Berk TechnologyBTO2-Plug Universal Stainless Steel O2 Bung Plug Fitting M18x1.5-17mm Head

Perfect fit to block off hole from O2 sensor removal

Another Berk Technology Five Star product! Being able to purchase quality automotive parts in the most trusted brands from the comfort of home is wonderful. Item arrived ahead of schedule, was packaged securely, and as usual Amazon delivers the items to my front door at about half the price of local retailers!This is a product that I feel comfortable in my buying decision, would purchase again if needed, and would recommend to other consumers without hesitation.Needed a new plug for dyno runs!

Exactly as described. Comes in small plastic packing and sports a 17mm head which is far easier to use and less likely to strip than the plugs with internal wrenching.Used for plugging an O2 port on my ls1 swap as Holley EFI kit only uses one bank for it's sensor.

Nice high quality piece, big hex head can be easier to remove later depending on application & the amount of room surrounding it.Plug is helpful to block off the unused O2 port when using a wideband O2 gauge on a V8 and you want the option to move the sensor back and forth between banks.

Ordered these to plug my collectors when the sensors are out. What I received is LAUGHABLE! 1) not exactly sure what size theses are suppose to be? One seems to be 19mm the other seems to be 3/4” neither fits either size what I’d describe as correctly. 2) They’re obviously from two different manufactures. Neither is of any kind of quality. 3) The one with more threads and the thinner head has the threads beat up badly. 4) the one with fewer threads (as I count 2.5 usable threads) is ridiculous 5) the flank of the threads is differ from on to the other. I could keep going on, but why bother. You get the idea.... junk! Why waste my time being ignored by this seller? Consider it my lesson learned and fair warning to you.

Good, but if purge gas shielding your exhaust while welding, make sure to use nickel-based antiseize on the threads.

Nice fit .......no issues

Not much to say other than it works as described and fits a standard narrowband and wideband O2 sensor bung. I removed one sensor, so i used this to cap the O2 bung.