Product Description
Hold rail pressure under hard load with the Exergy E07 00016 Race-Only Pressure Relief Valve (PRV). Calibrated to ~2400 bar (≈34,800 psi), this PRV is designed for competition/off-road Duramax and Cummins applications where elevated commanded rail pressure and transient spikes can pop an OE valve.
Key Benefits
- High clamp pressure (~2400 bar) helps prevent premature rail pressure bleed-off
- Stability for tuned and high-flow fuel systems in race-use environments
- Precision-calibrated by Exergy Performance for repeatability
- Direct replacement for the factory rail pressure relief valve
Fitment
- GM Duramax: LLY (2004.5–2005), LBZ (2006–2007 Classic), LMM (2007.5–2010)
- Ram Cummins: 6.7L (2007.5–2018+ race/competition applications)
- Vehicle-specific rail location and access vary by platform
What’s Included
- Exergy E07 00016 Race-Only Pressure Relief Valve (2400 bar)
- Seal/washer as applicable to application
Recommended Supporting Parts
For consistent supply and to match your fueling goals, pair with quality components:
Install Notes
- Race/Off-Road Use Only: Not legal for sale or use on pollution-controlled vehicles on public roads.
- Relieve fuel system pressure before service; wear eye/hand protection.
- Torque to manufacturer spec; check for leaks after priming.
- Custom tuning may be required to realize full benefits in competition setups.
Frequently Asked Questions
Q: Is this PRV street legal?
A: No. It is intended for race/off-road use only and is not emissions legal for public roads.
Q: Do I need custom tuning?
A: Many competition builds benefit from custom rail pressure targets and proper relief strategy. Work with your tuner.
Q: How does this compare to shimming the stock valve?
A: A calibrated Exergy PRV offers repeatable clamp pressure and reliability vs. inconsistent shim mods.
Q: What symptoms indicate my stock PRV is venting?
A: Falling commanded vs. actual rail pressure under load, surging, limp conditions, or relevant DTCs.
Q: Will this fix a weak supply side?
A: No. Ensure proper filtration and supply with a quality lift pump and healthy CP3/CP4 components.
About Exergy Performance
Exergy specializes in precision diesel fuel system components for Duramax and Cummins platforms. Explore more Exergy products here: Exergy at CPP Diesel.
