O2 Blanking Plugs Size?

[will866_imp]

Does anyone happen to know the size of the blanking plug that goes in the hole left when one removes the O2 sensors from a 2014 DLX exhaust? It seems that one of mine has popped out and now the exhaust sounds like a harley (woob, woob, woob.....not good). Vance and Hines sells 3 sizes (10mm, 12mm, and 18mm). Or better yet, if anyone has extras, let me know.

Thanks

 

[Lord Popgun]

In the service manual, it says thread dia. 12mm

 

[will866_imp]

In the service manual, it says thread dia. 12mm

Thank you. Much appreciated. I need to get a service manual and Clymers guide too.