The H4 was Honda's first 4-speed automatic transmission. It is distinguished from the later H4A by its use of two rather than three shafts.
Applications:
- 1983 Honda Accord (AK)
- 1983–1985 Honda Prelude (AS)
- 1984–1985 Honda Accord (AS)
- 1985–1987 Honda Prelude (F4)
- 1986–1989 Honda Accord (F4)
- 1986–1987 Honda Civic (CA)
- 1986–1987 Honda CRX (CA)
- 1986–1987 Acura Integra (CA)
- 1988–1989 Honda Prelude (K4)
- 1988–1989 Acura Integra (P1)
- 1989–1990 Honda Civic (S5)
- 1990–1991 Honda Prelude (PY8A)