RPO 684 Rear Brake cylinders..Original or not???

[Justin B.]

I have the brake cylinders off of my big brake C1...they both have the part #5456 400-1 on the left and right sides. The brake line to brake cylinder attachment holes are opposite of each other. Neither say Delco Moraine unlike my original fronts. Are these original or not?

[Mike M.]

Re: RPO 684 Rear Brake cylinders..Original or not?

you'll need the delco castings.don't buy the nos 49 to 50 chevy pass car cylinders which are same casting # but are drilled and tapped for the larger brake lines that chevy used in 49 and 50. mike

[Justin B.]

Re: RPO 684 Rear Brake cylinders..Original or not?

so, does this mean that the ones I have are correct or not?

[Mike M.]

Re: RPO 684 Rear Brake cylinders..Original or not?

if there's no delco casting embossment, they're generic. mike

[Loren L.]

They carry the 7 digit GM castin #,

but they're generic - from where?