MP 1222/1225/1226 Build Variations
WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
The NQG transfer case is available in 6 variations, depending on the engine and transmission configurations. The variations allow the transfer case to handle different torque loads. When servicing the transfer case it is important to understand which variation is being serviced because of the different internal components.
MP 1222/1225/1226 Variations
| Model | Transmission | Input Shaft | Output Shaft | Chain Size | Chain Series | Hi/Low Planetary | Application |
|---|---|---|---|---|---|---|---|
| MP 1222 Light Duty (LD) |
M30 - 4L60-E | 27T Spline |
32T Spline |
7/16 X 1.25 in | 9600 Series Rocker Pin Chain | 3 Pinion | K1 |
| MP 1222 Light Duty (LD) | MYC - 6L80 | 32T Spline |
32T Spline |
7/16 X 1.25 in | 9600 Series Rocker Pin Chain | 3 Pinion | K1 |
| MP 1225 Heavy Duty (HD - Canadian) |
MYD - 6L90 | 29T Spline |
31T Spline |
7/16 X 1.5 in | 2300 Series Round Pin Chain | 5 Pinion | K2 |
| MP 1225 Heavy Duty (HD) |
MYD - 6L90 | 29T Spline |
31T Spline |
7/16 X 1.5 in | 9600 Series Rocker Pin Chain | 5 Pinion | K2 |
| MP 1225 Heavy Duty (HD-Canadian) |
MYD - 6L90 | 29T Spline |
31T Spline |
7/16 X 1.5 in | 2300 Series Round Pin Chain | 5 Pinion | K2 |
| MP 1226 Super Heavy Duty (SHD) |
MYD - 6L90 MW7 - Allison |
29T Spline |
31T Spline |
7/16 X 1.5 in | 2300 Series Round Pin Chain | 5 Pinion | K2, K3 |