Part number needed

Part number for your vacuum advance is 1116065. Fits 1937-1952 all series. This is from a Buick parts book 1940-1965.JRL
 
Mark, here's some more numbers--

Buick parts lists before 1954 showed it to be a 1116046. AC-Delco aftermaket numbers were an H-681 or D-1303. Standard Ignition catalog number was a VC-6. Filko called it a VC-62X.

There were no crossovers shown listing any other car brands using this part. Parts like this with a hidden rubber diaphragm can go bad sitting on the shelf for 30-40 years. For that reason, NOS items like this shouldn't command a premium price.
 
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