Oxygen sensor bungs, often overlooked but critically important, serve as the dedicated mounting point for O2 sensors in exhaust systems. Our stainless steel oxygen sensor bungs are engineered to provide precise fitment, reliable weld integrity, and long-term durability in high-heat, corrosive environments. Designed with B2B applications in mind—whether for exhaust system manufacturers, performance tuners, or engine test setups—each bung is CNC-machined with strict dimensional tolerances to ensure consistent sensor readings and system compatibility.
Oxygen sensor bungs are widely used across automotive manufacturing, aftermarket exhaust fabrication, and industrial engine platforms. They are essential wherever exhaust gas composition needs to be measured, especially for emission control and fuel efficiency management. Our bungs are commonly integrated into downpipes, headers, catalytic converters, or custom exhaust tubing.
We support a variety of use cases: OEM replacement, race-only performance builds, off-road vehicle upgrades, or even industrial generators that require sensor integration. Our ability to supply bulk quantities with consistent specifications makes us a reliable partner for system integrators and exhaust system builders.
The key advantage of our oxygen sensor bungs lies in their robust material and precise thread engagement. Constructed from corrosion-resistant stainless steel such as T304 or T316, these bungs withstand exposure to extreme exhaust temperatures and chemical contaminants.
Threaded to the industry-standard M18x1.5 or M12x1.25, they ensure compatibility with most universal and OEM oxygen sensors. Our CNC machining process ensures every piece maintains tight tolerances for thread pitch and internal depth—critical for sensor accuracy and lifespan.
Each bung is weld-ready, with clean surfaces and uniform wall thickness that support MIG or TIG welding without warping. We also offer options with pre-cut chamfered edges for ease of integration into curved pipe surfaces. These functional design details help minimize installation time, reduce sensor failure rates, and improve system diagnostics accuracy over time.
For clients focused on emissions compliance or tuning precision, reliable sensor placement directly impacts fuel mapping and performance. Our bungs offer the structural integrity needed to maintain leak-free, stable sensor readings across long-term use cycles.
| Specification | Detail |
|---|---|
| Material | T304 / T316 Stainless Steel / Mild steel |
| Thread Size | M18x1.5 (Standard) / M12x1.25 (Optional) |
| Outer Diameter | 20mm – 25mm (customizable) |
| Total Length | 12mm – 25mm (based on client spec) |
| Machining Tolerance | ±0.05mm |
| Surface Finish | Raw, Brushed, or Polished |
| Welding Compatibility | TIG / MIG Ready |
| Operating Temperature | Up to 1000°C |
| OEM Compatibility | Universal or Platform-Specific Available |
| MOQ | 100 pieces per spec (negotiable for OEMs) |
Q1: Are these oxygen sensor bungs compatible with all O2 sensors?
Our standard bungs use M18x1.5 threading, which is compatible with most automotive oxygen sensors. We also offer M12 variants for specific vehicle applications.
Q2: Can I get customized sensor bungs for my specific exhaust layout?
Yes. We support customized bung lengths, diameters, threading specifications, and even slanted flange angles for integration into curved pipes or tight spaces.
Q3: What's the minimum order quantity for B2B clients?
Our general MOQ is 100 pcs per specification. However, for larger OEM or ongoing projects, we can offer flexible terms and scheduled delivery.
Q4: Are these suitable for high-performance or racing vehicles?
Yes. The material and machining standards meet the demands of high-temp, high-stress applications found in turbocharged or racing setups.
Q5: Do you include caps or plugs with the bungs?
Optional sensor plug sets can be included upon request for applications where bungs are welded but sensors are not yet installed.
We serve B2B clients across the automotive manufacturing, tuning, and industrial sectors. With scalable production capabilities and strict quality control, we ensure consistency across batches, timely delivery, and dedicated support.
Our engineering team is available to assist with technical drawings, integration support, and prototype sampling. We welcome inquiries from exhaust system manufacturers, engine builders, tuning brands, or distributors seeking reliable sensor bung solutions in bulk.