This is a genuine Dana/Spicer loaded open differential for the M300 rear axle found in many 2017+ Ford F450 and F550 trucks with 41 spline axles. This is for gear ratios 4:10 and up. Here are some specifications from Dana’s website:
| Brand | Spicer |
| Axle Model | M300 |
| Vehicle Location | Rear |
| Cover Bolt Quantity | 14 |
| Axle Shaft Spline Quantity | 41 |
| Differential Case Split | 4.10 And Up (F450/F550) |
| Differential Type | Standard |
| Carrier Type | Loaded |
| Axle Spline Diameter (IN) | 1.79 |
| Material | Nodular Iron |
| Bearings Included | Yes |
| Ring Gear Bolt Quantity | 14 |
| Bolt Thread Size | M14 x 1.50 |

417-862-4455



