Anyone got any suggestions as to where I can try to get a 20mm cup type core plug please.
Thanks in advance

Motor factors usually do a card of differnt sizes for not much money. Failing that ask around your local garage. Someone might have one kicking about for a beer token.

You can get a purpose made set for your engine - it will cost pennies.

Any motor factors will get it for you.

Hi - Sorry this is my other login. Had password problems in work today so reregistered to post above.
Thanks for the responses. I can get a set for my engine but it won't have the 20mm one in. This is to remove and blank off the heater outlet.
Cheers

on my vauxhall i used a bit of ally plate that I cut down to size and knocked in with some thread lock on it and it didn't come out when i mapped/rolling roaded the car...

Ned.