National 208-F Automatic Transmission Differential Bearing

Overview of National 208-F Automatic Transmission Differential Bearing

The National 208-F is a precision-engineered automatic transmission differential bearing designed for select Acura and Honda models. This single row radial ball bearing ensures reliable performance and durability in transmission systems, specifically compatible with vehicles like the Honda Civic, CR-Z, ILX, and Insight.

• Single row radial design for efficient load handling
• Inner race bore diameter of 1.575 inches (40 mm)
• Outer race outside diameter of 3.150 inches (80 mm)
• Width of 0.709 inches (18 mm) for compact fitment
• Inner and outer race radius of 0.040 inches (1.016 mm) for smooth operation
• Part number 208-F for precise identification and replacement

Technical Specifications and Design Details

The National 208-F bearing features a single row radial ball bearing design, optimized for automatic transmission differentials. The inner race bore measures 1.575 inches (40 mm), matching the shaft size for a secure fit. Both the inner and outer races have a radius of 0.040 inches (1.016 mm), which contributes to reduced friction and wear during operation. The outer race outside diameter is 3.150 inches (80 mm), while the bearing width is 0.709 inches (18 mm), making it suitable for compact transmission assemblies in Acura and Honda vehicles. This bearing belongs to the 200 series and is classified as type A-8, ensuring compatibility with specific transmission models.

Compatible Vehicles and Applications

This National 208-F automatic transmission differential bearing is compatible with the following makes and models:

• Acura ILX
• Honda Civic
• Honda CR-Z
• Honda Insight

It is designed to replace worn or damaged bearings within the automatic transmission differential, helping maintain smooth gear operation and reduce drivetrain noise.

Common Issues Addressed by the 208-F Bearing

• Excessive transmission noise due to worn differential bearings
• Vibration or rough shifting caused by bearing wear
• Premature transmission component wear from inadequate bearing support
• Reduced transmission efficiency and performance
• Potential transmission failure from bearing seizure or damage

Installation Notes and Tips

• Ensure the bearing bore and shaft dimensions match the 1.575 inch (40 mm) specification for proper fit
• Use appropriate tools to press the bearing into place without damaging the races
• Clean all mating surfaces before installation to prevent contamination
• Verify bearing orientation and seating within the transmission differential assembly
• Consult vehicle-specific service manuals for torque specifications and installation procedures

Quality Assurance and Warranty

National bearings are manufactured to meet industry standards for durability and precision. The 208-F bearing undergoes rigorous quality control to ensure consistent performance in automatic transmission applications. While specific warranty details may vary, National typically offers coverage against manufacturing defects to provide confidence in product reliability.