3.0 L (181 cu in) Buick V6, 2-barrel carburetor

Years 1982–85 Models 2

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Also described as Engine, 3.0L V6, 181 cu in, 2 barrel

Also documented for Buick

Documented applications

Cutlass Ciera — A-body (1982–1996)

1982–1985 Single-source

Ciera years and code: Wikipedia's Ciera engine table and its Buick V6 article (LK9 section lists the Ciera 1982–1985); no Celebrity kit page prints it

Ninety-Eight — C-body, front-drive (1985–1990)

1985 Single-source

the standard engine, 110 hp; Wikipedia's Buick V6 article lists the 1985 Ninety-Eight among the LK9's applications, and its Ninety-Eight article gives the 3.0L V6 for 1985 and drops it for 1986; the 1985 NICB Oldsmobile engine table prints a 3.0L V6 2 BBL with VIN letter E but names no car line and no RPO code; shared C-body code, the Buick Electra also lists it for 1985

This page aggregates every documented appearance of LK9 in the Oldsmobile reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.