"Subframe bushings" refer to a specific component in a vehicle that helps to stabilize and support the subframe. The subframe is the structural framework located underneath the car or truck, which holds important components like the engine, suspension, and steering. The bushings are small rubber or polyurethane parts that fit between the subframe and the car's chassis, providing cushioning and reducing vibrations. They help to secure and absorb shock, ensuring a smoother and more stable ride.