Thumbnail Filmstrip of Holley Oxygen Sensor O2 Bung Weld-In Style Images
Oxygen Sensor O2 bung weld in style used for any Application that utilizes an Oxygen Sensor
Requires welding and a 7/8" hole to be drilled into the exhaust. Oxygen sensors need to mounted with the tip pointed on a downward angle. A minimum of 10 degrees from horizontal and 15 degrees from perpendicular is recommended.