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    Fuzzy match across codes, option descriptions, and model aliases. Every result is graded and, where the factory documents it, cited.
    M-22 Factory-verified

    Oldsmobile · Regular Production Option

    HD close-ratio 4-speed (W-30 only)

    Years 1971 Models 1 Factory citations 1

    Documented applications

    Cutlass / 4-4-2
    • 1971 Factory-verified

      "Rock crusher" Muncie; factory list: "Manual Transmission - 4-Speed - Close Ratio Fully Synchronized - Floor Shift - Heavy Duty"

      GM Heritage factory kit — 1971 Oldsmobile 442 Info Kit, p.223.

    This page aggregates every documented appearance of M-22 in the Oldsmobile reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.