Seawater Side Aftercooler & Heat Exchanger Maintenance Kits. Our Custom Kits include: Aftercooler O-rings, Heat Exchanger Gaskets and Seals, Zincs for both the Aftercooler and Heat Exchanger, Metalube w/ application brush, Kroil, RectorSeal #5, and Tube Cleaning Rod (not shown)

** Please note: International orders WILL NOT include the 1/8″ inch S.S. cleaning rod that is used to clean the heat exchanger and aftercooler cooling tubes due to high shipping costs. **