are front wheel drive transaxle derivatives of the A904 Torqueflite. In the late 1970s, Chrysler designed the A404 TorqueFlite three-speed automatic transaxle for its front wheel drive Dodge Omni and Plymouth Horizon subcompact cars. This transaxle would be upgraded in the 1980s into the A413 and A670 units, which were progressively heavier-duty, for Chrysler's K-cars and their derivatives, including the minivans. The four-speed Ultradrive electronic four-speed automatic transaxle would eventually replace it, but the three-speed lasted for more than a decade after the 1989 debut of the four-speed unit. A404 The light-duty A404 was used with the smallest straight-4 engines from Chrysler, commonly the 1.7 L Volkswagen unit. A413 or 31TH The A404 was strengthened to become the A413 (later 31TH) in 1981. This was used with Chrysler's 2.2 and 2.5 L K-car engines. It was available both with and without a lockup torque converter. Applications: 1995-2001 Dodge/Plymouth/Chrysler Neon 1982-1995 Chrysler LeBaron 1987-1994 Dodge Shadow/Plymouth Sundance/Chrysler 1978-1990 Dodge Omni/Plymouth Horizon 1981-1989 Plymouth Reliant/Dodge Aries 1989-1995 Dodge Spirit/Plymouth Acclaim 1983-1988 Plymouth Caravelle 1983-1984 Chrysler E-Class 1983-1988 Dodge 600/Chrysler New Yorker 1982-1983 Dodge 400 1988-1993 Dodge Dynasty 1983-1987 Dodge Charger 1983-1986 Chrysler Executive 1984-2007 Dodge Caravan/Grand Caravan/Plymouth Voyager/Grand Voyager 1985-1989 Dodge Lancer 1989-1991 Chrysler TC by Maserati A415 The A415 was developed for the 1.6 L Simca 1100 engine, but was not released for series production in the USA. It was used in Europe, on Talbot Simca, 1510 and Solara. A470 The A470 was a strengthened version of the transaxle used with the 2.6 L Mitsubishi Astron engine in the K-cars from 1981 to 1985 and minivans from 1984 through 1987. A670 The highest-specification three-speed transaxle was the A670. It was used with the 3.0 L Mitsubishi V6 engine in Chrysler's cars and minivans from 1987 to 2000. Gear ratios: See also List of Chrysler transmissions AMC/Jeep Transmissions Pan Shapes and Naming References Automatic transmission tradenames Chrysler transmissions Chrysler Auto parts