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    Fuzzy match across codes, option descriptions, and model aliases. Every result is graded and, where the factory documents it, cited.
    A20 Factory-verified

    Chevrolet · Regular Production Option

    Swing-out rear quarter windows

    Years 1964, 1971–79 Models 4 Factory citations 4

    Also described as Seat BeltsCustom seat beltsSeat belts - customSwing-out rear quarter window

    Documented applications

    Nova / Chevy II
    • 1964 Confirmed
    • 1975–1979 Factory-verified
      GM Heritage factory kit — 1976 Chevrolet Nova, p.62.
      GM Heritage factory kit — 1979 Chevrolet Nova, p.9.
    Vega / Monza
    • 1971–1977 Factory-verified
      GM Heritage factory kit — 1972 Chevrolet Vega, p.12.
      GM Heritage factory kit — 1977 Chevrolet Vega, p.9.

    This page aggregates every documented appearance of A20 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.