Speedmaster Oxygen Sensor Bung

Speedmaster Oxygen Sensor Bungs: No-Weld Precision for Your Exhaust System

When building or modifying a performance exhaust system, getting your oxygen sensor mounted correctly is just as critical as the pipes themselves. Speedmaster — the globally recognized performance parts brand born from Pete's Performance in 1979 — brings that same engineering mindset to its oxygen sensor bung lineup, offering a practical, high-quality solution for enthusiasts and professionals alike.

The Speedmaster PCE639.1001 Clamp-On O2 Sensor Bung Kit

Speedmaster's flagship offering in this category is the PCE639.1001 Clamp-On O2 Oxygen Sensor Bung Stainless Steel Assembly Kit. This kit is engineered around a key advantage: no welding required. That single design decision opens the door for a much wider range of installers — from the seasoned fabricator to the weekend garage builder — to properly position an oxygen sensor anywhere along the exhaust system.

• Thread Size: Industry-standard 18mm x 1.5, compatible with the vast majority of O2 sensors on the market
• Clamp Style: Band clamp design secures firmly around exhaust tubing without the need for a welder
• Material: Stainless steel construction throughout for heat resistance and long-term corrosion protection
• Complete Kit: Sold as a full assembly including the bung, a gasket, and two stainless band clamps — everything you need in one box

Why the Clamp-On Design Matters

Traditional weld-on bungs demand access to welding equipment and a certain level of skill to avoid damaging the exhaust pipe or creating an imperfect seal. Speedmaster's clamp-on approach sidesteps those challenges entirely. The band clamp system grips the exhaust tubing securely, while the included gasket ensures a leak-free seal around the bung. This makes the PCE639.1001 especially well-suited for retrofitting sensors onto existing exhaust systems, whether you're adding a wideband O2 sensor for tuning, adapting an EFI conversion, or simply replacing a damaged bung without cutting into your exhaust.

Speedmaster's Performance Pedigree

Speedmaster has grown from a small speed shop into a global performance parts powerhouse with distribution and operations across multiple continents. That heritage of high-performance engineering — visible across their headers, engine internals, and exhaust components — carries directly into even their smaller hardware offerings like the O2 sensor bung kit. The PCE product line reflects Speedmaster's commitment to delivering parts that work right the first time, without requiring specialized tools or professional fabrication skills.

Whether you're tuning a carbureted build, integrating a standalone EFI system, or monitoring exhaust gases on a street or track vehicle, the right oxygen sensor bung is the foundation of accurate sensor data. Speedmaster's stainless clamp-on kit delivers that foundation cleanly and confidently.