A Transfer Case is a fundamental part of the 4-wheel drive system on your 2019-2024 Ram 2500/3500/4500. The Ram 6.7 diesel trucks came equipped with the BorgWarner BW4446 & BW4447 transfer case. 4-wheel high will maintain the same gear ratio as 2-wheel drive and is for high-speed situations such as driving on dirt or snow-covered roads. The Transfer Case mounts to the back of the transmission and is what the front and rear drive shafts connect to. It is responsible for transferring power to the front wheels and rear wheels in 4-wheel drive systems. 4-wheel low is for low-speed situations where maximum torque is required such as driving up a steep rocky hill or pulling out a stuck vehicle. Contained inside the transfer case is a set of gears and chains that are engaged or disengaged depending on the drive mode selected.

It is highly recommended to not engage the transfer case for anything other than off-road or low-traction situations.  When you shift the Transfer Case into 4-wheel drive, it locks the front and rear axles together so that they spin at the same speed. When engaged in 4-wheel drive the transfercase and drivetrain need some wheel slip to prevent binding or damage. Transfer Cases generally are very strong from the factory and do not require internal upgrade unless the vehicle is used for extreme off-roading or racing. In some applications an external brace can be added to increase the structural rigidity of the transfer case to prevent damage from high torque loads or twisting. XDP carries a wide selection of Ram Transfer Case products available from Zumbrota Dirvetrain, Mopar, Dorman, and more.