Piston Spring (Red & Green) | AUC 4826 | SU Specialists

Genuine SU piston spring — Red & Green. Spring weight: heavy/medium combination. The piston spring controls the rate at which the piston rises in response to airflow. Spring selection affects mixture richness and throttle response — choose the correct colour for your application. Manufactured to original SU specification.

Part Number: AUC 4826