Conn King Valve Stem, Baritone, Euphonium, Marching Euphonium Trigger Assy Yamaha version has a larger

Yamaha version has a larger shank size of 4

See my item ID# 16985 for a 4-Valve Euphonium YEP-641(2) 1987-1995

Plastic Valve Guide Set of 3

See my item ID# 28541 for a Conn 20K bell screw

mouthpipe screw

Conn King Valve Stem, Baritone, Euphonium, Marching Euphonium Trigger Assy Yamaha version has a largerConn King Valve Stem, Baritone & Euphonium. Contact me if you wish to verify your model's fit. 18I Conn Baritone B1104 King Baritone 15I Conn Baritone 14I Conn Baritone 2266 King Baritone 2266SP King Baritone 1129 King Marching Euphonium 1129SP King Marching Euphonium B1114 Bach Baritone 627 King Baritone 625 King Baritone 623 King Euphonium 2268 King Baritone 2268SP King Baritone