The Jatco RE4F03B 4-speed automatic transmission was first introduced in 1999 and is the newest and most powerful transmission in the 4F03 line. It is available on front- or all-wheel drive models with engines ranging from 2.0 to 3.0 liters, but produces no more than 280 Nm of torque.
Specifications
| Type | automatic transmission |
| Number of gears | 4 |
| Type of drive | front / all wheel |
| Engine volume, l | up to 3.0 |
| Torque output, Nm | up to 280 |
| Recommended oil | Nissan AT-Matic J Fluid |
| Oil capacity, liter | 8.6 |
| Replacing the oil | every 75 000 km |
| Replacing the filter | every 75 000 km |
| Gearbox lifespan, km | ~250 000 km |
Gear ratios Jatco RE4F03B
Using the 2001 Infiniti G20 with a 2.0-liter engine as an example:
| Main | 4.072 |
| 1st | 2.861 |
| 2nd | 1.562 |
| 3rd | 1.000 |
| 4th | 0.697 |
| Reverse | 2.310 |
Using
The transmission was installed on:
- Infiniti G20 P11 in 1999 – 2002;
- Nissan Altima L31 in 2002 – 2006;
- Nissan Maxima A33 in 1999 – 2003;
- Nissan Maxima A34 in 2003 – 2006;
- Nissan Teana J31 in 2003 – 2006.
Disadvantages of the Jatco RE4F03B gearbox
- One of the most reliable automatic transmissions in its class is only vulnerable to lubricant contamination;
- Friction wear products are spread throughout the system, clogging solenoids;
- Shocks, jerks, and vibrations damage seals and cause oil leaks;
- Oil starvation quickly destroys the planetary gear.
