| Type | 28MT | 38MT | 42MT | 42MT | 39MT | 50MT | Denso 545 |
| Engine Size | Up to 6.5L | C7 7.2-8.3, ISB 6.7, T444E 7.3 | Fits wide range of diesel applications | Up to 16L | Up to 16L | UP to 80L | Fits 3.9L to 5.9L Cummins diesel engines |
| Voltage | 12V | 12V | 24V | 12V | 12 & 24 Volt | 12V & 24V | 12V |
| Rotation | Clockwise | Clockwise | Clockwise | Clockwise | Clockwise | Clockwise | Clockwise |
| Mounting | SAE #1, SAE #3 | SAE 3, SAE 1 | SAE | 82.5? | SAE #3 | SAE #3 & #1 | Offset 13Teeth |
| Peak Output | 2.9kW | 4.6kW | 7.8kW | 7.3kW | 12V – 7.3kW/ 24V – 9.0kW | 12V 7.5KW/ 24V 9.5KW | 2.5 kW |
| Weight | 18.4 lbs / 8.3 kg | 30 lbs. | 65 lbs. | 60 lbs. / 27.2 kg | 33 lbs. / 14.9 kg | 37KG | 19 lbs. / 8.6 kg |
| Motor Type | Gear reduction | Gear Reduced | Direct Drive | Direct Drive | Gear Reduced | Direct Drive | Gear reduced |
| Drive Design | Positive shift engagement | Soft Start | Positive Engagement | Positive Engagement Design and?Over Crank protection | Soft Start | Positive Engagement | Positive shift engagement |
| Pinion Support | Heavy duty clutch | Noseless | Nose | Nose | Nose | Noseless | |
| Nose | Fixed & sealed | Rotatable & sealed | Rotatable & sealed | Rotatable & sealed | Rotatable & sealed | Rotatable & sealed |