Chrysler

Chrysler A-903

From the Gearbox Wiki, the reference for people who still shift their own.

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Chrysler A-903 is a manual gearbox from Chrysler. The Society has 7 vehicles on file with it, 3 with a source we opened and 4 still leads.

Dodge

Vehicle	Years	Shift pattern	Gearbox source
Dodge A100 van 3-speed manual ^{[citation needed]}	1964-1970	3 speed, column shift	Lead
Dodge Dart Compact (A-body) 170 / 225 six, 3-speed manual ^{[citation needed]} Applies to: 1963-1966	1963-1966	3 speed, column shift	Lead
Dodge Dart (full-size) 1960 All series, 3-speed column ^{[citation needed]}	1960	3 speed, column shift	Lead
Dodge Dart (full-size) 1960-61 All series ^{[citation needed]} Applies to: Six-cylinder	1961	3 speed, column shift	Lead

Vehicle	Years	Shift pattern	Gearbox source
Plymouth Fury / Belvedere 3-speed manual ^[1] Applies to: Six-cylinder (1964)	1960-1970	3 speed, column shift	Corroborated
Plymouth Valiant First generation Signet, 170 cu in six ^[2]	1963	3 speed, column shift	Corroborated
Plymouth Valiant Second generation Slant six ^[3]	1966	3 speed, column shift	Corroborated

Caveats and conflicts (6)

Inference from the Chrysler list only; A100 van not named in any source opened. A-745 (1961-71, V8) possible on V8 vans.
Inference; the 1960 owner's manual does not give a code.
Inference.
Manual is 1964 only; row spans 1960-70. Wikipedia Chrysler list gives A903 1960-1972.
Manual is 1964, row is 1963. Wikipedia Chrysler list: A903 1960-1972.
1966 not individually shown. A-230 replaced it from 1970.

Service manual. 1964 Plymouth/Valiant service manual: 'The three speed Manual Transmission used on 6-cylinder vehicles is referred to as Model A-903'. [link]
Service manual. 1964 Plymouth/Valiant service manual: Model A-903 3-speed on 6-cylinder vehicles; 170 six Valiant. [link]
Wikipedia. List of Chrysler transmissions: '1960-1972 Chrysler A903 - 3-speed manual for 6-cyl'; 1964 Valiant service manual confirms A-903 on slant-six Valiants. [link]

Categories: Gearboxes | Chrysler

This page was last edited on November 11, 2026. Gearbox codes change by year, engine and market. Send a correction.