Upgrade your Hyundai R210-9 excavator's control system with this premium throttle knob ignition switch (part number 21Q4-20812). This robust component features a textured grip surface for precise throttle control even in demanding conditions. The integrated switch mechanism provides smooth operation while maintaining reliable electrical contact. The durable construction is designed to withstand the rigors of heavy equipment operation, while the ergonomic knob design reduces operator fatigue during extended use. Compatible with Hyundai R210-9 excavator models, this replacement part ensures optimal performance and responsiveness of your machine's throttle system. The switch includes necessary wiring connections, marked by color-coded cables for straightforward installation. This essential component helps maintain proper engine speed control and operational efficiency of your excavator.