M18 X 1.5 Lambda Sensor Locking Screw Plug By HJS - Zinc-Plated Steel, Includes Seal Ring

Need to plug an unused O2 sensor port in your exhaust? This HJS locking screw is just the thing. It's new, made of zinc-plated steel, and includes a seal ring for a tight fit. The thread is M18 x 1.5, which is a common size for many lambda (oxygen) sensor holes. Part number is 82111437. Simply screw it into the empty bung on your catalytic converter or exhaust pipe to seal it off. Great for when you've removed a sensor for tuning, or if you're blocking off an extra port. It's a tuning/styling part and also considered a classic/Oldtimer part, so it's versatile. Installation is easy—just thread it in and torque it down. Prevents exhaust leaks and keeps things looking clean. A small but handy component for anyone working on their car's exhaust system.