Mercury - Platinum Plus Throttle and Shift Cable 20 Ft Mechanical Engine Control 8M0085981. The Mercury Platinum Plus Throttle and Shift Cable is engineered for Mercury Gen II SAE mechanical control systems where smooth, predictable response is critical across longer routing runs. Built with Platinum Plus construction, it provides a direct mechanical connection with reduced internal friction to support consistent throttle and shift movement at the helm. The 20-foot (6.1 meter) length is ideal fo