Bungs - O2 Sensor Bungs
The Oxygen Sensor Bungs category at Ace Race Parts includes a wide selection of precision-machined weld-in bungs designed for accurate and reliable oxygen sensor installation across a variety of applications. These bungs are commonly used in exhaust fabrication to accommodate wideband and narrowband O2 sensors for tuning, monitoring, and engine management.
Manufactured from high-quality materials including aluminum, mild steel, stainless steel, and titanium, each bung is CNC machined from solid bar stock to ensure consistent thread accuracy and proper sensor fitment. Available in common metric sizes such as M12 x 1.25 and M18 x 1.5, these bungs are designed to support a wide range of sensor types and configurations.
Each oxygen sensor bung is thoroughly cleaned and individually packaged to maintain cleanliness and thread integrity prior to installation. With multiple material options, sizes, and thread pitches available, these bungs provide the flexibility needed for custom exhaust fabrication across automotive, motorsport, marine, and industrial applications.
Whether you’re adding sensor provisions to a new exhaust system or modifying an existing setup, these weld-in bungs offer a reliable solution for proper sensor placement and long-term durability.
Read LessM12 x 1.25 O2 Sensor Bung - Coped for 1.500"-2.500" OD Tube - 304 Stainless
304 STAINLESS STEEL O2 SENSOR BUNG — M12 X 1.25 THREAD The Ace Race Parts brand of metric Oxygen (O2) Sensor Bungs is precision machined using soli...
View full detailsM18 x 1.5 O2 Sensor Bung - Stepped (Flat Bottom) - 304 Stainless
304 STAINLESS STEEL O2 SENSOR BUNG — M18 X 1.5 THREAD The Ace Race Parts brand of metric Oxygen (O2) Sensor Bungs is precision machined using solid...
View full detailsM18 x 1.5 O2 Sensor Bung - Stepped (Flat Bottom) - Mild Steel
MILD STEEL O2 SENSOR BUNG — M18 X 1.5 THREAD The Ace Race Parts brand of metric Oxygen (O2) Sensor Bungs is precision machined using solid 1018 Mil...
View full detailsM18 x 1.5 O2 Sensor Bung - Stepped (Flat Bottom) - 6061 Aluminum
6061-T6 ALUMINUM O2 SENSOR BUNG — M18 X 1.5 THREAD The Ace Race Parts brand of metric Oxygen (O2) Sensor Bungs is precision machined using solid 60...
View full detailsM18 x 1.5 O2 Sensor Bung - Saddled for 1.500"-2.500" OD Tube - 304 Stainless
304 STAINLESS STEEL O2 SENSOR BUNG — M18 X 1.5 THREAD The Ace Race Parts brand of metric Oxygen (O2) Sensor Bungs is precision machined using solid...
View full detailsM18 x 1.5 O2 Sensor Bung - Coped for 1.500"-2.500" OD Tube - Mild Steel
1018 MILD STEEL O2 SENSOR BUNG — M18 X 1.5 THREAD The Ace Race Parts brand of metric Oxygen (O2) Sensor Bungs is precision machined using solid 101...
View full detailsM18 x 1.5 O2 Sensor Bung - Coped for 3.000"-5.000" OD Tube - 304 Stainless
304 STAINLESS STEEL O2 SENSOR BUNG — M18 X 1.5 THREAD The Ace Race Parts brand of metric Oxygen (O2) Sensor Bungs is precision machined using solid...
View full detailsM18 x 1.5 O2 Sensor Bung - Heat Sink Style - 304 Stainless
EXTEND THE LIFE OF YOUR WIDEBAND O2 SENSOR! Our O2 Sensor Heat Sink Bungs are precision machined using solid 304 Stainless Steel bar stock and work...
View full detailsM18 x 1.5 O2 Sensor Bung 45° Angle Cut - 304 Stainless
The Ace Race Parts brand of metric Oxygen (O2) Sensor Bungs are precision machined using solid 304 Stainless Steel bar stock and work with all stan...
View full detailsM12 x 1.25 O2 Sensor Bung Plug - Mild Steel
The Ace Race Parts brand of metric Oxygen (O2) Sensor Bung Plugs are precision machined using 1018 Mild Steel and work with all standard O2 Sensor ...
View full detailsM18 x 1.5 O2 Sensor Bung Plug - Mild Steel
The Ace Race Parts brand of metric Oxygen (O2) Sensor Bung Plugs are precision machined using 1018 Mild Steel and work with all standard O2 Sensor ...
View full detailsM12 x 1.25 O2 Sensor Bung Plug - 6AL4V Grade 5 Titanium
6AL4V GRADE 5 TITANIUM O2 SENSOR BUNG PLUG — M12 X 1.25 THREAD The Ace Race Parts brand of metric Oxygen (O2) Sensor Bung Plugs is precision machin...
View full detailsM18 x 1.5 O2 Sensor Bung Plug - 6AL4V Grade 5 Titanium
6AL4V GRADE 5 TITANIUM O2 SENSOR BUNG PLUG — M18 X 1.5 THREAD The Ace Race Parts brand of metric Oxygen (O2) Sensor Bung Plugs is precision machine...
View full detailsM12 x 1.25 O2 Sensor Bung - Coped for 1.500"-2.500" OD Tube - 6AL4V Grade 5 Titanium
6AL4V GRADE 5 TITANIUM O2 SENSOR BUNG — M12 X 1.25 THREAD The Ace Race Parts brand of metric Oxygen (O2) Sensor Bungs is precision machined using s...
View full detailsM18 x 1.5 O2 Sensor Bung - Coped for 1.500"-2.500" OD Tube - CP2 Titanium
CP2 TITANIUM O2 SENSOR BUNG — M18 X 1.5 THREAD The Ace Race Parts brand of metric Oxygen (O2) Sensor Bungs is precision machined using solid CP2 Ti...
View full detailsM18 x 1.5 O2 Sensor Bung - Coped for 3.000"-5.000" OD Tube - CP2 Titanium
CP2 TITANIUM O2 SENSOR BUNG — M18 X 1.5 THREAD The Ace Race Parts brand of metric Oxygen (O2) Sensor Bungs is precision machined using solid CP2 Ti...
View full detailsM18 x 1.5 O2 Sensor Bung - Heat Sink Style - 6AL4V Grade 5 Titanium
EXTEND THE LIFE OF YOUR WIDEBAND O2 SENSOR! Our O2 Sensor Heat Sink Bungs are precision machined using solid 6AL-4V Grade 5 Titanium bar stock and ...
View full detailsM18 x 1.5 O2 Sensor Bung - Saddle Style - CP2 Titanium
CP2 TITANIUM O2 SENSOR BUNG — M18 X 1.5 THREAD — SADDLE STYLE The Ace Race Parts brand of metric Oxygen (O2) Sensor Bungs is precision machined usi...
View full detailsVibrant "J" Style M18 x 1.5 Oxygen Sensor Weld On Bung 304 Stainless (1192)
• A very effective tool for avoiding Check Engine Lights. Pulls the Oxygen Sensor further away from the exhaust gas stream.• The "J" shape allows t...
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