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ChevroletCopper-Cooled

1923 – present United States Automobile 1 production year
Production1923 – present
Recorded originUnited States
ClassAutomobile
Also known asChevrolet Series M Copper-Cooled
Background

The 1923 Chevrolet Series M Copper-Cooled was an automobile made to be completely air-cooled by Chevrolet in 1923. It was designed by Charles F. Kettering, head engineer of Delco, the General Motors research division wing in Dayton, Ohio. The automobile used a body style from its predecessor, but incorporated an air-cooled engine. Air cooling, as opposed to water-based cooling, was much more practical in a sense because it did not require a radiator, nor the piping that came with it. Although air cooling was not new to the time period, it was new to engines of that scale. The Copper-Cooled Chevrolet was in fact a feasible project; however, the final product did not live up to the standards that Kettering had imagined. The car dangerously overheated in hot weather, and posed a safety hazard to the drivers. Only a few made it to the sales floor, only to be recalled and destroyed by Chevrolet. The 1923 Chevrolet Series M Copper-Cooled consumed extensive amounts of resources to develop and was a failure in the end. The engine was manufactured as an alternative to the Franklin which also used an in-line air-cooled engine.

Text adapted from “Chevrolet Series M Copper-Cooled” on Wikipedia ↗ · CC BY-SA 4.0 ↗ · retrieved 2026-07

Chronology ledger

Dates with their meaning intact

Production chronology1923–open

Sourced production or model lifecycle range used by the main catalog timeline.

wikidata ↗1 year