Exhaust Divider. Exhaust "Y" Joint Divider. These are two shells welded together the hole are slight OVAL.
Exhaust Y pipe Piece 2 to 1 38mm 1.5" Slip Joint Section Stainless Collector
Schoenfeld 3-1/2 In Inlets 4 In Outlet Exhaust Y-Pipe P/N Y3540
SCHOENFELD EXHAUST Y-PIPE COLLECTOR 3.0"IN-3-1/2"OUT DUAL IN STEEL SCHY3035
Exhaust Y Pipe 2 into 1 Divider 51mm 2" Section Stainless Steel Bike Collector
Exhaust Y pipe Piece 2 to 1 35mm Bike Slip Joint Section Stainless Collector