Features: Ensures your motorhomes comfort systems are in top shape with our module board water heater fan control board, designed for seamless integration and superior performances. Crafted from plastic, this control board features precise ignition controls and is engineered to replace part numbers 520871, 520820, 520814, 33550l, and ap4896608, offering a reliable solution for your water heater and fan needs. For motorhomes owners who prioritize maintenance and upgrades, this module board is a must have for those seeking to enhances their vehicle's heating capabilities with a dependabled component. Whether you're embarking on country adventure or setting up camp outdoors, this control board ensures your water heater and fan operate efficiently, keeping your living space comfortable in all conditions. Installation is easy with this user friendly module board, making it perfect for diyer enthusiasts or professional technicians looking to upgrades their motorhomes heating systems with out the hassle. Specifications: Component:ABS Size:As Picture Shown For Suburban SW4D, SW6D, SW6DE, SW6DEL, SW6DEM, SW6DM, SW6,SW10 Part Number:520814 520871 520820 33550L AP4896608 Package Includes: 1 Set Water Heater Fan Controller Circuit Board note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual coloring of the item. Thanks for your understandings.