National LM806649 Automatic Transmission Differential Bearing - Front, Left or Rear

Overview of National LM806649 Automatic Transmission Differential Bearing

The National LM806649 is a precision-engineered automatic transmission differential bearing designed for reliable performance in various European and American vehicles. This taper bearing cone is compatible with models from Audi, Mercedes-Benz, Porsche, Volkswagen, Chrysler, Dodge, Maserati, and Saab, ensuring a precise fit and smooth operation.

• Cone Bore Diameter: 2.1250 inches (53.9750 mm)
• Cone Length: 0.7500 inches (19.0500 mm)
• Cone Radius: 0.0930 inches (2.3620 mm)
• Part Type: Taper Bearing Cone for automatic transmission differential
• Compatible with multiple makes and models including Audi A4 Quattro, Mercedes-Benz 300E, Porsche 911, and Dodge Charger

Detailed Product Description and Specifications

The LM806649 bearing cone from National is manufactured to meet strict dimensional tolerances, featuring a cone bore of 2.1250 inches (53.9750 mm) and a cone length of 0.7500 inches (19.0500 mm). The cone radius measures 0.0930 inches (2.3620 mm), providing the necessary geometry for optimal load distribution within the automatic transmission differential assembly. This part is engineered to maintain proper bearing alignment and reduce friction, contributing to the longevity and smooth operation of the transmission system.

Compatible Vehicles and Applications

This automatic transmission differential bearing is compatible with a wide range of vehicles, including but not limited to:

• Audi models such as A4, A4 Quattro, A6, A6 Quattro, and Allroad Quattro
• Mercedes-Benz models including 300E, 300SEL, 380SE, 420SEL, 500E, and various AMG variants like C32 AMG and S55 AMG
• Porsche models including 911, 968, and Boxster
• Volkswagen models such as Passat and Phaeton
• Chrysler and Dodge vehicles including Challenger, Charger, Magnum, and Monaco
• Maserati and Saab models

Common Issues Addressed by LM806649 Bearing Cone

• Eliminates excessive play or noise in the automatic transmission differential
• Prevents premature wear caused by improper bearing fit or alignment
• Reduces transmission vibration and harsh shifting
• Restores smooth differential operation in vehicles with worn or damaged bearings
• Helps maintain proper torque distribution between wheels

Installation Notes and Tips

• Ensure the bearing cone is installed with correct orientation and seating within the differential assembly
• Use appropriate tools to avoid damage to the bearing surfaces during installation
• Verify compatibility with the specific vehicle model and transmission type before installation
• Inspect related transmission components for wear or damage during replacement
• Follow manufacturer torque specifications for all fasteners involved

Quality Assurance and Warranty Information

National LM806649 bearing cones are manufactured to meet OEM specifications and undergo rigorous quality control to ensure durability and performance. While specific warranty details may vary, National typically offers coverage against manufacturing defects to provide confidence in the product's reliability for automotive transmission applications.