W48 ◑ Single-source

Oldsmobile · Regular Production Option

Package, ES

Years 1984–85 Models 1

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Also documented for Pontiac

Documented applications

Cutlass Ciera — A-body (1982–1996) →

• 1984–1985 ◑ Single-source

  sedan; Wikipedia's Ciera article names the ES (RPO W48) sedan for 1983 through 1985 in its text and for 1984–1986 in its trim list, so only the overlap is claimed

This page aggregates every documented appearance of W48 in the Oldsmobile reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.