Modifying your diesel or gas truck for optimum performance means upgrading all the components that work within and complement the truckâ€™s engine. From the intake system to the exhaust, you need aftermarket performance truck parts that deliver maximum flow efficiency and stellar performance. Increase your truckâ€™s power, torque, and throttle response with stainless, ceramic coated pipes, high flow headers, non-restrictive manifolds, and more. Step on the gas and set those horses running. Youâ€™ll also find shiny new valve covers and gaskets at Performance Truck Products â€“ in case you want some impressive truck add-ons. Your Cummins or Powerstroke will look dressed up each time you pop the hood. Shop for your performance engine parts here and enjoy fast, free shipping with every order.