Monitor Products, Inc. is an ISO 9001:2015 certified manufacturer and recognized leader in the field of heat transfer products. We have developed and manufactured many of the world's most cost effective and efficient shell and tube heat exchangers and oil coolers, since 1979. We manufacture a variety of custom designed heat transfer products for a variety of major Original Equipment Manufacturers such as: MerCruiser, Volvo Penta, Yanmar, Westerbeke, Onan and more!