The role of clutch must be clear to everyone. Clutch plate as the main wear parts will appear clutch slip after excessive wear or even the failure of engine brake, so it is necessary to check and replace regularly. This article briefly introduces the purchase of clutch plate for you. Ⅰ. The common model of the clutch plate In the clutch model, the common φ360, 380, 400, 420 and other data refer to the size of clutch plate diameter (or outside diameter of clutch plate). The larger diameter of clutch can withstand the greater torque, so heavy trucks will use the larger size of clutch. https://www.lenelclutch.com/product/clutch-cover/