The MOOG RK641800 Control Arm Rear Upper is a high-quality suspension trailing arm made of stamped steel, designed for a 1-year manufacturer warranty. This control arm is manufactured in China and is specifically designed for the rear upper placement on the vehicle. It has a length of 3.800 inches and weighs 2.2000 pounds. The product is interchangeable with various part numbers including FA3225, MS40108, CA4921, CA85516PR, and more, making it a versatile and reliable choice for maintaining the suspension system of your vehicle.