The Mack CRD93 rear-rear differential, part number CRD93R386, carries a 3.86 gear ratio and is sold by Pro Gear and Transmission on an exchange basis. Before placing your order, confirm a few details with us: whether your input and output shafts have fine or coarse splines, whether your upper torque rod uses a single tapered ball stud hole or a two-bolt dog-bone style mount, whether the rear of your differential housing has four 3/4" bolt holes for a transverse rod mounting plate around the rear through-shaft, and what your axle spline count is. These details ensure the correct unit ships for your application. Call us to confirm fit before ordering.

• Ratio: 3.86 Part Number: CRD93R386 or CRD93 3.86 Position: Rear-Rear Input/Output Shaft Spline: Fine or coarse - specify at time of order Axle Spline Count: Confirm with application Upper Torque Rod Mount: Single tapered ball stud hole or two-bolt dog-bone style - specify at time of order Transverse Rod Mounting Plate: Four 3/4" bolt holes in rear housing (optional configuration) - verify application

This differential is sold on an exchange basis. A core charge will apply at time of purchase and may be refunded in whole or in part following delivery and inspection of the returned core. The returned core is subject to the manufacturer core policy unless alternate terms are established in writing prior to purchase. Contact Pro Gear and Transmission to discuss core return procedures and to obtain a freight quote for your shipment.