Toilet Flush Valves 2-Inch Replacement Valve Kit Assembly for One Piece Dual Flush Drain Valve Repair Compatible with TOTO THU338N - - Amazon.com
Mansfield 3.25-in Plastic Flush Valve Assembly for Use In 3.5 Gpf Alto-pro-fit Tanks in the Residential Toilet Flush Valves & Repair Parts department at Lowes.com