Zumbrota Drivetrain RAA435-1906C Remanufactured Rear Axle Assembly Ford 9.75" 3.73 Ratio

The Zumbrota Drivetrain RAA435-1906C is a remanufactured complete rear axle assembly built for the Ford 9.75-inch rear end with a 3.73 gear ratio. This unit is engineered as a direct OEM replacement, restoring factory performance and driveability. Important: This is a tag-specific application — verify your axle identification tag before ordering to ensure correct fitment.

Remanufacturing Process:

• All axle tubes inspected and straightened to OEM specifications
• Housing hydro-blasted, sandblasted, and rinsed using Zumbrota's exclusive deep-cleaning process
• 100% inspection of all internal components including ring & pinion gears, internal gears, clutches, and carriers
• All bearings, seals, crush sleeves, pinion nuts, and shims fully replaced
• Gear tooth contact patterns and rolling torque precisely set using inch-pound measurements for optimal longevity
• Gear backlash correctly adjusted for proper lubrication and quiet operation
• Housing tested for surface wear and cracks

Key Specifications:

• Ring Gear Size: 9.75 inches
• Gear Ratio: 3.73
• Application: 1997–1998 Ford Expedition
• Tag-specific fitment — check axle identification tag prior to ordering

What's Not Included: Hubs, brakes, backing plates, and axle shafts are not included with this assembly.

Zumbrota Drivetrain has been a trusted name in remanufactured drivetrain components for decades, with a dedicated team of drivetrain specialists and a 60,000 square foot production facility. Each axle assembly meets rigorous quality standards, making the RAA435-1906C a reliable and cost-effective alternative to purchasing a new OEM unit.