This is a genuine Dana/Spicer Trac-lok posi for the M300 rear axle found in many 2017 and newer Ford F350 trucks. This differential has 37 spline axle gears and includes both side bearings and races (10124439) with bearing numbers 3994 and race numbers 3920. Here are some specs from Dana’s website:
Brand | Spicer |
Axle Model | M300 |
Vehicle Location | Rear |
Cover Bolt Quantity | 14 |
Axle Shaft Spline Quantity | 37 |
Differential Case Split | 3.73 And Down |
Differential Type | Trac-Lok |
Carrier Type | Loaded |
Axle Spline Diameter (IN) | 1.62 |
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 | 51.85 LB |
Country of Origin |
United States |