Fuel Pressure Relief Valve (FRPV), New
Fits 2019-2022 Dodge Ram 2500, 3500, 4500, 5500 with 6.7L Cummins Diesel
Genuine Bosch Product
Direct-Fit Replacement
This Bosch OEM Fuel Pressure Regulator / Fuel Rail Pressure Relief Valve (FRPV/PRV), part number 0 281 006 250, is built specifically for the 2019–2022 Ram 6.7L Cummins common‑rail fuel system to maintain correct rail pressure and protect high‑pressure components from damage under extreme load. As a genuine Bosch part, it matches original equipment calibration, threads, and sealing surfaces so it installs cleanly into the factory fuel rail and immediately brings fuel pressure control back within OE spec.
2019–2022 Ram 2500 6.7L Cummins diesel.
2019–2022 Ram 3500 6.7L Cummins diesel.
2019–2022 Ram 4500 6.7L Cummins diesel.
2019–2022 Ram 5500 6.7L Cummins diesel.
This valve is engineered for the high‑pressure common‑rail system used on these late‑model Cummins engines and is not a universal regulator; always verify by part number 0 281 006 250 or OE cross‑reference before ordering.
Manufacturer: Bosch (genuine OE supplier).
Bosch part number: 0 281 006 250 (also shown as 0281006250).
Type: Fuel Rail Pressure Relief Valve / Fuel Pressure Regulator (PRV/FRPV).
Condition: New, not remanufactured.
Application: 2019–2022 Ram 6.7L Cummins high‑pressure common‑rail system.
Construction: High‑strength steel body with precision‑ground sealing and calibrated internal spring/valve assembly for exact opening pressure.
Emissions: Designed to meet OE emissions performance when used as a direct replacement in the factory system.
The 6.7L Cummins relies on very high fuel rail pressures—often well over 20,000 psi—to achieve clean combustion, torque, and quick throttle response, and that pressure must be tightly regulated and safely limited. The Bosch PRV acts as a mechanical safety and control device, venting excess pressure back to the return side when rail pressure exceeds its calibrated limit so the pump, injectors, and rail are not overstressed or damaged.
A failing or leaking PRV can cause the rail to dump pressure too early (or not relieve at all), which shows up as hard acceleration issues, derates, and diagnostic trouble codes related to fuel rail pressure being too high or too low. Replacing the worn valve with a new Bosch unit restores the correct pressure window and prevents the ECM from constantly fighting an out‑of‑spec mechanical limit.
Genuine Bosch OE quality
Bosch is the original equipment supplier for many OEM diesel fuel system components, and this valve is built to the same design and test standards as the factory‑installed part. Using Bosch OE helps maintain rail pressure accuracy, injector life, and emissions compliance compared to many off‑brand regulators.
Direct‑fit replacement for Ram 6.7L Cummins
Thread size, sealing cone, and connector layout are matched to the 2019–2022 Cummins rail, so no adapters or modifications are needed during installation. A direct mechanical fit reduces installation time, lowers the chance of leaks, and avoids fitment guesswork common with generic valves.
Restores proper fuel rail pressure control
A worn PRV can bleed pressure under load or fail to relieve when commanded, causing unstable rail pressure and triggering limp‑mode. Installing a new, properly calibrated valve lets the ECM maintain commanded fuel pressure more accurately, resulting in smoother power delivery, better throttle response, and consistent performance.
Helps prevent fuel system damage under extreme pressure
Under heavy towing, hard acceleration, or tuning, rail pressure can spike, and the PRV is the last line of defense to keep those spikes from damaging the rail, injectors, or high‑pressure pump. A fresh, correctly rated relief valve gives the system a reliable mechanical safety margin instead of relying solely on electronic control.
Reduces limp‑mode and derate events
Faulty or weak PRVs are known contributors to limp‑mode conditions when the ECM detects rail pressure too low under demand or too high compared to the target. Replacing the valve can resolve repeated derates tied to rail pressure codes without replacing more expensive components if the rest of the system checks out.
Supports clean combustion and emissions performance
Stable fuel pressure is critical for precise injector timing and quantity, which affects soot output, NOx, and aftertreatment load. With correct rail pressure control restored, the engine can more reliably meet its designed emissions profile and keep aftertreatment components working efficiently.
New unit with no core charge
This is a brand‑new Bosch valve and does not require returning a core, simplifying ordering and installation logistics. No waiting on core credits or worrying about core damage fees.
A weak, stuck, or leaking fuel rail pressure relief valve on a 6.7L Cummins can cause a range of driveability problems and codes. Common real‑world symptoms include:
Hard acceleration with sudden power loss or derate, especially when towing or under heavy load.
Surging, hesitation, or “choppy” power delivery as rail pressure oscillates.
Extended crank or hard starting, particularly hot, when rail pressure cannot build or hold as commanded.
Noticeable loss of peak power or inability to reach expected boost/fuel demand.
Check Engine Light illuminated with fuel‑pressure‑related codes.
Because the PRV sits at the end of the fuel rail and directly vents pressure, even a small internal leak can bleed off pressure enough to cause intermittent problems that become worse over time. Conversely, if the valve sticks and does not relieve pressure when needed, rail pressure can spike above its intended range, which risks injector and pump damage.
Exact codes will depend on scan tool and model‑year calibration, but PRV issues typically show up as fuel rail pressure too high or too low relative to the ECM’s target. Some of the most commonly associated OBD‑II codes on high‑pressure diesel systems include:
P0087 – Fuel Rail/System Pressure Too Low
Indicates the ECM commanded higher pressure than the rail can reach or maintain, often due to excessive leakage at the PRV, injectors, or other components.
P0088 – Fuel Rail/System Pressure Too High
Indicates the actual rail pressure is higher than commanded, which can result from a stuck‑closed PRV, control issues at the high‑pressure pump, or sensor faults.
P1093 or manufacturer‑specific “low fuel rail pressure under load” codes
On many diesel platforms, including common‑rail trucks, a weak relief valve that dumps under heavy throttle will set under‑load low pressure codes similar to P1093 or OEM‑specific variants.
Other fuel system codes may accompany these, especially if there are issues with the rail pressure sensor, fuel supply restrictions, or pump wear; proper diagnosis should always consider the entire system and not just the PRV in isolation.
NorCal Diesel Performance lists this Bosch fuel pressure regulator with a 1‑year, unlimited‑mile warranty when used under normal operating conditions. This coverage is intended to protect against defects in materials and workmanship in the valve itself, not damage caused by contamination, improper installation, or other failed fuel system components.
As with most performance diesel fuel parts, once the valve has been installed and exposed to fuel, it is typically non‑returnable except through warranty if a defect is confirmed. Customers should retain proof of purchase and follow NorCal Diesel Performance’s warranty and return procedures for any claims.
A professional‑quality install will help get maximum life and correct operation from the new Bosch PRV.
Always depressurize the fuel system per factory service procedure before loosening high‑pressure fittings.
Work with surgically clean tools and surfaces; high‑pressure common‑rail components are very sensitive to dirt and metal contamination.
Verify rail and line threads are clean and undamaged before installing the new valve.
Torque the valve to factory specification—over‑ or under‑tightening may cause leaks or stress on the valve body.
After installation, clear any stored codes and monitor commanded vs. actual rail pressure with a scan tool to confirm correct operation.
Like other diesel fuel components, handling and installing this valve may expose users to fuel and chemicals listed under California Proposition 65 as potential carcinogens or reproductive hazards. Proper PPE—gloves, eye protection, and adequate ventilation—should be used, and fuel should be captured in appropriate containers and disposed of according to local regulations.
The table below highlights how this genuine Bosch valve compares to common aftermarket or “no‑name” alternatives for the same application.
| Feature | Bosch 0 281 006 250 PRV (this product) | Typical generic aftermarket PRV |
|---|---|---|
| Manufacturer | Bosch, OE diesel systems supplier | Varies; non‑OE manufacturers |
| Intended application | 2019–2022 Ram 6.7L Cummins, calibrated to OE spec | Often marketed as “fits multiple years” with broad calibration |
| Calibration accuracy | Matches OE opening pressure and flow characteristics | May deviate from OE spec, causing pressure drift |
| Quality control | End‑of‑line tested to OE standards | QC varies, limited data on test standards |
| Impact on emissions | Designed to maintain factory emissions performance | May affect rail pressure enough to alter combustion |
| Warranty | 1‑year, unlimited‑mile via NorCal Diesel Performance | Often shorter or limited, policy varies |
| Core charge | None; new part | Typically none, but varies |
Q: Will this fit my 2019–2022 Ram 2500 with 6.7L Cummins?
A: Yes, this Bosch valve is specifically listed for 2019–2022 Ram 2500/3500/4500/5500 trucks equipped with the 6.7L Cummins engine; always confirm by matching the Bosch part number 0 281 006 250 or the OE reference in your service information.
Q: Is this an OEM or aftermarket piece?
A: This is a genuine Bosch fuel rail pressure relief valve, produced by the same company that supplies OE fuel system components to major diesel manufacturers, and is designed as a direct replacement for the factory part.
Q: What problems can a bad fuel pressure relief valve cause?
A: A failing PRV can lead to low or high rail pressure conditions under load, resulting in power loss, surging, hard starting, limp‑mode events, and codes such as P0087 (pressure too low) or P0088 (pressure too high) along with other fuel system errors.
Q: If this valve is bad, do I need to replace my injectors or high‑pressure pump too?
A: Not necessarily; the PRV is one component in the system, and many trucks only need the valve replaced when it is clearly leaking or stuck, but any diagnosis should include checking supply pressure, filters, rail pressure sensor data, and pump performance before assuming injectors or the pump are faulty.
Q: Is tuning or increased rail pressure safe with this valve?
A: This valve is calibrated to OE pressure limits for the 6.7L Cummins; moderate tuning that stays within or near factory pressure targets is typically fine, but aggressive “high‑rail” tunes can stress any OEM valve and may reduce its life or push it beyond its intended operating range. For heavily modified or competition trucks, a tuner or diesel specialist should confirm whether an alternate strategy or hardware is appropriate.
Q: What is the warranty coverage?
A: NorCal Diesel Performance lists this Bosch regulator with a 1‑year, unlimited‑mile warranty against defects in materials and workmanship, subject to their standard terms and the normal exclusions for contamination, improper installation, or misuse.
Q: Can I return this after installing it if my issue turns out to be something else?
A: As with most diesel fuel system parts, once the valve has been installed and exposed to fuel it is generally not returnable except through the warranty process if it is found defective, so it is strongly recommended to complete proper diagnostics before installation.
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