Mechanical advance spring kit for points-type distributors used on 1959-up Dodge, Plymouth, and Chrysler 6- and 8-cylinder engines. By replacing the original stiff distributor springs with these lighter springs, mechanical advance comes in earlier than stock—improving throttle response, low-end torque, and overall horsepower depending on the engine setup. A simple but effective tuning upgrade often overlooked during ignition optimization.

• Function: Allows quicker mechanical timing advance than stock
• Benefit: Increases torque and overall performance
• Application: Points ignition distributors
• Fitment: 1959-up Mopar 6- and 8-cylinder engines