7843-4290006
Differential Pinion Seal
Mack

The differential pinion seal is essential for preventing gear oil leaks from the pinion area within the differential assembly. Its high-quality construction ensures a tight seal that withstands the pressures and rotational forces typical in heavy-duty drivetrains. Proper sealing maintains lubrication levels, reducing wear and preventing contamination of the gear set. Regular inspection and replacement of this seal are vital for maintaining differential health and avoiding costly repairs. The seal’s durable materials resist heat, vibration, and exposure to lubricants, ensuring long-term performance. Ensuring a proper fit and installation is critical for optimal operation. Source One Parts Center supplies this component, guaranteeing compatibility and quality for your Mack truck’s drivetrain system.