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MG MGA - New SU mounting bolt size?

Does anyone know the mounting bolt size for the new electronic SU pumps? It's not 1/4-20 or 1/4-28. M6 threads in OK, but the bolt is very loose in the threads.
Mark J Michalak

When I fitted mine, I re-used the bolts from fitting the old one - no problem at all.

If you have a problem with the threads, run a tap through them.
dominic clancy

Mark - It is 1/4 BSF (British Standard Fine). Moss carries the correct bolts, but you may have to go to the T series catalog to find them. If all else fails, contact me at SUfuelpumps@donobi.net, I probably have some used one rattling around. Cheers - Dave
David DuBois

I haven't had an original fuel pump on the car in nine years. Thanks
Mark J Michalak

This thread was discussed on 05/04/2009

MG MGA index

This thread is from the archive. The Live MG MGA BBS is active now.