Dorman 935-503 Drive Shaft Coupler - Front or Rear

Reliable Drive Shaft Coupler for Mercedes-Benz 300 Series

The Dorman 935-503 drive shaft coupler is designed specifically for Mercedes-Benz 300D, 300SD, 300SEL, and 300TD models. Engineered with durable rubber and steel materials, this flexible coupler ensures smooth driveline operation and helps maintain vehicle performance.

• Constructed from high-quality rubber and steel for durability
• Black finish with a 22.6 mm sleeve length for precise fitment
• Attachment via 6 bolt holes, each 12 mm in diameter, with a 129 mm bolt pattern diameter
• Standard replacement grade for reliable driveline connection
• Includes one flexible coupler; installation hardware not included

Durable Materials and Precise Specifications

The Dorman 935-503 drive shaft coupler combines rubber and steel components to provide flexibility and strength where the drive shaft connects to the transmission or differential. The rubber material absorbs vibrations and reduces noise, while the steel ensures structural integrity under torque loads. The black coupler features six bolt holes sized at 12 mm, arranged in a 129 mm bolt pattern diameter, allowing secure attachment with bolts (not included). With a sleeve length of 22.6 mm, this part fits tightly to maintain driveline alignment and performance.

Compatible Mercedes-Benz 300D Drive Shaft Replacement

This drive shaft coupler is compatible with Mercedes-Benz 300D, 300SD, 300SEL, and 300TD models, providing a direct replacement for worn or damaged couplers. The part number 935-503 ensures you receive the correct component designed for these specific vehicles, avoiding fitment issues common with universal parts.

Common Issues Addressed by the Drive Shaft Coupler

• Eliminates driveline vibrations caused by worn coupler material
• Prevents noise from loose or damaged coupler connections
• Restores proper torque transfer between drive shaft components
• Reduces wear on adjacent driveline parts by maintaining alignment
• Helps avoid driveline failure due to coupler degradation

Installation Notes and Tips

Installation requires bolting the coupler to the drive shaft using six bolts (not included) matching the 12 mm bolt hole size and 129 mm bolt pattern diameter. Ensure all mounting surfaces are clean and free of debris before installation. Proper torque specifications should be followed to avoid over-tightening or loosening during operation. This part is a standard replacement and not a universal fit, so verify compatibility with your Mercedes-Benz 300D, 300SD, 300SEL, or 300TD before installation.

Quality Assurance and Warranty

Dorman manufactures the 935-503 drive shaft coupler to meet standard replacement quality requirements. While installation hardware is not included, the part is built to provide reliable service life when installed correctly. Please consult Dorman’s warranty policy for specific coverage details related to this part.