These plugs worked great for rebuilding my Holley 1904. I also ordered a kit for this carburetor from Mike, Mike was very helpful in making sure he answered any questions, and assuring I received the correct kits and parts for my carburetor. I will be using them from now on for any carb needs. Highly recommend these plugs, and would highly recommend these people for any carburetor needs.
Reviewed by: Tony Huguley from Michigan on 10/27/2015