Description Replacement Kit for Kohler K1078578 Rialto Model K-3386 Fill Valve and Flush Valve Flush Valve is 7 inches tall for 2.5-inch flush hole on the front of the tank Flush Valve K1078578 or 3420216 Fill Valve Simplified Replacement For Parts 1068030, 1007488 Made with premium materials for enhanced durability Engineered to promote product longevity