The DS404 differential carrier assembly, part number RBT-DS404342 or DS404342, is a 404-series carrier unit rated at a 3.42 gear ratio. The DS404 is a common rear axle differential carrier found in heavy-duty truck applications, and the 3.42 ratio is a widely specified option for vocational and line-haul configurations. This carrier is sold on an exchange basis through Pro Gear and Transmission. 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, subject to the applicable core policy. Call us to confirm proper fit for your axle and application before ordering.

• Ratio: 3.42

This unit is sold on an exchange basis. A core charge will apply at the time of purchase. The core charge may be refunded in whole or in part upon delivery and inspection of the returned core. The returned unit is subject to the applicable manufacturer core policy unless otherwise agreed to in writing. Contact Pro Gear and Transmission for details before placing your order.