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    Fuzzy match across codes, option descriptions, and model aliases. Every result is graded and, where the factory documents it, cited.
    W-37 Factory-verified

    Oldsmobile · Regular Production Option

    HD two-plate clutch

    Years 1971–72 Models 1 Factory citations 3

    Documented applications

    Cutlass / 4-4-2
    • 1971–72 Factory-verified

      Factory kits confirm: 1971 "Clutch - Heavy Duty… Available Only with M20 or M22" ; 1972 explicitly "Clutch - Heavy Duty - 2-Plate; M20 Only"

      GM Heritage factory kit — 1971 Oldsmobile 442 Info Kit, p.225.
      GM Heritage factory kit — 1972 Oldsmobile Cutlass 442 Info kit, p.190.
    • 1972 Factory-verified

      Factory list: "Clutch - Heavy Duty - 2-Plate; M20 Only"

      GM Heritage factory kit — 1972 Oldsmobile Cutlass 442 Info kit, p.190.

    This page aggregates every documented appearance of W-37 in the Oldsmobile reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.