I did a search and found part # 5468309 with a US stamp is correct for a 69 Z. My qustion is what does a 5468309 with an EA stamp belong on? Also what was the correct application for a part number 5480348? Thanks!

Hey dz,

Any chance that the stamping is light and it is actually BA? BA= 1969 Chevelle. Sometimes the B will look like an E

That's possible Jonesy. I haven't actually seen the master cylinder. Thanks for the reply.

Oh, you saw the one on ebay, perhaps?

Not one with the "US" stamp. Hard to find item. And its the last part I need to complete my engine compartment detail.