Shibby Engineering 67RC Rail Cap
2007.5-2012 Dodge 6.7L Cummins
✔ QuickShips by Next Business Day*
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
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