K05 (KO5) ● Confirmed

Chevrolet · Regular Production Option

Engine block heater

Years 1963–66, 1973–82 Models 1

Documented applications

C/K Trucks →

• 1963–66 ◑ Single-source

  All (retained from RPO reference; not seen in kits)

• 1973–82 ● Confirmed

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This page aggregates every documented appearance of K05 (KO5) in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.