Head Bearing 3.125in

The RATECH Head Bearing 3.125in (part number 7009) is a precision pinion head bearing engineered for GM 10-bolt differential assemblies. This steel bearing delivers the dimensional accuracy and load-bearing capability required for reliable drivetrain performance in both street and high-performance applications, with a 3.125-inch outer diameter and 1.438-inch inner diameter designed to OEM specifications.

Built to strict tolerances, this bearing functions as a critical component in differential assemblies where precision fit and durability are non-negotiable. The steel construction resists wear under continuous load, and the specified dimensions ensure proper seating within GM 10-bolt housings rated for 7.5-inch or 7.625-inch differential applications. Proper bearing installation and preload adjustment are essential for minimizing wear and extending differential service life.

This replacement bearing is ideal for differential rebuilds, repair work, or performance upgrades on vehicles equipped with GM 10-bolt rear differentials. Whether restoring a classic muscle car, maintaining a truck drivetrain, or supporting a high-performance build, using OEM-equivalent components like this RATECH bearing ensures compatibility and reliability. Each bearing ships as a single unit and should be installed by technicians familiar with differential assembly and bearing preload procedures.

RATECH is a recognized supplier of differential components and driveline parts, and this head bearing meets the dimensional and material standards required for proper differential function. Verify fitment to your specific vehicle's differential type before ordering, as 10-bolt assemblies are used across multiple GM platforms but may differ in bearing configuration.