Gearbox Mitsubishi F4A41

The Mitsubishi F4A41 4-speed automatic transmission was produced from 1996 to 2011 and was installed on many models of the Japanese concern such as Colt, Carisma, Lancer and Space Star. After the update in 2003, this automatic transmission is more often found under a slightly different index F4A4A.

This series includes: F4A21, F4A22, F4A23, F4A33, F4A41, F4A42, F4A51, W4A32, F5A51.

In 1996, Mitsubishi introduced a new family of 4-speed automatic transmissions. F4A41 is the youngest of them, installed on front-wheel drive models with engines up to 1.8 liters and 167 Nm. The design is classic: the torque of the power unit is transmitted through a torque converter, the gear ratios of the four gears are formed using two planetary gearboxes, five clutch packs are responsible for switching, and in some versions there is also an overrunning clutch.

There are many modifications of this automatic transmission for different engines and car models: for example, the MRA version was installed on Carisma, and the M8A on similar Lancer or Colt.

Specifications

Production years 1996 – 2011
Type automatic transmission
Number of gears 4
Type of drive front
Engine volume, l up to 1.8
Torque output, Nm up to 167
Recommended oil Mitsubishi ATF SP-III
Oil capacity, liter 7.8
Replacing the oil every 60,000 km
Replacing the filter every 120,000 km
Gearbox lifespan, km ~350 000

Gear ratios Mitsubishi F4A41

Using the example of a Mitsubishi Lancer 1997 with a 1.6 liter engine:

Main 4.042
1st 2.842
2nd 1.529
3rd 1.000
4th 0.712
Reverse 2.480

The transmission was installed on:

  • Mitsubishi Carisma 1 (DA) in 1996 – 2004;
  • Mitsubishi Colt 5 (CJ) in 1996 – 2003;
  • Mitsubishi Dingo 1 (CQ) in 1998 – 2003;
  • Mitsubishi Lancer 8 (CK) in 1996 – 2003; Lancer 9 (CS) in 2002 – 2010;
  • Mitsubishi Space Star 1 (DG) in 1998 – 2005.

Disadvantages of the Mitsubishi F4A41 gearbox

  • This is a very reliable and durable automatic transmission, but it also has a weak point: under heavy load, the needle bearing of the Overdrive planetary gearset crumbles. After this, the rear planetary gear, as well as the ring gear, are usually destroyed, their fragments scatter throughout the system and can get into the oil pump and jam it.
  • The hydraulic unit in this gearbox lasts up to 100 – 150 thousand kilometers without problems, and then it becomes clogged and sensitive shocks and jerks appear when switching. If you do not pay attention, the friction discs will start to burn due to a drop in pressure. So we recommend changing the transmission oil at least once every 50 thousand km, and preferably more often.
  • Also, servicemen often change the differential idler gear bearing, the input speed sensor, and there is also wear on the Teflon rings in the rear cover.

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