2005-2018 Cummins G56 6-Speed Mainshaft (ZMG56-2)

Your mainshaft is the primary component within your transmission, responsible for power flow, working in unison with the gears to adjust torque output and speed to your wheels. If you smell burning, hear grinding, experience slippage, or issues changing gears, among many other symptoms, it could be a sign of a failing mainshaft. USA Standard Gear manufactures some of the best OEM replacement transmission and differential components for your truck, making building or maintenance a breeze.

Part Number: ZMG56-2

• For G56 manual transmissions
• Ensures proper torque and speed output
• Ideal OEM replacement

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