401–402, 421 ◑ Single-source

Pontiac · Regular Production Option

Lamp options

Years 1967 Models 1

Documented applications

Firebird / Trans Am →

• 1967 ◑ Single-source

This page aggregates every documented appearance of 401–402, 421 in the Pontiac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.