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Cotta is a U.S.-based manufacturer specializing in high-performance gearboxes, transfer cases, and speed reducers for heavy-duty applications. Founded in 1906, Cotta has built a long-standing reputation for engineering precision drivetrain components used in off-highway, defense, industrial, and custom-built vehicles. Known for their durability, customization, and American-made quality, Cotta products are widely trusted in industries where…

The Meritor MD2014X-411 is a heavy-duty tandem rear-drive axle differential engineered for maximum torque and durability in severe-service environments. With a 4.11 gear ratio, this differential is ideal for Class 8 trucks and vocational vehicles that demand strong pulling power for steep grades, heavy payloads, off-road travel, or frequent stop-and-go applications like construction, refuse, or…

The Meritor MD2014X-433 is a premium tandem rear-drive axle differential engineered for the toughest Class 8 trucking applications where maximum torque and gradeability are essential. With a 4.33:1 gear ratio, this model is specifically designed for vocational trucks and severe-service environments such as construction, refuse, logging, and off-road hauling. Built on Meritor’s proven MD2014X platform,…

The Meritor MD2014X-463 is a high-torque tandem rear-drive axle differential, purpose-built for Class 8 vocational and severe-duty trucks operating in the most demanding environments. With a 4.63:1 gear ratio, this differential is designed for maximum pulling power and traction in applications where steep grades, heavy payloads, off-road terrain, or constant start-and-stop cycles are the norm.…

The Meritor MD2014X-488 is a heavy-duty tandem rear-drive axle differential built to deliver maximum torque and traction in the most extreme work conditions. With a 4.88:1 gear ratio, this differential is designed specifically for off-road and severe-service Class 8 trucks that demand consistent low-speed power, pulling strength, and rugged reliability in environments like construction sites,…

The Meritor MD2014X-529 is a high-capacity tandem rear-drive axle differential engineered for Class 8 trucks operating in the most demanding and extreme-duty environments. With a 5.29:1 gear ratio, this differential is specifically designed to deliver maximum torque output and low-speed power, making it ideal for trucks handling heavy payloads on steep grades, off-road conditions, or…

The Meritor MD2014X-586 is a heavy-duty tandem rear-drive axle differential engineered for the most extreme torque demands in Class 8 vocational trucks. Featuring a 5.86:1 gear ratio, this differential delivers exceptional low-speed power and pulling force, making it an ideal choice for off-road, severe-grade, and heavy-payload applications such as logging, refuse, mining, and construction hauling.…

The Meritor MD2014X-614 is a robust tandem rear-drive axle differential designed for maximum torque output and durability in the most severe operating environments. Featuring an aggressive 6.14:1 gear ratio, this differential is built to support Class 8 trucks that operate in extremely demanding off-road, heavy-haul, and vocational applications like refuse, logging, mining, and construction. Engineered…

The Meritor MD2014X-643 is a heavy-duty tandem rear-drive axle differential engineered to deliver exceptional low-speed torque and pulling power in the most demanding on- and off-road conditions. Featuring an aggressive 6.43:1 gear ratio, this differential is purpose-built for Class 8 trucks operating in severe-service environments such as logging, construction, refuse hauling, and mining, where durability…