1986-1987 Turbo Regal -
GM ENGINE COOLANT CAP

This is the factory GM original engine coolant cap.

This black screw-on cap goes on the overflow bottle, located on the passenger’s side inner fender.
Aftermarket coolant caps look slightly different from this original GM cap.

When you replace your coolant bottle, this is a nice under-the-hood finishing touch.

6880 - 1986-1987 Turbo Regal - GM Engine Coolant Cap