What’s so important about an Upper Coupler?
The Upper Coupler (sometimes called the king pin plate, skid plate, pickup plate, upper fifth wheel, or fifth wheel plate) is like no other part on your tractor trailer. The Upper Coupler includes the king pin and is THE CONNECTION between your truck and your load. No other part plays such an important role in safely connecting you and your trailer – and keeping you connected.
And while a lot of truck parts get worked hard, virtually no other truck or trailer part takes the abuse and endures the constant pressure and extreme conditions as the Upper Coupler!