Briggs & Stratton 597438 Governor Spring OEM Replacement Part

The Briggs & Stratton 597438 Governor Spring is a genuine OEM replacement part designed to maintain precise engine speed control in Briggs & Stratton small engines. The governor spring applies calibrated tension to the governor assembly, working in conjunction with the throttle linkage to keep the engine operating at a stable, consistent RPM under varying load conditions.

A worn or broken governor spring is one of the most common causes of engine over-speeding, surging, or erratic throttle behavior. Replacing it with a genuine Briggs & Stratton part restores proper governor function and ensures the engine returns to factory-spec performance.

Key Features:

• Genuine OEM Briggs & Stratton replacement part
• Maintains stable engine speed under changing loads
• Restores proper throttle response and governor function
• Engineered to exact factory specifications for precise fit and function
• Helps engine comply with applicable EPA emission standards
• Direct replacement for failed, stretched, or broken governor springs

Always verify compatibility using your engine model number before ordering. Many governor springs look similar but are calibrated differently — using the correct part number ensures accurate speed regulation and long-term reliability.