Throttle Arm 3/8 Billet

The Throttle Arm 3/8 Billet from KING RACING PRODUCTS is a precision-engineered mechanical linkage component designed for performance-oriented engine bay modifications and carburetor tuning applications. This compact yet robust throttle arm serves as the critical pivot point between your throttle cable and carburetor butterfly valve, translating driver input into precise fuel-air mixture adjustment. Built for serious enthusiasts and professional mechanics who demand reliability in high-performance or modified engine configurations, this component is essential for custom carb setups, race applications, and builds requiring extended or custom throttle geometry.

Machined from solid billet aluminum, the Throttle Arm 3/8 Billet exhibits superior strength-to-weight characteristics compared to stamped steel alternatives, reducing rotating mass while maintaining structural integrity under aggressive throttle modulation. The 3/8-inch bore specification ensures compatibility with standard carburetor throttle shaft diameters, while the billet construction eliminates casting porosity and material inconsistencies that can cause binding or premature wear. Precision tolerances and smooth bearing surfaces allow the arm to articulate freely without friction, directly improving throttle response and driver control feel—critical factors in race-tuned powerplants or street machines requiring quick, predictable engine transitions.

This throttle arm is ideal for hot rodders, bracket racers, and engine builders working with single or dual-carburetor setups on small-block Chevrolet, Ford, or Mopar platforms, as well as restomod projects requiring period-correct or enhanced throttle geometry. Installation involves removing the original throttle arm from your carburetor's throttle shaft and replacing it with this billet component—a straightforward 10-minute job requiring only basic hand tools. Weighing just 0.06 lbs, its minimal mass and compact 1.55 x 0.45 x 3.55-inch profile make it suitable for tight engine bay layouts without requiring custom fabrication or exotic shaft modifications.