National 25877 Transfer Case Output Shaft Bearing

National Transfer Case Output Shaft Bearing Overview

The National 25877 transfer case output shaft bearing is engineered to provide reliable support and smooth operation for your vehicle's transfer case. Designed as a taper bearing cone, this part ensures precise fitment and durability for various makes and models including Chevrolet, Ford, Jeep, and Nissan.

• Part Number: 25877
• Type: Transfer Case Output Shaft Bearing (Taper Bearing Cone)
• Cone Bore Diameter: 1.3750 inches (34.9250 mm)
• Cone Length: 0.9688 inches (24.6080 mm)
• Cone Radius: 0.0620 inches (1.5750 mm)
• Compatible with multiple vehicle makes and models

Technical Specifications and Attributes

This National transfer case bearing features a cone bore diameter of 1.3750 inches (34.9250 mm), providing a precise fit on the output shaft. The cone length measures 0.9688 inches (24.6080 mm), ensuring proper engagement within the transfer case assembly. Additionally, the cone radius of 0.0620 inches (1.5750 mm) supports smooth rotation and load distribution, critical for maintaining transfer case performance under various driving conditions.

Compatible Vehicles and Fitment Details

The National 25877 bearing is compatible with a wide range of vehicles, including Chevrolet Blazer, Camaro, and S10; Ford Bronco, F-100, and F-350 Super Duty; Jeep Cherokee, CJ5, and CJ7; Nissan 280ZX and 300ZX; as well as models from Chrysler, Dodge, GMC, Isuzu, Mercury, Pontiac, and others. This part is designed specifically for transfer case output shafts in these vehicles, ensuring proper fit and function.

Common Applications and Problem Resolution

• Replaces worn or damaged transfer case output shaft bearings
• Eliminates transfer case noise caused by bearing wear
• Prevents transfer case shaft misalignment and vibration
• Restores smooth transfer case operation and drivetrain performance
• Addresses bearing failure symptoms such as rough rotation or excessive play

Installation Notes and Tips

When installing the National 25877 transfer case output shaft bearing, ensure the transfer case is clean and free of debris. Properly lubricate the bearing cone and mating surfaces to prevent premature wear. Use appropriate tools to press the bearing into place without damaging the cone bore or radius. Verify correct alignment and shaft engagement before reassembling the transfer case.

Quality Assurance and Warranty Information

National transfer case bearings are manufactured to meet OEM specifications for durability and performance. The 25877 bearing undergoes rigorous quality control to ensure dimensional accuracy and material integrity. While specific warranty details may vary, National typically offers coverage against manufacturing defects to provide confidence in the part's reliability.