Exhaust Valve - 31431412 Models 165, 168, 174, 175, 178, 184, 185, 188, 240, 255, 265, 274, 275, 284, 285, 290, 294, 3050, 3060, 3065, 3070, 362, 365, 375, 383, 387, 390, 390T, 393, 397, 398, 50B, 50E, 50H, 565, 575, 590, 6500, 6530, 6550, 675, 6840, 6860, 6880, 690, 7500, 7550, 7860, 7880, 8500, 8550, 8860, 8880, 9080, 9880, A4.212, A4.236, A4.248, Blizzard 65, Blizzard 75, Blizzard 85, Blizzard 95, C6500, C6830, C7800, C7830, Trekker 75, Trekker 85, Rex 95, Rex 85, Rex 75, Rex 65