joytrace O2 Sensor Weld Bungs & Plugs Kit M18x1.5 — 5 Bungs/5 Plugs, 304 Stainless, Pre-Beveled

joytrace M18x1.5 Oxygen Sensor Weld Bungs & Plugs Kit supplies five ready-to-weld O2 sensor bungs and five corrosion-resistant plugs for repairing or adding sensor ports on exhaust systems.

Whether you're fixing a stripped sensor boss or installing extra monitoring points, this kit provides the threaded fittings and caps needed to restore proper O2 sensor mounting. Each welded bung uses common M18x1.5 threads so standard Bosch/Denso/NTK/OEM sensors thread in securely, while the plugs keep unused ports sealed and protected until needed.

How do these bungs fit standard oxygen sensors?

The bungs are manufactured with M18x1.5 threads, the industry standard for most automotive O2 sensors. That means compatible sensors from Bosch, Denso, NTK and original equipment suppliers will screw in without adapters. The tapered base and laser-cut thread profile help maintain a tight, vibration-resistant seat after welding.

• M18x1.5 threads for broad sensor compatibility
• Laser-cut threads for precise engagement
• Tapered base to prevent loosening under vibration

Can these parts stand up to exhaust heat and corrosion?

The bungs are made from 304 stainless steel, designed to tolerate elevated exhaust temperatures and resist scaling. Plugs are zinc-plated mild steel for rust resistance in storage or temporary use. Together they provide a durable, serviceable solution for exhaust repairs and sensor additions.

• 304 stainless bungs rated for high-temperature exposure
• Zinc-plated plugs for corrosion protection
• Materials chosen for long service life in exhaust environments

Are these parts ready for welding, and what welding methods work best?

Yes — the bungs arrive pre-beveled with smooth weld surfaces so you can TIG or MIG weld them directly into the exhaust pipe without grinding first. The chamfered edge promotes consistent penetration and reduces prep time. For best results, tack the bung, check alignment, then complete the circumferential weld in a single pass or controlled multi-pass sequence.

• Pre-beveled edges for immediate TIG or MIG welding
• Smooth surface finish to reduce pre-weld grinding
• Fits common exhaust tube gauges and geometries with standard welding practice

What installation benefits help the repair hold up over time?

Design features like the tapered base and precision-cut threads reduce the chance of the bung loosening from vibration or thermal cycling. The kit also provides matching plugs to seal unused ports and prevent exhaust leakage until sensors are installed. This combination simplifies repairs and helps maintain exhaust-sensor integrity for long-term performance.

• Tapered base secures the bung under vibration
• Precision threads resist stripping and loosening
• Included plugs keep unused ports sealed and protected

Who is this for: The joytrace M18x1.5 Oxygen Sensor Weld Bungs & Plugs Kit is made for professional exhaust shops, motorsport fabricators, and DIY mechanics who need to repair damaged O2 sensor ports or add monitoring locations. If you work on gasoline or performance exhaust systems and prefer ready-to-weld, corrosion-conscious fittings that match common O2 sensor threads, this kit streamlines the job and reduces rework.