Lambda sensor weld-in boss (M18 x 1.5mm mild steel)

Description A mild steel lambda/oxygen/wideband boss for welding into your exhaust system. M18 x 1.5mm thread to accept the common Bosch wideband sensors and most other lambda sensors including most factory narrow-band sensors. 25mm wide x 12mm tall. Stainless steel ones are available in a separate listing.