For 1990-2009 cars

### Automatic

Allison® transmission identification plates are located on the rear left side of the housing, just above the oil pan.

#### Allison Transmission ID

(1) | Indicates Planetary Gear Type Automatic Transmission
(2) | Indicates Series
(3) | 0 - Indicates Close Ratio 5 - Indicates Wide Ratio
(4) | 6 or 7 - Indicates Number of Speed Ranges
(5) | Indicates Major Revision
(6) | Indicates Power Take Off
(7) | T - Indicates Transfer Case R - Indicates Retarder

### Manual

Eaton® transmission identification plates are located on the right rear side of the housing, near the top cover.

#### Eaton® Model FS ID

(1) | Synchronized
(2) | x 100 = Nominal Torque Capacity
(3) | Design Level
(4) | Forward Speeds
(5) | Ratio Set

#### Eaton® Model RT ID

(1) | Roadranger
(2) | Twin Countershaft
(3) | x 100 = Nominal Torque Capacity
(4) | Multi-Mesh Gearing
(5) | Forward Speeds
(6) | Ratio Set

#### Dana/Spicer® ID

(1) | Ratio Design B
(2) | Forward Speed
(3) | Maximum Foot-Pounds of Torque
(4) | Easy Shift Synchronized