62-amp Delcotron (67–72 list) / 66-amp (73–87 & GM lists)

Years 1963–82 Models 4 Factory citations 5

Also described as A/C Generator - 62 amp62 amp alternatorA/C generator - 62 amp62-amp Delcotron66-amp generator (Delcotron)

Documented applications

Chevelle / El Camino

1964–1966 Factory-verified

GM Heritage factory kit — 1964 Chevrolet Chevelle, p.9.
GM Heritage factory kit — 1966 Chevrolet El Camino, p.3.

Impala / Full-Size

1963–70s (varies) Confirmed

Nova / Chevy II

1963–1965 Factory-verified

GM Heritage factory kit — 1965 Chevrolet Nova, p.5.

C/K Trucks

1965–66 Factory-verified

GM Heritage factory kit — 1965 Chevrolet Truck, p.19.
GM Heritage factory kit — 1966 Chevrolet Truck, p.24.
1967–72 Disputed

Amperage disagrees between sources
1973–82 Confirmed

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This page aggregates every documented appearance of K81 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.