Zumbrota Drivetrain RTC4446D-6 Transfer Case

The Zumbrota RTC4446D-6 Transfer Case is a precision-engineered component designed for the 2013-2018 Ram 3500 equipped with Aisin transmissions. This transfer case is built to meet the rigorous demands of heavy-duty applications, ensuring reliable performance under various driving conditions.

Construction and Quality Assurance

Each RTC4446D-6 unit undergoes a meticulous rebuilding process, executed by skilled craftsmen. The transfer case and its internal components are thoroughly inspected for wear, including checks for cracks, stripped threads, shaft straightness, gear wear, and chain stretch. This attention to detail guarantees a robust and dependable transfer case.

Cleaning and Maintenance

Zumbrota employs a unique Hydro-blast rinse and sandblasting technique on both internal and external parts, followed by a proprietary shot-enticed deep cleaning process. This ensures that every unit is free from contaminants that could affect performance or longevity.

Components and Specifications

• Transfer Case Type: BW4446
• Input Spline Count: 28 Spline
• Rear Output Type: Slip Yoke
• Transmission Adapter: 8-Bolt
• Selector Switch Positions: 3
• Shift Operation: Electric
• Fluid Capacity: 1.9 quarts
• Fluid Type: Synthetic TCF
• Transfer Case Motor: Not included

Durability Testing

After rebuilding, each transfer case is subjected to rigorous spinning tests to assess shift-ability and noise levels, ensuring that the unit meets Zumbrota's high standards before it leaves the facility. To protect against damage during shipping, all finished units are securely packaged in high-density plastic totes.

Fitment

• Compatible with Ram 3500 4WD models from 2013 to 2018.