Volvo Penta heat exchanger filler cap.
This is a replacement, genuine filler cap for the engine models listed below. If you are not sure as to the correct parts, please call for advice.
Volvo Penta Part No: 3581770
For Volvo Penta Engines D2-55, D2-55B, MD2010C, MD2010D, MD2020C, MD2020D, MD2030C, MD2030D, MD2040A, MD2040B, MD2040C, MD2040D