If you're restoring a late 50s or 60s Buick, you know how hard these little parts can be to find.

This is a vintage-style Optikleen windshield washer bottle cap.

It fits the 1959 through 1968 Buick models like the Riviera, Wildcat, and Electra.

It's a new old stock style part, unbranded but correct for the era.

Just the cap, no bottle.

A small detail that makes a big difference in a restoration.