The Case-IH 309651A1 Set is a genuine OEM replacement part designed for various Case-IH agricultural tractors. This set ensures proper function and fitment for models including the 9200 series (9210, 9230, 9240, 9250, 9260, 9270, 9280), 9300 series (9310, 9330, 9350, 9370, 9380, 9390), STX series (STX275, STX325, STX375, STX425, STX440, STX450, STX500, STX530), Steiger series (Steiger 280, 330, 335, 380, 385, 430, 435, 480, 485, 530, 535), and Quadtrac series (Quadtrac 450, 500, 530). Refer to your machine's parts catalog for specific application details.