2x O2 Sliver Oxygen Sensor Extender Spacer Lambda Sensor M18 x1.5 Bung OBD2 02 | eBay https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com.au%2Fulk%2Fitm%2F183788581084 <li> Brand new. Universal For Any Thread Size Of 18mm Threads made with dedicated tool - perfect accuracy and repeatability. Polished front surfaces enabling perfect tightening. Material Metal Color Silver Internal and External Thread M18x1.5 Size Approx. 38 x 24mm Brand Unbranded/Generic MPN BC095509662163 Manufacturer Part Number Does not apply EAN 0095509662163</li>.