Gearbox ZF 4HP14

The 4-speed automatic ZF 4HP14 was produced at a plant in Germany from 1983 to 1998 and was installed on many popular European cars such as Citroen Xantia, Peugeot 405 and Rover 800. And then the license for its assembly was bought by the Korean company Daewoo for the Leganza and Nubira models.

4HP family: 4HP14, 4HP16, 4HP18, 4HP20, 4HP22, 4HP24.

Specifications

Production years 1983 – 1998
Type automatic transmission
Number of gears 4
Type of drive front
Engine volume, l up to 2.1
Torque output, Nm up to 180
Recommended oil Total Fluide AT42
Oil capacity, liter 5.4
Replacing the oil every 60,000 km
Replacing the filter every 60,000 km
Gearbox lifespan, km ~300 000
Weight, kg 67

In 1983, ZF released a new 4-speed automatic transmission with hydraulic control for front-wheel drive models with transverse engines up to 2.1 liters. This rather archaic gearbox, without any electronics, was produced in Germany until 1998. And in 1997, the Korean concern Daewoo bought the assembly license for the Leganza and Nubira models, but two years later they abandoned this transmission in favor of the more modern GM 4T40E.

Gear ratios ZF 4HP14

Using the example of a Daewoo Leganza 1998 with a 2.0 liter engine:

Main 3.73
1st 2.412
2nd 1.369
3rd 1.000
4th 0.739
Reverse 2.828

The transmission was installed on:

  • Citroen BX I (X56) in 1984 – 1994;
  • Citroen ZX I (N20/N21) in 1992 – 1998;
  • Citroen Xantia I (X1/X2) in 1992 – 1998;
  • Citroen Xsara I (N6/N7) in 1997 – 1998;
  • Daewoo Leganza 1 (V100) in 1997 – 1999;
  • Daewoo Nubira 1 (J100) in 1997 – 1999;
  • Peugeot 205 I (M24) in 1986 – 1994;
  • Peugeot 305 I in 1987 – 1989;
  • Peugeot 309 I (C28) in 1986 – 1994;
  • Peugeot 405 I (D6/D7) in 1987 – 1997;
  • Rover 800 I (XS) in 1991 – 1999;
  • Volvo 440 I (445) in 1990 – 1996;
  • Volvo 460 I (464) in 1990 – 1996;
  • Volvo 480 I (482) in 1989 – 1995.

Disadvantages of the ZF 4HP14 gearbox

  • First of all, it should be noted that there are two different versions of this transmission: a very reliable and durable gearbox, produced at the ZF concern plant in Germany, and a gearbox of questionable quality, assembled under license by the Korean concern Daewoo.
  • With regular oil changes, the automatic transmission lasts a long time and without problems, however, at very high mileage, wear of the plain bearings is often encountered. The oil pump and turbine shaft bushings are delivered first, and then the rest.
  • If you ignore the wear of the bushings, then the friction discs burn out due to a decrease in pressure. Also, the weak points of the gearbox of this series include the short-lived overrunning clutch.

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