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Fits Honda GX340 & GX390 Engines – Direct replacement throttle and governor spring set for genuine Honda and clone engines (11HP / 13HP) Complete Kit Includes – Governor spring, throttle return spring, and link rod for proper speed control and throttle response Also Compatible with 188F Engines – Works on generators, water pumps, pressure washers, welders, and other equipment powered by GX340 / GX390 / 188F engines Restores Stable Engine Speed – Fixes surging, hunting, or inconsistent RPM caused by worn or broken springs Durable Metal Construction – Easy to install high-quality replacement parts designed for long-lasting performance