Timken 3720 Differential Pinion Race

Timken Differential Pinion Race Overview

The Timken 3720 Differential Pinion Race is engineered for reliable performance in driveline and axle assemblies. Designed specifically for Hummer H1 and Pontiac Catalina models, this pinion race ensures precise fitment and durability under demanding conditions.

• Width dimensions: 0.938 inches (23.81 mm)
• Outside diameter: 3.672 inches (93.26 mm)
• Bearing cup radius: 0.130 inches (3.30 mm)
• Compatible with Hummer H1 and Pontiac Catalina differential assemblies
• Part number 3720 for accurate identification and replacement

Technical Specifications and Design Details

The Timken 3720 Differential Pinion Race features a width of 0.938 inches (23.81 mm) and an outside diameter of 3.672 inches (93.26 mm), providing a precise fit within the differential housing. The bearing cup radius measures 0.130 inches (3.30 mm), which supports optimal bearing seating and load distribution. These dimensions are critical for maintaining proper alignment and smooth operation of the pinion gear in the differential system.

Compatible Vehicles and Applications

This differential pinion race is compatible with select driveline systems on the Hummer H1 and Pontiac Catalina. It is designed to replace worn or damaged pinion races in these models, ensuring continued drivetrain reliability and performance.

• Restores proper pinion bearing seating in Hummer H1 differentials
• Replaces worn pinion races in Pontiac Catalina axle assemblies
• Helps reduce differential noise and vibration caused by bearing wear
• Supports smooth gear engagement and drivetrain efficiency

Installation Notes and Tips

When installing the Timken 3720 Differential Pinion Race, ensure the differential housing is clean and free of debris. Proper seating of the race is essential to avoid premature bearing failure. Use appropriate tools to press the race evenly into place without damaging the bearing surface. Verify fitment with the specific Hummer H1 or Pontiac Catalina differential model before installation.

Quality Assurance and Warranty

Timken manufactures the 3720 Differential Pinion Race to meet strict quality standards for durability and performance. While specific warranty details are not provided, Timken products are generally backed by industry-standard warranties covering defects in materials and workmanship. This part is identified by GTIN 00053893129792 for traceability and authenticity.