Washer tank caps

[COPO 70 RS/Z28]

I was wondering about these caps. I have two I assume they are originals and not repops thee are slight differences between the two.

Any input?????

CAP1






CAP 2





Thanks

[COPO 70 RS/Z28]

OK,

Here is the question....

Assuming originality (I dont have a clue about these) Cap one has a ridge partial on the lift tab but cap two has a ridge all the way on the lift tab.

Does anyone know the application of these or any other info. one is off a 67 and one is off a 70. What about the different numbers underneath??

Thanks

[JohnZ]

The numbers are cavity numbers - those caps were shot in multiple-cavity injection molds, and each individual cavity was numbered for internal traceability.

[Tommy_Mathison]

[ QUOTE ]
OK,

Here is the question....

Assuming originality (I dont have a clue about these) Cap one has a ridge partial on the lift tab but cap two has a ridge all the way on the lift tab.

Does anyone know the application of these or any other info. one is off a 67 and one is off a 70. What about the different numbers underneath??

Thanks





[/ QUOTE ]

The partial ridge cap is correct for 1969 and previous years; not exactly sure how far back. The full ridge cap is correct for 1970 and up.