The Yamaha OEM Raptor Grizzly 660 Right Exhaust Rocker Arm 3YF-12163-00-00 is a genuine replacement part made specifically for Yamaha vehicles. Manufactured in Japan, this high-quality rocker arm is designed to ensure proper functioning of the ATV's exhaust system. Compatible with Yamaha models, this OEM part is a reliable and durable component that helps maintain the performance of the vehicle.