M18x1.5 Oxygen Sensor Bung Weld Nut Plug Kit | Stainless Steel
M18x1.5 Oxygen Sensor Bung Weld Nut Plug Kit | Stainless Steel
M18x1.5 Stainless Steel Oxygen Sensor Bung Weld Nut & Plug Kit
Install or relocate an oxygen sensor exactly where you need it with this heavy-duty M18x1.5 stainless steel oxygen sensor bung, weld nut, and plug kit. Built for custom exhaust fabrication, this universal fitting makes sensor installation on headers, downpipes, exhaust pipes, and custom exhaust systems quick and straightforward — no specialist tools required.
Made in Mainland China.
Key Features
- Universal Fit: Compatible with any standard 18mm exhaust pipe — suits virtually all M18x1.5 threaded oxygen sensor applications.
- Complete Kit: Includes weld bung, M18x1.5 nut, and plug cover — everything you need for a clean, professional installation.
- Stainless Steel Construction: Corrosion-resistant and heat-tolerant stainless steel ensures long-lasting durability in high-temperature exhaust environments.
- Easy Installation: Designed to streamline weld-in oxygen sensor fitting, saving time during custom exhaust builds or sensor upgrades.
- Ideal for Custom Builds: Perfect for installing wideband or narrowband oxygen sensors on custom exhaust headers, downpipes, cat-back systems, and more.
- Plug Included: The integrated plug allows you to cap off unused bung ports cleanly, preventing leaks when the sensor position is not in use.
Specifications
- Thread Size: M18 x 1.5
- Material: Stainless Steel (silver-plated iron thread compatible)
- Package Includes: 1 × Oxygen Sensor Bung Weld Nut & Plug Set
- Color: As shown in product images
Note: Please allow a 2–5% dimensional variance due to manual measurement. Actual color may vary slightly from product images depending on screen calibration and lighting conditions.
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Frequently Asked Questions
Q: What thread size is this oxygen sensor bung?
A: This weld bung uses the standard M18 x 1.5 thread pitch, which is the universal thread size for most automotive oxygen sensors — both wideband and narrowband types.
Q: Is this kit suitable for stainless steel exhaust systems?
A: Yes. The bung and nut are made from stainless steel, making them fully compatible with stainless steel exhaust systems as well as mild steel pipes. The silver-plated iron thread ensures a secure, heat-resistant weld and connection.
Q: Can I use this bung to cap off an unused sensor port?
A: Absolutely. The kit includes a plug cover specifically designed to seal the bung port when an oxygen sensor is not installed, preventing exhaust leaks at unused ports on custom exhaust setups.
Q: Is this kit suitable for custom exhaust builds?
A: Yes — this bung kit is ideal for custom headers, downpipes, cat-back exhausts, and any fabrication project where you need to add or relocate an oxygen sensor position on your exhaust system.