Oxygen Sensor Weld Bung

Every header, downpipe and custom exhaust needs somewhere to mount the oxygen sensors, and a wideband gauge for tuning needs one more. Vibrant's 1194 is the standard weld-on bung for that job, machined from T304 stainless with the M18x1.5 thread that fits nearly every automotive narrowband and wideband sensor. This is a bulk pack of five, which covers a dual exhaust with pre- and post-cat sensors plus a spare for a wideband.

Specifications

• Part number: Vibrant 1194
• Material: T304 stainless steel
• Thread: M18x1.5
• Style: standard height, weld-on
• Quantity: bulk pack of 5
• Warranty: 1-year limited

Placement and Welding

Mount the bung on the top half of the pipe, ideally between the 10 and 2 o'clock positions, so condensation drains away from the sensor tip. Drill or hole-saw the pipe to the bung's outer diameter, set the bung flush, and tack it before welding all the way around. Thread an old sensor or a 1195 plug into the bung while you weld to keep spatter and heat distortion out of the threads.

Stainless Versus Mild Steel

Choose this T304 version when welding to stainless tubing so you are not mixing metals, and for any exhaust where corrosion resistance matters. For mild steel exhaust, Vibrant makes the same bung in mild steel as part 1194A.

Frequently Asked Questions

Will this fit a wideband sensor?

Yes. Common wideband sensors such as the Bosch LSU 4.9 use the M18x1.5 thread.

Do you sell a plug for unused bungs?

Vibrant's 1195 is a matching plug for capping a bung you are not using.

Should I use anti-seize?

Use an anti-seize rated for oxygen sensors on the sensor threads. Most new sensors come with it already applied.

Fitment: Universal. Confirm the sizes and thread types listed above against your application before ordering.