Gearbox Toyota U881

The 8-speed automatic transmission Toyota U881 or Aisin AWF8F35 has been assembled since 2015 and is installed only on the fourth generation Lexus RX350 with a 3.5-liter 2GR-FKS engine. There are two modifications: U881E for front-wheel drive cars, U881F for all-wheel drive.

This series includes: U880, U881.


Production years since 2015
Type automatic transmission
Number of gears 8
Type of drive front / all wheel
Engine volume, l up to 3.5
Torque output, Nm up to 380
Recommended oil Aisin AW-2
Oil capacity, liter 7.2
Replacing the oil every 60,000 km
Replacing the filter every 60,000 km
Gearbox lifespan, km ~300 000
Weight, kg 95

Gear ratios Toyota U881

Using the example of a Lexus RX350 2018 with a 3.5 liter engine:

Main 3.329
1st 5.250
2nd 3.028
3rd 1.950
4th 1.456
5th 1.220
6th 1.000
7th 0.808
8th 0.673
Reverse 4.014

The transmission was installed on:

  • Lexus RX350 4 (AL20) since 2015.

Disadvantages of the Toyota U881 gearbox

  • The main problems of the predecessor U880 have already been fixed and this is a reliable gearbox.
  • The main thing is to monitor the condition of the cooling system, all problems here are caused by overheating.
  • High temperature reduces the life of Teflon rings and oil pressure drops.
  • And then, due to low oil pressure in the system, the clutches in the packages begin to burn out.
  • Even during active driving, the valve body quickly becomes clogged with friction wear products.

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