Semi Truck Rear End Diagram. A chevy 1 2 ton pick up may have a chevy 10 bolt rear axle or a 12 bolt rear axle. Majority of semi trucks are equipped with one front steer axle and two rear axles combined as a tandem axle.

All of these axles take different parts so we need to properly identify the axle you have to get you the right part. We stock nearly all of the differential components in both of the diagrams below with the exception of housings. These differential and axle assembly exploded views are provided to help identify the parts you need by name.

The number of rear axles will usually determine what axle truck it is.

The number of rear axles will usually determine what axle truck it is. A chevy 1 2 ton pick up may have a chevy 10 bolt rear axle or a 12 bolt rear axle. For example two rear axles is called a tandem truck and three rear axles is called a tridem truck. The underside view shows the arrangement of the 18 tires wheels.