The Chrysler 42RH (A500) 4-speed automatic transmission was produced from 1988 to 1994 and installed in Dodge Ram and Dakota pickup trucks with the 3.9-liter Magnum engine. It was on this transmission that the popular 42RE electronically controlled automatic transmission was developed.
Specifications
| Type | automatic transmission |
| Number of gears | 4 |
| Type of drive | rear / all wheel |
| Engine volume, l | up to 3.9 |
| Torque output, Nm | up to 300 |
| Recommended oil | Mopar ATF+4 (MS-9602) |
| Oil capacity, liter | 11.5 |
| Replacing the oil | every 50 000 km |
| Replacing the filter | every 50 000 km |
| Gearbox lifespan, km | ~340 000 km |
Gear ratios Chrysler 42RH
Using the example of a 1993 Dodge Dakota with a 3.9 liter engine:
| Main | 3.73 |
| 1st | 2.74 |
| 2nd | 1.54 |
| 3rd | 1.00 |
| 4th | 0.69 |
| Reverse | 2.21 |
Using
The transmission was installed on:
- Dodge Ram 1 (BR) in 1988 – 1993;
- Dodge Ram 2 (DR) in 1993 – 1994;
- Dodge Dakota 1 (AN) in 1991 – 1993.
Disadvantages of the Chrysler 42RH gearbox
- This is a fairly rare, but very reliable automatic transmission and doesn’t cause any particular problems;
- Renew the torque converter clutch every 150,000 km, otherwise the solenoids will become clogged with dirt;
- Then, the clutches in the Direct and Forward packages will burn out due to reduced lubrication pressure;
- Around 200,000-250,000 km, it’s advisable to replace the brake band and reverse drum;
- Weak points of the automatic transmission include the centrifugal regulator and wiring.
