Genuine OEM Heavy-Duty Transmissions & Internal Components

Keep your drivetrain shifting smoothly with our selection of genuine OEM transmission parts. We offer authentic overstock components for the industry's leading heavy-duty gearboxes, including Allison Automatic, Eaton Fuller, Mack, and Volvo transmissions.

This collection features high-durability hardware designed for the rigors of commercial hauling, including internal gears, main shafts, syncros, and shift towers. We also stock essential electronic and monitoring components such as neutral position switches, speed sensors, and transmission oil temperature senders. Whether you are performing a bench rebuild or replacing a faulty sensor to restore shift quality, using factory-spec OEM parts ensures your transmission can handle the torque demands of your specific vocational application.