This is a genuine Dana/Spicer Trac-Lok differential for the M300 rear axle found in many 2017+ Ford F450 trucks. This replaces Dana part numbers 10043383 and 2008049. Here are some specs 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 | Trac-Lok |
| Carrier Type | Loaded |
| Axle Spline Diameter (IN) | 1.79 |
| Material | Nodular Iron |
| Bearings Included | Yes |
| Ring Gear Bolt Quantity | 14 |
| Bolt Thread Size | M16 x 1.25 |
| Package Type | EACH |
| Package Qty | 1 |
| Weight | 62.13 LB |
| Country of Origin |
United States |
PC3Z-4026-C is the Ford part number.

417-862-4455





