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We are rebuilding this brake booster unit and have located the Bragg Kliesrath brake valve diaphragm, but have not found a Bragg Kliesrath brake Valve bellows part #J 4904-7. Diaphragm was located at Classic & Exotic Services but can anyone suggest another vendor for the bellows? Many thanks!

I don't have my B-K parts list handy so I don't recognize just what B-K J-4904-7 is, but if you are referring to the control valve rubber boot, Packard P/N 202916, it's available from Steele Rubber as #30-0426-24.

Can you post a picture of the old part? Brian at C&E is THE source for B-K parts so if he doesn't have it and it's not the Steele part referenced, I suspect you're going to have to adapt something or make it yourself.

Thanks, MR. Ambassador. Part needed has been ordered from Steele Rubber. R.