Suspension, firm ride and handling

Years 1984–87, 1989 Models 2 Factory citations 1

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Also described as Heavy-duty suspension

Also documented for Chevrolet Oldsmobile Pontiac

Documented applications

Century — A-body (1982–1996)

1984–1987, 1989 Single-source

Buick's 1985–1987 Regal option list calls F40 its firm ride and handling suspension; 1984–1987 from the parts catalog; 1989 from the Chevrolet Celebrity kit's order guide, which sells it as heavy-duty front suspension (a shared A-body suspension code)

GM Heritage factory kit — 1989 Chevrolet Celebrity, p.11.

Regal — G-body (1983–1987)

1987 Confirmed

not with F41, Y56 or WE2; gnttype.org's 1987 option sheet

This page aggregates every documented appearance of F40 in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.