Heavy Duty Valve Springs and Retainers for your 7.3l Powerstroke with 165 lbs on the seat at 1.880 installed height. These springs are more than up to the task of controling the valves on your 7.3 upto 5500 RPM or 75lbs of Boost. Kit includes Springs , Locks , Retainers for everything needed to complete the task correctly.
