
Cummins QSB 6.7L Fuel Rail Pressure Regulator DRV 2017-2023: OEM 5291754
CUMMINS QSB 6.7L FUEL RAIL PRESSURE REGULATOR DRV 2017-2023: OEM 5291754

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY
1M MILES OR 1 YEAR
PRODUCT DESCRIPTION
This is a New, Tamerx Fuel Rail Pressure Regulator DRV, Tamerx part number 5291754TX ( OEM Part Number 5291754 ).This part is primarily made for a Cummins QSB 6.7L, production years 2017-2023, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here
OEM NUMBERS
| Primary OEM | 5291754 |
| Additional OEM | 5291754 |
ADDITIONAL DETAILS
| CONDITION | New |
| UPC / Barcode | 00840490539495 |
| WEIGHT | 1.00 LBS |
SHIPPING OPTIONS
Ship Weight : 1.00 LBS
UPS Ground, 2nd Day Air, Next Day Air
SHIPPING POLICY
Tamerx Diesel Products ships via UPS Ground. Next day air shipping can be arranged for a reasonable price of anywhere from $50.00 - $100.00 depending on the weight of the product and your location. We will do everything we can to make sure that you get the service you need. We understand how important it is to receive your order as quickly as possible.
In most cases Tamerx Diesel Products only needs one address, as long as your product is shipping to the same location as your billing information. In order to eliminate credit card fraud, your billing information must match the credit card you provide.
The terms, conditions, and details of our warranty vary from product to product. Specific warranty details can be found below.
Tamerx Diesel Products provides a replacement warranty on all of our parts. The duration and mileage limitations of the warranty vary by product and are specified on the product's detail page/item listing.
Please note that the warranty covers replacement of the part and the cost of shipping the replacement part to you only. It does not cover any shop, labor, towing, or any similar or related costs. This is not a "money back guarantee".
If you experience a problem with your part or it is not functioning properly, the correct warranty procedure is to call us at (510) 257-1777 (8:00 AM - 5:00 PM ET Monday through Friday). Be sure to have your order number and/or other relevant order information ready so we can easily locate your order and resolve your issue as quickly as possible. From that point, we will review with you any troubleshooting steps that may need to be taken and other areas or systems that can be checked to rule out external problems contributing to your part's issue. If a replacement is determined to be necessary, we will then arrange for your replacement part to ship out ASAP and issue any necessary return shipping labels and/or documents.
As is the case for the majority of the diesel products sold on Tamerx Diesel Products, your part's warranty is active as soon as you install it. In some other cases, warranty activation is contingent upon you sending us your core (i.e., your old part). Tamerx Diesel Products will provide you a return shipping label for parts that have a warranty with a core return condition. When we have received your core return, the part's warranty coverage begins. We reserve the right to void the product warranty if your core is not received within the allotted time, or if it isn't received at all. If the warranty for the diesel part you are purchasing has a core return requirement, it will be clearly noted on the product detail page/item listing.
What is a Core Charge?
A core charge (also called "core deposit") is similar to the deposit you might pay for a can or bottle of soda and is a standard requirement in the auto parts industry. For example, in many states, to promote recycling, you pay a deposit when you purchase a can of soda and receive your deposit back when you return the empty can. Many automotive parts have a core charge, or core price, that works in essentially the same way as a soda can deposit.
30 Day Core Charge Hold
You authorize Tamerx Diesel Products, to hold your credit card for the specified core charge amount and that you agree to return your core with 30 days of receiving the purchased part. When we have received your core return, the hold is released and the core charge payment is canceled.
"This Product Doesn't Have a Core"
Introduced for 2017–2023 Cummins QSB 6.7L engine applications, the OEM 5291754 Fuel Rail Pressure Regulator DRV is engineered to meet original equipment specifications for accurate fit and dependable function. This regulator is tasked with controlling fuel rail pressure within the common rail system, ensuring that fuel delivery remains consistent under varying engine conditions. Built with quality internal components and designed to withstand the demands of modern diesel fuel systems, it supports smooth and reliable operation across a wide range of duty cycles. Precise regulation of fuel pressure helps maintain stable combustion and contributes to controlled emissions output. Tamerx Diesel Products LLC offers this Cummins QSB 6.7L fuel rail pressure regulator as a trusted solution for maintaining consistent fuel system operation.
FITMENT CHART
| YEAR | MAKE | ENGINE(S) | ||||
|---|---|---|---|---|---|---|
| 2017 | Cummins | QSB 6.7L | ||||
| 2018 | Cummins | QSB 6.7L | ||||
| 2019 | Cummins | QSB 6.7L | ||||
| 2020 | Cummins | QSB 6.7L | ||||
| 2021 | Cummins | QSB 6.7L | ||||
| 2022 | Cummins | QSB 6.7L | ||||
| 2023 | Cummins | QSB 6.7L | ||||
PEOPLE ALSO ASKS | BLOG(S)
The Cummins QSB 6.7L Fuel Rail Pressure Regulator (DRV) OEM 5291754 is a precision fuel system component designed for Cummins QSB 6.7L engines built between 2017 and 2023. Its primary purpose is to control and maintain correct fuel rail pressure within the engine’s high-pressure common rail fuel system.
In a common rail diesel system, fuel is pressurized by a high-pressure pump and stored in a shared “rail” before being delivered to the fuel injectors. To ensure consistent performance and efficient combustion, the pressure inside this rail must be precisely regulated under changing engine speed and load conditions.
The fuel rail pressure regulator (DRV) does this by:
- Monitoring fuel rail pressure via feedback from sensors
- Adjusting fuel return flow back to the tank
- Helping the high-pressure pump maintain target rail pressure
- Supporting proper injector operation
- Working with the engine control module (ECM) for optimized fuel delivery
When the regulator senses that rail pressure is too high, it opens an internal bypass to allow excess fuel to return to the tank or low-pressure side of the system. When pressure drops, the regulator reduces bypass flow so pressure can rise to the correct level.
The OEM 5291754 regulator is engineered to meet Cummins factory specifications, ensuring accurate control and seamless integration with other fuel system components such as the high-pressure pump, fuel rail, and injectors.
In summary, the Cummins QSB 6.7L Fuel Rail Pressure Regulator OEM 5291754 is essential for precise fuel pressure management, stable combustion, and reliable engine operation in modern common rail applications.
The Fuel Rail Pressure Regulator, often called the DRV (Diesel Regulator Valve), controls fuel pressure inside the high pressure fuel rail. When it begins to fail, fuel delivery can become unstable and affect overall engine operation.
There is no fixed replacement interval. Instead, the DRV should be replaced when symptoms appear and diagnostics confirm it is no longer regulating pressure correctly.
Common signs it may be time for replacement include:
- Hard starting or extended cranking
- Rough idle
- Sudden engine stalling
- Loss of acceleration
- Check engine light with fuel pressure codes
- Fluctuating or unstable rail pressure readings
If fuel pressure is too high or too low, the engine control module may trigger fault codes and place the engine into a reduced operation mode.
Before replacing the DRV, a proper inspection is important. A technician will typically:
- Scan for diagnostic trouble codes
- Monitor live fuel rail pressure data
- Inspect wiring and electrical connectors
- Check for contamination in the fuel system
In some cases, wiring issues or a failing fuel pump can mimic regulator failure. Confirming the root cause helps prevent unnecessary replacement.
If testing shows the DRV cannot maintain consistent pressure, replacement is usually the safest and most reliable solution.
Yes, the 5291754 regulator DRV is designed to match factory fuel rail fittings and electrical connectors.
Signs such as unstable fuel rail pressure or diagnostic codes related to fuel control may suggest inspection.
Yes, the 5291754 regulator DRV plays a role in the Cummins fuel management system by assisting with pressure control.
A properly functioning 5291754 regulator helps maintain accurate fuel pressure signals for stable engine control.





































































































































































































































