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Cummins ISB 4.5 High Pressure Fuel Rail 2019-2022: OEM 4981367

CUMMINS ISB 4.5 HIGH PRESSURE FUEL RAIL 2019-2022: OEM 4981367

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$449.00

CORE CHARGE:

$100.00
iCORE DISCLAIMER: The CORE charge is a 30 day hold and will not be processed as long as the CORE is returned within 30 days. If you do not have a CORE or fail to return the CORE within 30 days, the CORE charge hold amount will be processed at that time.

AVAILABILITY IN STOCK
OEM NUMBER4981367
PART TYPEHigh Pressure Fuel Rail
BRANDBosch
ENGINE MAKECummins
ENGINE TYPEISB 4.5
YEAR2019-2022
PART NUMBER4981367TX

PRODUCT DESCRIPTION

This is a Genuine New, Bosch High Pressure Fuel Rail, Bosch part number 4981367TX ( OEM Part Number 4981367 ).This part is primarily made for a Cummins ISB 4.5, production years 2019-2022, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

OEM NUMBERS

Primary OEM4981367
Additional OEM0 445 224 048, 4981367

ADDITIONAL DETAILS

CONDITIONGenuine New
UPC / Barcode
WEIGHT12.00 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.


Boost your Cummins ISB 4.5L with precision-engineered power using the High-Pressure Fuel Rail (2019–2022), OEM 4981367. Crafted to rigorous OEM standards, this fuel rail delivers consistent, high-pressure performance—ensuring smoother starts, sharper throttle response, and maximum engine efficiency. Ruggedly built for long-haul strength and designed for seamless plug-and-play fitment, it's the critical upgrade that keeps your engine firing on all cylinders—mile after confident mile.

FITMENT CHART

YEARMAKEENGINE(S)
2019Cummins ISB 4.5
2020Cummins ISB 4.5
2021Cummins ISB 4.5
2022Cummins ISB 4.5

PEOPLE ALSO ASKS | BLOG(S)

In the Cummins ISB 4.5 (2019–2022), the high‑pressure fuel rail is the linchpin of your engine’s fuel system—it ensures steady, accurate pressure to the injectors for efficient, clean combustion. If something goes wrong with this component, it’s often noticeable through drivability issues or engine trouble codes. That’s where the OEM 4981367 fuel rail comes in, offering a reliable, factory‑grade replacement to restore seamless fuel delivery.

Key Indicators of Fuel Rail Problems – What to Look For:

  • Starting Delays or Failures — Inadequate pressure makes starting slow or inconsistent.

  • Erratic Idling — Fluctuating rail pressure can result in rough or uneven idle behavior.

  • Fuel Leaks — Visible dripping or crusted fuel around the rails suggests seals have failed.

  • Service Engine Alerts — Fault codes related to pressure discrepancies often link back to a worn rail.

  • Reduced Fuel Efficiency — Combustion inefficiencies from pressure issues cause higher fuel consumption.

Why OEM 4981367 Stands Out for Replacements:

  • Tailored specifically for Cummins ISB 4.5 engines (2019–2022), ensuring plug-and-play compatibility.

  • Built to handle high-pressure, high-duty cycles with materials engineered for durability.

  • Helps sustain optimal injector performance for cleaner and more stable power delivery.

  • Minimizes risk of expensive downstream damage to injectors or pumps.

  • Provides the peace of mind that comes with investing in genuine OEM quality.


When your ISB 4.5 exhibits any of the warning signs, addressing the high‑pressure fuel rail is a smart strategy. The OEM 4981367 Fuel Rail delivers dependable performance and protects your entire fuel system against costly breakdowns. Lean on TamerX Diesel Parts for trusted OEM components—keeping your engine strong, efficient, and ready for the road.

The high-pressure fuel rail plays a critical role in delivering consistent fuel pressure to the injectors in modern diesel and gasoline engines. While it's built to be durable, it can still develop issues over time due to contamination, wear, or pressure fluctuations. Knowing when and how often to service the fuel rail is essential to maintaining optimal engine performance and avoiding costly repairs.

Recommended Service Intervals

  • Inspection Every 100,000 to 150,000 Miles
    Most manufacturers don't specify frequent servicing for the fuel rail itself, but it's wise to inspect it around the 100,000 to 150,000-mile mark—especially if the engine operates in demanding conditions.

  • When Replacing Injectors or Fuel Pump
    Whenever injectors or high-pressure fuel pumps are replaced, it’s a good idea to inspect and clean the fuel rail to remove any residual debris or contaminants that may affect the new components.

  • If Experiencing Fuel Pressure-Related Trouble Codes
    If the engine control module (ECM) throws codes related to fuel pressure, or if symptoms like hard starting, power loss, or misfiring appear, the fuel rail should be tested and serviced.

  • During Routine Fuel System Service
    As part of preventive maintenance, technicians may recommend cleaning the fuel rail when servicing the fuel system—especially if fuel filter replacement intervals have been missed.

  • After Fuel Contamination Incidents
    If the engine has been exposed to poor-quality or contaminated fuel, immediate inspection and cleaning of the high-pressure fuel rail are recommended to prevent long-term damage.

Why Servicing the Fuel Rail Matters

  • Prevents Injector Damage
    Clean fuel rails help ensure even fuel distribution and reduce stress on fuel injectors.

  • Protects Against Clogs and Pressure Drops
    Internal residue or debris can reduce fuel pressure and cause uneven injector performance, leading to rough idling or reduced power.

  • Improves Overall Fuel System Efficiency
    Maintaining a clean, leak-free rail ensures optimal spray pattern and combustion, supporting engine efficiency and emission control.

While the high-pressure fuel rail isn’t a component that requires frequent direct maintenance, it should be inspected and cleaned at key milestones or when other parts of the fuel system are being serviced. By incorporating fuel rail checks into your broader maintenance routine, you help ensure consistent performance, longer injector life, and reliable fuel delivery for the long haul.

Fuel seepage or cracks around joints or connections can indicate pressure seal failure.

Ensure that all seals and fittings are secure and that the rail aligns properly with injectors for tight sealing.

Inconsistent rail pressure leads to uneven performance, surging, and difficulty in maintaining engine smoothness.

Excess heat may cause rail deformation or seal failure, while freezing conditions can restrict oil pass-through.

Cummins High Pressure Fuel Rails

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