2005-2018 Cummins G56 5th & 6th Gear Countershaft (ZMG56-9)

A gear counter is responsible for smooth shifting and efficient power transfer, effectively managing the transfer of torque and rotational speed. Like many other components within the transmission, if you smell burning, hear grinding, or experience delayed or difficulty shifting, these are telltale signs of a failing countershaft.

Part Number: ZMG56-9

• 5th & 6th Gear Countershaft
• G56
• 5.9L DIESEL / 5.7L GAS
• Cluster Gear Tooth Count: 45T-52T

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