THIS IS FOR A NEW DIAPHRAGM KIT FOR BRIGGS AND STRATTON 3.5 AND 3.75 SPRINT AND CLASSIC ENGINES. Replaces (OEM): BRIGGS & STRATTON 495770. Fits Models: BRIGGS & STRATTON 95900, 96900, 98900, 9C900 and 10A900, for 3.5 and 3.75 HP Sprint and Classic engines.