Throttle Return Spring

The MOROSO Throttle Return Spring (MPN 64926) is a precision carburetor linkage component designed to ensure positive throttle closure in high-performance and classic engine builds. This spring is essential for mechanics working on carbureted powerplants, as a worn or missing throttle return spring can severely impact drivability and safety.

Manufactured from high-carbon steel and heat-treated for durability, this spring maintains consistent load and performance across various conditions. It is engineered to replace OEM springs that have lost tension, providing reliable throttle response and idle quality by snapping the throttle plate closed immediately when foot pressure is released from the accelerator pedal.

Ideal for restoring stock carburetor function in classic muscle cars, street rods, and vintage trucks, this component is also suitable for tuners building custom carbureted engines. Its compact profile allows for seamless integration into most carburetor applications without requiring modifications to existing linkage or mounting brackets.