. The high-quality materials ensure long-lasting performance. Perfect for any exhaust project, this kit delivers reliability and durability.
| Pros | Cons |
|---|---|
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Perfect For:
This O2 Sensor Bung Weld is perfect for car enthusiasts and DIY mechanics who want a reliable, easy-to-install solution for their exhaust systems. It’s ideal for 1.5–2 inch pipes and ensures a tight seal with its copper O-ring, making it great for high-performance vehicles.
Ready to Purchase?
9. Boost Monkey Weld in Oxygen Sensor O2 Bung Kit Wideband Stainless or Mild Steel (Stainless Steel Bung)

The Boost Monkey Weld is a must-have for car lovers. It works well with wideband sensors. This kit is strong and reliable.
It has a standard 18mm x 1.5 thread for easy fitting. You can choose stainless or mild steel to match your needs.
The O2 Bung Kit is perfect for your car. It is simple to use and built to last. Get yours today!
| Pros | Cons |
|---|---|
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Perfect For:
This Boost Monkey Weld in Oxygen Sensor O2 Bung Kit is perfect for car enthusiasts who want to upgrade their vehicle’s performance. It’s ideal for wideband sensors and works with standard O2 bung threads.
Ready to Purchase?
10. Oxygen Sensor Bung and Plug Kit, 304 Stainless Steel Weld-On Bung with Carbon Steel Screw Plug, M18 x 1.5 Thread for Exhaust Fabrication(2 Pack)

This Oxygen Sensor Bung and Plug Kit is built to last. Made from 304 stainless steel, the bung resists rust and heat. It’s perfect for exhaust projects.
The carbon steel plug seals tightly when not in use. Both pieces are easy to install and fit M18 x 1.5 threads smoothly.
| Pros | Cons |
|---|---|
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Perfect For:
This Oxygen Sensor Bung and Plug Kit is perfect for car enthusiasts and DIY mechanics working on exhaust systems. It’s ideal for custom projects needing a reliable, corrosion-resistant solution.
Ready to Purchase?
Buying Guide
Stainless steel bung kits are essential tools for exhaust systems and custom projects. They offer durability and reliability, making your work last in tough conditions.
When choosing the best stainless steel bung kit, consider these key factors:
- Material Quality: Look for 304 stainless steel for rust and corrosion resistance. It ensures long-lasting performance in harsh environments.
- Thread Size: Check the thread size (e.g., M18x1.5) to ensure compatibility with your sensors or fittings. A standard size saves time and effort.
- Kit Contents: Some kits include bungs, plugs, spacers, or O-rings. Choose one with all the essentials for your project.
- Heat Resistance: For exhaust systems, pick bungs that handle high temperatures (e.g., 1500°F). This ensures safety and durability.
- Ease of Installation: Look for kits with pre-beveled edges or stepped threads for smooth welding and quick installation.
- Versatility: Universal kits work for cars, trucks, motorcycles, or custom projects. Choose one that fits your needs.
- Brand Reputation: Trusted brands like joytrace, PQY, and Walker Products offer reliable and high-quality kits.
- Price and Value: Compare prices and features to find the best value for your budget.
With these factors in mind, you’ll find the perfect stainless steel bung kit to elevate your projects and ensure long-term success.