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    Fuzzy match across codes, option descriptions, and model aliases. Every result is graded and, where the factory documents it, cited.
    PQ9 Single-source

    Oldsmobile · Regular Production Option

    8.85×15 4-ply custom whitewall polyester tire

    Years 1969 Models 1

    Documented applications

    This page aggregates every documented appearance of PQ9 in the Oldsmobile reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.