25503812
Transmission Countershaft
Mack

This countershaft is a key component within the transmission system, responsible for transferring power from the input shaft to the gears. Its precise engineering ensures smooth gear engagement and efficient power transfer, which are vital for optimal vehicle performance. Made from high-strength materials, it withstands the stresses of heavy-duty operation and frequent shifting. Proper functioning of this part reduces wear on other transmission components and contributes to the longevity of the drivetrain. Its installation is critical during transmission rebuilds or repairs, ensuring proper gear alignment and operation. Source One Parts Center provides this essential part to keep your transmission running reliably in demanding conditions.