Exoracing O2 Lambda Sensor Adapter Weld In Nut M18x1.5 Stainless Steel

A stainless steel weld-in nut that is designed to add an M18x1.5 sensor port to stainless exhaust pipework. The M18x1.5 thread is the common thread used by many narrowband and wideband oxygen sensors, and the body is machined from 304 stainless steel with a collar on the outer face.

• M18x1.5 thread, the common thread used by many narrowband and wideband oxygen sensors, so check the thread on your own sensor against this specification.
• Machined from 304 stainless steel, with a total height of 13mm and a weight of 20g.
• The main body measures 22mm in outer diameter, rising to 24.5mm across the machined collar, which is 7mm tall.
• Exoracing state that the machined collar helps the adapter sit neatly in the drilled hole before welding.
• Supplied as one weld-in sensor nut, and it can be used to replace a damaged sensor boss when correctly fabricated.

Check before you order

• The buyer should confirm their sensor thread is M18x1.5 before ordering
• Being 304 stainless steel, the adapter is best suited to stainless exhaust fabrication

Specifications from Exoracing

Fitting notes from Exoracing

• Recommended drill hole: A 22mm or 23mm hole should be drilled before welding
• Welding required: The part must be welded into the exhaust
• Professional installation: A professional welder should be used if the buyer is not confident fabricating stainless exhaust parts; professional welding is recommended
• Fitting the adapter: The adapter is placed into the hole with the machined collar sitting on the outside of the pipework, then welded around fully and allowed to cool
• Sensor angle: The sensor manufacturer's recommended sensor angle and position should be checked before drilling, as wideband sensors often need a specific angle to avoid moisture damage and poor readings
• Access: Enough space should be left to install, remove and service the sensor after welding
• Test fitting: The M18x1.5 sensor should be test-fitted once cool and the threads checked as clean before final installation

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