Performance Valve Springs & Retainer Kit XDP Early This tube is made to

This tube is made to meet the OE manufacturer's quality specifications and comes with a replacement O-ring

each injector is carefully modified to your desired size then balanced precisely as a matched set to ensure smooth running and highly efficient results

but still are looking a large boost in performance

bead-rolled 3 inch steel pipe

both automatic and manual equipped transmissions

Performance Valve Springs & Retainer Kit XDP Early This tube is made toFortify 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,