Mercury - Platinum Plus Throttle and Shift Cable 21 Ft Mechanical Engine Control 8M0085982. The Mercury Platinum Plus Throttle and Shift Cable is engineered for Mercury Gen II SAE mechanical control systems where smooth, consistent response is required over extended routing distances. Featuring Platinum Plus construction, it delivers a direct mechanical connection with reduced internal friction to support clean, predictable throttle and shift movement at the helm. The 21-foot (6.4 meter) length