Zumbrota Drivetrain RMTM5R1F-6SN Manual Transmission

The Zumbrota Drivetrain RMTM5R1F-6SN is a remanufactured 5-speed manual transmission designed specifically for the Ford Ranger (1991-1994) and Mazda B-Series (1994) 4WD models. This unit undergoes a rigorous three-step inspection process, ensuring that it meets or exceeds OEM specifications for performance and reliability.

Quality Assurance Process

Each RMTM5R1F-6SN transmission is subjected to a comprehensive quality control program, which includes:

• Pre-Inspection: Initial checks for case cracks, excessive wear, and common OEM issues.
• Component Measurement: All parts are measured to confirm they adhere to OEM specifications.
• Final Inspection: A thorough evaluation post-assembly to ensure the unit meets Zumbrota's strict quality standards.

Performance Testing

The transmission's internal components are meticulously inspected, focusing on:

• Gear wear analysis
• Mainshaft straightness testing
• Synchronizer functionality checks

Each unit is dyno-tested in various operational scenarios to verify performance, shift quality, and noise levels, ensuring that it operates smoothly under real-world conditions.

Cleaning and Finishing

To maintain the highest standards, Zumbrota employs an exclusive hydro-blast rinse and sandblasting procedure for both internal and external parts. This is followed by a proprietary deep cleaning process that ensures all contaminants are removed, setting a benchmark in manual transmission remanufacturing.

Warranty Information

Every Zumbrota manual transmission comes with a 2-year unlimited mileage warranty, providing peace of mind and confidence in your purchase.

Fitment

• Ford Ranger 4WD: 1991-1994
• Mazda B3000 4WD: 1994