REAR AXLE DIFFERENTIAL – MERCEDES-BENZ VITO / VIANO W639

This rear axle differential (OEM part number A6393501314) is designed for Mercedes-Benz Vito and Viano W639 models and features a 38:11 final drive ratio. The unit has undergone a comprehensive professional overhaul to ensure reliable performance, durability, and factory-correct operation.

Each differential is fully disassembled, inspected, and rebuilt using high-quality replacement components where required. All critical tolerances, gear meshing, and bearing preload are checked to meet OEM standards. Every unit is tested to verify smooth operation and correct functionality before delivery.

The differential is supplied with a 6-month warranty, making it a dependable solution for vehicle repair, drivetrain restoration, or commercial fleet maintenance.

Overhaul Process Details

The reconditioning process includes:

1. Complete system inspection and repair of all differential components

2. Replacement of worn or damaged parts, including:

   • Bearings

   • Gears

   • Seals and sealants

3. Functional verification and testing to ensure:

   • Correct gear engagement

   • Proper preload and backlash

   • Quiet and smooth operation

Technical Specifications

• Part Type: Rear axle differential

• OEM Part Number: A6393501314

• Final Drive Ratio: 38:11

• Condition: Reconditioned / Overhauled

• Warranty: 6 months

• Manufacturer: Mercedes-Benz (OEM)

• Installation Position: Rear axle

Vehicle Compatibility

• Mercedes-Benz Vito W639

• Mercedes-Benz Viano W639

(Compatibility may vary by engine and drivetrain configuration. VIN verification is recommended before purchase.)

Key Benefits

• OEM-correct differential for W639 models

• Professionally rebuilt to factory standards

• Improved reliability and reduced drivetrain noise

• Cost-effective alternative to a new unit

• Supplied with 6-month warranty for peace of mind

Ideal Applications

• Drivetrain repair or replacement

• Commercial vehicle and fleet maintenance

• Workshop and dealer installations

• Export and resale of refurbished OEM Mercedes-Benz components