U35 / U63 ◑ Single-source

Buick · Regular Production Option

Electric clock / AM radio (RPO)

Years 1970–76 Models 1

Documented applications

Riviera →

• 1970–1976 ◑ Single-source

  Riviera

This page aggregates every documented appearance of U35 / U63 in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.