Turbo Hydra-Matic 400

Years 1970 Models 3

Also described as Turbo Hydra-Matic 400 (RPO M40)

Documented applications

Full-Size — LeSabre / Electra / Wildcat

1970 Confirmed

Full-size

Riviera

1970 Confirmed

Riviera (std/required)

Skylark / GS

1970 Confirmed

GS 455

This page aggregates every documented appearance of B2 in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.