
Cummins QSB 6.7L High Pressure Fuel Rail 2018-2024: OEM 5450722
CUMMINS QSB 6.7L HIGH PRESSURE FUEL RAIL 2018-2024: OEM 5450722

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY
1M MILES OR 1 YEAR
PRODUCT DESCRIPTION
This is a Genuine New, Bosch High Pressure Fuel Rail, Bosch part number 5450722TX ( OEM Part Number 5450722 ).This part is primarily made for a Cummins QSB 6.7L, production years 2018-2024, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here
OEM NUMBERS
| Primary OEM | 5450722 |
| Additional OEM | 5450722 |
ADDITIONAL DETAILS
| CONDITION | Genuine New |
| UPC / Barcode | 00840490548145 |
| WEIGHT | 12.00 LBS |
SHIPPING OPTIONS
Ship Weight : 12.00 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.
The customer, or parts buyer, is responsible for any shipping costs associated with core returns unless otherwise specified in the product listing/detail page. Tamerx Diesel Products offers prepaid UPS shipping labels (SKU numbers UPS-CR1 and UPS-CR2) for use in returning your core that are available for purchase on our website during your shopping/order process.
The shipping label you will need to use for the core return is dependent upon what part you are purchasing. UPS-CR1 is good for cores weighing up to 20 pounds. UPS-CR2 is appropriate for shipping cores weighing 21 pounds or more. You must include enough information with the core return that clearly identifies it as a.) a Core Return, and b.) contains enough information we can use to clearly associate the core return with your order. Including a copy of the invoice or packing slip that came with the original shipment, clearly marked "Core Return", is ideal. Alternately, you can include a note marked as "Core Return" that includes your order number, full name and address, and phone number or other contact information. Failure to include this information with your returned core will most likely delay any due core credit being issued and/or delay any applicable warranty activation. Core returns need to be for the exact part purchased and cannot be damaged. Substituting another part in place of the part you have purchased is not acceptable.
All fluids must be drained.
If you have purchased a set or a parts package, you will need to return cores for all components of the set. For example, if you have purchaed a high pressure oil pump with an IPR valve, you will need to return both HPOP and IPR valve cores to receive proper credit. If you have purchased an EGR cooler/EGR valve package, your core return must consist of an EGR cooler core and an EGR valve core, or core credit will not be given.
Core Charges are often mandated by state legislature, and, as such, the actual core charge and taxes on the charge may vary depending on the state in which you buy your part. The Tamerx Diesel Products core charge presented to you online today with your item is representative of the most common core charge.
Kick off dependable fuel delivery with the Cummins QSB 6.7L High Pressure Fuel Rail 2018–2024, OEM Part Number 5450722, designed for select QSB 6.7L engine applications. This high pressure fuel rail delivers fuel evenly and consistently to the injectors, supporting stable combustion and smooth engine function. Manufactured to meet OEM specifications, it ensures precise fitment and reliable construction for demanding commercial and industrial environments. A compromised or leaking fuel rail can contribute to uneven fuel distribution, hard starting, or injector performance issues, making timely replacement important. Tamerx Diesel Products LLC supplies quality diesel components to help keep your Cummins engine operating efficiently and reliably.
FITMENT CHART
| YEAR | MAKE | ENGINE(S) | ||||
|---|---|---|---|---|---|---|
| 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 | ||||
| 2024 | Cummins | QSB 6.7L | ||||
PEOPLE ALSO ASKS | BLOG(S)
Consistent fuel pressure is essential in modern common rail diesel engines, and the Cummins QSB 6.7L High Pressure Fuel Rail OEM 5450722 plays a central role in delivering that stability. Designed for 2018–2024 QSB 6.7L applications, this component serves as the main distribution channel for high-pressure fuel.
The primary role of the high pressure fuel rail is to store and evenly distribute pressurized fuel to each injector. Fuel from the high-pressure pump enters the rail, where it is maintained at a controlled pressure until the injectors are commanded to deliver it into the cylinders.
The Cummins QSB 6.7L High Pressure Fuel Rail is responsible for:
- Maintaining stable high fuel pressure
- Supplying pressurized fuel to all injectors
- Supporting precise fuel metering
- Working with rail pressure sensors
- Helping ensure consistent combustion
By keeping fuel pressure steady, the rail allows the engine control module (ECM) to manage injection timing and quantity accurately. Fluctuations in rail pressure can lead to uneven combustion, rough operation, or fault codes.
The OEM 5450722 fuel rail is engineered specifically for Cummins QSB 6.7L engines, ensuring proper fitment and compatibility with factory fuel system components.
When functioning correctly, it supports balanced fuel delivery, smooth engine operation, and reliable performance across industrial and equipment applications.
The high pressure fuel rail delivers pressurized fuel from the pump to the injectors. Because it operates under extremely high pressure, its condition is critical to proper engine performance.
Whether it is serviceable depends on the type of issue.
In some cases, the high pressure fuel rail may be serviceable if the problem involves:
- A faulty fuel rail pressure sensor
- Damaged wiring or corroded connectors
- Loose fittings or minor external leaks at connection points
- Contamination that has not caused internal damage
If the rail body itself is structurally sound, correcting related components may restore proper operation.
However, replacement is typically required if there is:
- Cracking in the rail body
- Internal corrosion
- Persistent high or low fuel pressure after diagnostics
- Metal shavings from a failing fuel pump
- Structural damage from over-pressurization
Because the rail holds fuel at very high pressure, even small structural weaknesses can pose safety risks.
A professional inspection is essential. A technician will test fuel pressure, inspect for leaks, review fault codes, and check for contamination before determining whether the rail itself must be replaced.
Early diagnosis improves the chance that only related components need attention rather than full rail replacement.
The Cummins 5450722 High Pressure Fuel Rail supplies and distributes high-pressure fuel to the injectors as part of the common-rail fuel system.
Yes — the Cummins 5450722 High Pressure Fuel Rail is engineered to match original equipment mounting and connections for direct replacement.
The Cummins 5450722 Fuel Rail mounts along the cylinder head and ties into the engine’s high-pressure common rail fuel system.
Signs can include fuel pressure fault codes, uneven injector delivery, or diagnostic alerts linked to high-pressure fuel delivery issues.











