National MA-1206-EF Wheel Bearing - Rear Outer

Overview of National MA-1206-EF Wheel Bearing

The National MA-1206-EF wheel bearing is engineered for reliable driveline performance in select Porsche and Volkswagen vehicles. Designed as a cylindrical bearing assembly, this component ensures smooth wheel rotation and durability for models like the Porsche 924 and Volkswagen Beetle.

• Compatible with Porsche 924 and Volkswagen Beetle models
• Cylindrical bearing assembly with precise dimensions
• Bore diameter: 1.1811 inches (30 mm)
• Outside diameter: 2.4409 inches (62 mm)
• Width: 0.6299 inches (16 mm)
• Includes cylindrical inner race (MA-1206) and outer race (M-1206-EF)
• Type: Si bearing design for driveline applications

Technical Specifications and Features

The MA-1206-EF wheel bearing features a bore size of 1.1811 inches (30 mm), which fits precisely on the axle shaft for optimal alignment. The outside diameter measures 2.4409 inches (62 mm), providing a secure fit within the hub assembly. With a width of 0.6299 inches (16 mm), this bearing maintains proper spacing and load distribution. The assembly includes a cylindrical inner race (MA-1206) and a cylindrical outer race (M-1206-EF), both designed to work together to reduce friction and wear under typical driving conditions. The Si type bearing construction is suitable for the specific driveline requirements of Porsche 924 and Volkswagen Beetle vehicles.

Applications and Problem Solving

This wheel bearing assembly is intended for use in the driveline and axle systems of Porsche 924 and Volkswagen Beetle models. It addresses common issues such as:

• Excessive wheel play or looseness
• Noise or grinding sounds from the wheel area
• Uneven tire wear due to bearing failure
• Reduced steering stability or vibration
• Premature bearing wear from improper fit or contamination

Installation Notes and Tips

Proper installation of the National MA-1206-EF wheel bearing is critical for optimal performance. Ensure the bearing bore matches the axle shaft diameter of 1.1811 inches (30 mm) and that the hub assembly accommodates the 2.4409 inch (62 mm) outside diameter. Use appropriate tools to press the bearing into place without damaging the races. Clean all components thoroughly before installation to prevent contamination. Verify correct seating of the cylindrical inner and outer races to maintain bearing integrity.

Quality Assurance and Warranty

National wheel bearings are manufactured to meet industry standards for durability and precision. The MA-1206-EF part number undergoes rigorous quality control to ensure consistent performance in Porsche 924 and Volkswagen Beetle applications. While specific warranty details may vary, National typically offers coverage against manufacturing defects to support long-term reliability.