Abstract: An improved band clamp for securely clamping the end of a flexible hose to one of at least a rigid pipe, a cast outlet of a radiator, a charge air cooler and a turbocharger in order to prevent fluid communication between the two. The improved band clamp includes a clamp band which is configured to circumvent a substantial portion of the hose. The clamp band defines first and second ends, each of which is defined by a terminal portion of the clamp band folded over on itself to define a double thickness, and then formed in an arcuate configuration away from the center of the clamp band. A spline is provided for being received between each of the first and second ends of the clamp band. First and second spacers are provided on the outer sides of the clamp band first and second ends. The first spacer, each of the first and second clamp band ends, and the spline each define an opening to cooperatively receive a bolt. The second spacer defines a threaded opening to receive the bolt in threaded engagement.