Technical specifications (Opel Omega B)

Type	Four-speed automatic transmission, with electronically controlled
Encoding*:
– 2.0 and 2.5 liter engines	AR25
– 3.0 l engines	AR35

* The code is stamped on the identification panel, fixed on the left side of the gearbox.

Tightening torques, Nm

Bolts, transmission and engine bracket (2.0L, composite oil pallet):
Bolt securing bracket to engine	40
Bolt securing bracket to gearbox	22
Transmission Fluid Tube Connections:
- connection bolts	25
- connection nuts	30
Transmission Fluid Filter Bolts	20
Liquid level measuring hole plug	33
Driven shaft sensor bolts	12
Propeller shaft center bearing bracket bolts	20
Propeller shaft flange nut	100
Bolts securing the rear crossmember to the body	45
Gear Shift Lever Switch Bolts	13
Gear shift mechanism:
– tie bolt of the switching rod	8
- nut of the pivot rod of the lever	28
- a nut that secures the lever to the gearbox shift rod transmission	20
- oil pan bolts	12
- bolts securing the torque converter to the drive disk	30
– gearbox bolts:
- bolts securing the box to the cylinder block	60
- bolts securing the box to the oil pan	40