RPOARCHIVE
Loading index…

    Fuzzy match across codes, option descriptions, and model aliases. Every result is graded and, where the factory documents it, cited.
    M55 Factory-verified

    Chevrolet · Regular Production Option

    Transmission Oil Cooler Equipment

    Years 1963–79 Models 3 Factory citations 4

    Also described as Transmission coolerTransmission oil cooler

    Documented applications

    Chevelle / El Camino
    • 1965–1966 Factory-verified
      GM Heritage factory kit — 1965 Chevrolet Chevelle, p.28.
      GM Heritage factory kit — 1966 Chevrolet El Camino, p.3.
    Nova / Chevy II
    • 1965–1966 Factory-verified
      GM Heritage factory kit — 1965 Chevrolet Nova, p.5.
      GM Heritage factory kit — 1966 Chevrolet Nova, p.6.

    This page aggregates every documented appearance of M55 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.