This Napa Echlin KS6603 switch assembly is a perfect fit for your Chevrolet B60 School Bus. The switch is designed to control the engine kill and is made with durable materials, ensuring that it will last for years to come. The assembly comes in a sleek gray color and is designed to fit seamlessly into your vehicle's steering column. This vintage part has a 7 pin connector and is compatible with a range of interchange part numbers, including D1406A, 1F7, UL13-6, CS81, LS411, and US84. It is also compatible with OE/OEM part numbers 1116683, 1116712, 1116688, 1116704, and 1116504. The switch is a universal fitment and is made in the United States.