Timken LM78310A Differential Pinion Race - Front Outer, Rear or Rear Inner

Timken LM78310A Differential Pinion Race Overview

The Timken LM78310A differential pinion race is engineered for precision and durability in driveline applications. Designed to meet the specific requirements of Audi and Maserati models, this bearing component ensures reliable performance and proper fitment.

• Width options: 0.535 inches (13.60 mm)
• Outside diameter: 2.440 inches (61.97 mm)
• Bearing cup radius: 0.059 inches (1.50 mm)
• Compatible with select Audi 80, 90, 100 models and Maserati Biturbo, Spyder, 228i, 430i
• Part number LM78310A for accurate identification

Technical Specifications and Compatibility

The LM78310A differential pinion race features a precise outside diameter of 2.440 inches (61.97 mm) and a width of 0.535 inches (13.60 mm), providing a secure seating surface for the pinion bearing. The bearing cup radius of 0.059 inches (1.50 mm) is designed to match OEM specifications, ensuring optimal load distribution and longevity. This part is compatible with various Audi models including the 80, 90, and 100 series, as well as Maserati vehicles such as the Biturbo, Spyder, 228i, and 430i, making it suitable for driveline repairs and maintenance on these vehicles.

Applications and Problem Solving

• Replaces worn or damaged differential pinion races in Audi and Maserati driveline systems
• Addresses issues related to bearing noise and vibration caused by improper fitment
• Helps prevent premature bearing failure due to incorrect race dimensions
• Restores proper pinion bearing alignment for improved drivetrain performance
• Supports smooth differential operation by maintaining correct bearing seating

Installation Notes and Tips

When installing the Timken LM78310A differential pinion race, ensure the race is properly seated using a press or appropriate installation tool to avoid damage. Clean the housing bore thoroughly before installation to remove debris and contaminants. Verify the dimensions of the replacement race against the original to confirm compatibility. Lubricate the race and bearing surfaces as recommended by the vehicle manufacturer to facilitate smooth operation.

Quality Assurance and Warranty

Timken manufactures the LM78310A differential pinion race to meet stringent quality standards, ensuring durability and consistent performance. This part undergoes rigorous testing to comply with OEM specifications. While specific warranty details may vary, Timken products typically include coverage against manufacturing defects. Consult Timken or authorized distributors for warranty information related to this part number.