Master Cylinder to Power Booster retainer Seal

[Dick Bottis]

I have a 69 Corvette with power brakes, I sent the master cylinder out to be rebuilt and not knowing I sent the gasket and retainer seal that mates the MC and booster. The place where I sent the booster to remembers it but can not locate it or have lost it. I have looked through numerous catalogs trying to locate these parts and have not been able to locate them Does know where I might be able to get them?

The parts are located in the 69 ASM page J355 UPC J56

Item 8 gasket part # 730392
Item 9 retainer Seal part # 9787620

Any help would be appreciated.

[Joe L.]

Re: Master Cylinder to Power Booster retainer Seal

Dick------

Both of the parts that you described are GM-discontinued and have been for quite some time. The GM #9787620 is a retainer. You may be able to find one of these from used parts sources or, even, an NOS example here-and-there. They are not unique to Corvettes and can be found on most 68-70 full size Chevrolets and Chevelles with power brakes as well as all 62-69 Chevrolets with Bendix power brakes.

The GM #730392 seal is another matter. It's not reproduced as far as I know. Also, it's unique to Corvettes.