I understand that this is a special order item which is not in stock and will require an extended period of time for shipping
Stainless Bros M18x1.5 O2 Sensor Bung Step Type
Stainless Bros M18x1.5 O2 Sensor Bung 1.75in to 2.50in Tubing
AEM O2 Sensor Bung Plug Kit
Vibrant Stainless Steel Weld Fitting w/ O-Rings for 5in OD Tubing
Ticon Industries Chill Block M18 O2 Bung