Pure Diesel Power, your number 1 diesel performance parts source!

Pure Diesel Power Price Match

live chat service provider

PDP Phone Number

PDP Email Signup


Free shipping on all orders over $150! Free Shipping on orders over $150! *Exclusions Apply

07.5-12 Dodge 6.7L Cummins Common Rail Fuel Plug

07.5-12 Dodge 6.7L Cummins Common Rail Fuel Plug




The Shibby Rail Cap is designed to “block-off” your factory pressure relief valve. Over time, factory pressure relief valves can leak and cause a drop in fuel rail pressure. This becomes even more evident in high performance applications. The Rail Cap will keep consistent pressure at the rail and not just return fuel to the tank. As an added bonus, the Rail Cap also works as a diagnostic tool when diagnosing “no-start” conditions. Installing the Rail Cap in place of a questionable factory relief valve can show if the OE component has failed.


  • Bolt-On Replacement
  • High Performance Upgrade & Diagnostic Tool
  • Excellent for High Pressure / Race Applications

Shibby part number: 67RC

No posts found

Customers Also Bought