Exergy E07 00012 Duramax Fuel Pressure Relief Valve 2000 Bar (~29,000 PSI) LLY LBZ LMM 6.7 

Fitment: 6.7 Cummins - LLY/LBZ/LMM Duramax Dual Stage PRV's

Fuel pressure reliefs are a important part to any high performance diesel fuel system. Exergy's reliefs are fine tuned to allow you to run your maximum desired rail pressure with out exposing your system to dangerous pressure spikes. You don't have to sacrifice performance to have safety built into your fuel system.