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 |