Performance Valve Springs & Retainer Kit XDP Fuel Injectors 9L 12V Cummins Engines

9L 12V Cummins Engines

To ensure optimum performance and reliability all the latest design and engineering updates are implemented

XDP's HD Gear Reduction Starters feature a motor that is faster

***Must send in cores first or add refundable core charge to your order***

2008-2010 Powerstroke

Performance Valve Springs & Retainer Kit XDP Fuel Injectors 9L 12V Cummins EnginesFortify the valvetrain in your 1989 1998 Dodge 5. 9L Cummins when you install the XDP Performance Valve Springs and Retainer Kit XD389. Valve springs are a vital upgrade that are often ignored in many performance builds. The stock valve springs in your Cummins engine are not designed to handle the increased engine RPM or higher boost levels that are common in modified applications. Even typical upgrades like an exhaust brake, aftermarket turbocharger,