Exact replacements for Volvo Penta Marine Transmission-Gear coolers and other Volvo Penta Marine engine cooling devices are sold by Mr. Cool internationally. Volvo Penta Marine builds and marinizes both gasoline and diesel engines for small and large craft. This is known as a very high quality engine. The only difference you'll see with our replacement Volvo Penta Marine Transmission-Gear coolers is the price.