11001190 - Weld on Oxygen Sensor Bung and Plug Set
                       High quality Stainless-steel weld on bung, plug & washer


11001191 - Weld on Oxygen Sensor Bung
                      High quality Stainless-steel, weld on Oxygen Sensor bung
                    25mm Outer Diameter x Height 12mm - M18x1.5 Threads

11001192 - Oxygen Sensor Plug 
                      High quality Stainless-steel Oxygen Sensor Plug bolt
                     and crush washer 
                    22mm dia head, Height 15mm - M18x1.5 Threads
                    req. 10mm Allen wrench