ET116-001 Drain Line Adapter (DLA) With 1/4-inch Quick Connect Fitting for a Water Filter and 7/8-inch Fitting for a Dishwasher : Amazon.co.uk: DIY & Tools
Y Splitter Joint Adapter Overflow Pipe Dishwasher Washing Machine Double Inlet Drain Pipe Sink Junction 6 Point Tee Joint Gasket - AliExpress