The Mack CRD92 front drive differential carries part number RBT-CRD92-3.87 or CRD92R387 and is built around a 3.87 ring-and-pinion ratio. Before placing your order, have the following details ready: fine or coarse spline on the input and output shafts, whether your upper torque rod uses a single tapered ball stud hole or a two-bolt dog-bone style, whether the rear of the differential housing has four 3/4" bolt holes for a transverse rod mounting plate around the rear through-shaft, and your axle spline count. These variables determine exact fitment on Mack front drive axle applications. Call us to confirm the correct configuration for your truck before ordering.
A refundable core charge of $1,500.00 applies to this item and will be collected at checkout. The core charge is refunded upon receipt of your returned core, subject to its condition; customer is responsible for return shipping. Call us at (877) 776-4600 for details.
Features
Mack CRD92 front drive differential
3.87 ring-and-pinion gear ratio
Part number RBT-CRD92-3.87 or CRD92R387
Fitment varies by input/output shaft spline type - confirm fine or coarse spline before ordering
Upper torque rod mounting varies: single tapered ball stud hole or two-bolt dog-bone style
Rear housing may include four 3/4" bolt holes for transverse rod mounting plate - verify your configuration
Tech Specs
- Ratio: 3.87
