Mercury - Platinum Plus Throttle and Shift Cable 16 Foot Mechanical Engine Control - 858342A16. The Mercury Platinum Plus Throttle and Shift Cable is designed for Mercury mechanical control systems where consistent, predictable response at the helm is essential. Built with Platinum Plus construction, this cable delivers a direct mechanical connection between the helm and engine while reducing internal friction for a smoother, more refined control feel. The 16-foot length supports extended routin