MANUAL TRANSMISSION

The G56 transmission is a robust and durable manual transmission option designed for heavy-duty truck use. Introduced in 2005, it replaced the cast-iron NV5600 transmission in Ram trucks, offering a lightweight aluminum case and higher input torque capacity. Despite its initial popularity, the G56 faced challenges as diesel engines grew more powerful, leading to its discontinuation in the Ram lineup after the 2018 model year.

Known for its reliability, the G56 transmission required proper maintenance and care to ensure longevity. Issues such as dual-mass flywheel failures and lubrication controversies were common, making repairs costly and specialized. However, when used within its design parameters and serviced regularly, the G56 transmission could provide years of dependable service.

The legacy of the G56 transmission reflects a broader industry trend towards automatic transmissions in full-size trucks. Once a popular choice for their simplicity and efficiency, manual transmissions have declined in popularity as automatics have improved in both efficiency and durability. Despite this shift in consumer preferences, the G56 remains a respected option for those seeking a manual transmission in their heavy-duty truck.

Common applications of the G56 transmission include Ram 2500, 3500, 4500, and 5500 models from 2005 to 2018. Various aftermarket products, such as the CPP Diesel Extreme Duty G56 Transmission and Zumbrota RMTG56 Manual Transmissions, cater to those looking to upgrade or replace their existing G56 transmissions. Overall, the G56 transmission category represents a piece of truck history, offering a glimpse into the evolution of manual transmissions in the North American truck market.