Innovate Motorsports 3736 Stainless Steel Exhaust Bung and Plug Kit<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Standard size used in all O2 sensors</li><li>Stainless-Steel Bung and Plug</li><li>1/2 inch tall， thread 18mm x 125</li></ul></div><img src="http://ecx.images-amazon.com/images/I/410axn-Qi2L.jpg" noproxy>