2004.5-2005 GM/CHEVROLET DURAMAX 6.6L LLY NEW FUEL PRESSURE REGULATOR MPROP VALVE FOR CP3 PUMP
Restore accurate fuel delivery and CP3 pump performance on your 2004.5–2005 GM/Chevrolet 6.6L Duramax LLY with this New MPROP Fuel Pressure Regulator Valve. Also known as the Fuel Pressure Control Valve (FPRV) or Metering Valve, this component is crucial for maintaining proper common rail fuel pressure.
Mounted directly on the CP3 injection pump, the MPROP regulates fuel flow into the high-pressure chamber. When this valve becomes contaminated or worn, it can cause a range of drivability issues, including rough idle, surging, low rail pressure (P0087), hard starting, and poor performance. This brand-new replacement restores OEM-level control without the need for tuning or reprogramming.
Features & Benefits:
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Fits 2004.5–2005 Silverado/Sierra 2500HD & 3500HD 6.6L Duramax LLY
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Controls CP3 fuel metering and rail pressure
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Resolves common rail pressure codes like P0087, P1093, and hard start issues
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New OEM-style unit – not remanufactured
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Includes integral mesh filter screen to prevent contamination
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Restores fuel economy and throttle response
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Improves injector performance and idle quality
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Quick installation without tuning or calibration
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Compatible with stock or tuned LLY trucks
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A vital replacement for CP3 pump maintenance
Truck Compatibility / Applications:
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2004.5 Chevrolet Silverado 2500HD / 3500HD 6.6L Duramax LLY
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2005 Chevrolet Silverado 2500HD / 3500HD 6.6L Duramax LLY
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2004.5–2005 GMC Sierra 2500HD / 3500HD 6.6L Duramax LLY
This New Fuel Pressure Regulator MPROP Valve is a must-have component when servicing the CP3 fuel system on LLY Duramax trucks. It restores smooth fuel regulation, eliminates common drivability faults, and is designed to meet or exceed OEM specifications.
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California Proposition 65 Warning:
This product may expose you to chemicals including petroleum-based sealants and electrical components, known to the State of California to cause cancer, birth defects, or other reproductive harm.
For more information, visit: www.P65Warnings.ca.gov
GM Part# 97369850, supersedes Part# 0928400574 / Bosch Part # 1 465 ZS0 058
- DTC P0087 Fuel Rail Pressure (FRP) Too Low
- DTC P0088 Fuel Rail Pressure (FRP) Too High
- DTC P0089 Fuel Pressure Regulator Performance
- DTC P0090 Fuel Pressure Regulator Control Circuit
- DTC P1093 Fuel Pressure - Fuel Rail Pressure Low During Power Enrichment. This could be caused by a plugged fuel filter.
