Heat exchanger end cap for Volvo Penta MD-series marine diesel engines. The end cap closes the heat exchanger housing and helps maintain the correct flow of cooling water through the heat exchanger. Replace a damaged, cracked or heavily corroded end cap to prevent cooling-water leakage and cooling-system problems. Suitable for: Volvo Penta MD2010 Volvo Penta MD2020 Volvo Penta MD2030 Volvo Penta MD2040