CB5 / CO4 ◑ Single-source

Buick · Regular Production Option

Vinyl padded roof, full / rear

Years 1970–76 Models 1

Documented applications

Regal / Century →

• 1970–1976 ◑ Single-source

  Century, Regal

This page aggregates every documented appearance of CB5 / CO4 in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.