65-66 Disc Brake Master Cyl.

[5s127]

65-66 Disc Brake Master Cyl. $150.00 each. Two are the early style that use an adapter and one is the later style that does not require the adapter. All three are sold as a rebuildable core.

Date Codes: early style: 113
Date Code Early Style: 363
Date Code Later Style: 17

[5s127]

Additional Pictures.

[texas swede]

How are these date codes to be read?
Texas Swede

[Bob Gaines]

How are these date codes to be read?
Texas Swede

Typically days of the year.

[5s127]

The Date Code uses the Julian Calendar. A 17 would be the 17th day for the year (Jan-17th). A 113 would be the 113th day of the year (Apr. 23rd). 363 would be the 363rd day of the year (Dec 29th.) Picture below for referance.

[texas swede]

Thanks guys,
Need to check the master cylinder that was in my car (5S275) when I bought it in 1988. The one in my car now I bought in
Denver Colorado 1991. Both have the adapters.
Texas Swede

[texas swede]

Found two in my garage, one dated 113 (probably the one from my car) and the second dated 135 which would be too late for my car.
Texas Swede