Mercury - Platinum Plus Throttle and Shift Cable 21 Ft Mechanical Engine Control 8M0082593. The Mercury Platinum Plus throttle and shift cable is built for Mercury SAE mechanical control systems that require smooth, dependable operation over longer helm-to-engine routing distances. The 21-foot length is ideal for extended console layouts where proper routing is critical to prevent binding, stiffness, or uneven control feel. Platinum Plus construction reduces internal friction while maintaining a