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Cummins ISL Fuel Injector 2011-2024: OEM 5579403RX ( Set of 6 )

CUMMINS ISL FUEL INJECTOR 2011-2024: OEM 5579403RX ( SET OF 6 )

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$3,570.00

CORE CHARGE:

$1,500.00
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 NUMBER5579403RX
PART TYPEFuel Injector
BRANDOEX Reman
ENGINE MAKECummins
ENGINE TYPEISL
YEAR2011-2024
PART NUMBER55579403RI-SET
ADDITIONAL NOTESOEX Reman- Inlcudeds injector and Fuel Connector
FILE ATTACHMENTS OEX REMAN

PRODUCT DESCRIPTION

This is a Remanufactured OEX Reman Fuel Injector, OEX Reman part number 55579403RI-SET ( OEM Part Number 5579403RX ). All parts are proudly remanufactured in the U.S.A. to the highest of OEM standards, and improvements are often applied to the original design in the remanufacturing process. This part is primarily made for a Cummins ISL, production years 2011-2024, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

Additional Notes: OEX Reman- Inlcudeds injector and Fuel Connector

OEM NUMBERS

Primary OEM5579403RX
Additional OEM2872127, 5579403RX

ADDITIONAL DETAILS

CONDITIONRemanufactured
UPC / Barcode00840490538139
WEIGHT6.00 LBS

SHIPPING OPTIONS

Ship Weight : 6.00 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.


Precision-deliver every mile with the Cummins ISL Fuel Injector Set — OEM 5579403RX, tailored for 2011–2024 ISL engines. Each injector in this six-pack is engineered for superior atomization and consistent fuel pressure, promoting clean combustion, sharper engine response, and enhanced fuel efficiency. Built to rigid OEM standards, this set ensures a seamless installation and dependable engine performance you can trust—mile after mile.

FITMENT CHART

YEARMAKEENGINE(S)
2011Cummins ISL
2012Cummins ISL
2013Cummins ISL
2014Cummins ISL
2015Cummins ISL
2016Cummins ISL
2017Cummins ISL
2018Cummins ISL
2019Cummins ISL
2020Cummins ISL
2021Cummins ISL
2022Cummins ISL
2023Cummins ISL
2024Cummins ISL

PEOPLE ALSO ASKS | BLOG(S)

When it’s time for injector service on your Cummins ISL engine, tackling all six at once isn’t just efficient—it’s smarter maintenance. The OEM 5579403RX injector set offers accuracy and reliability, ensuring smooth fuel delivery across every cylinder so your engine runs cleaner and more dependably.

  • Balanced Fuel Delivery Across All Cylinders
    Replacing injectors as a complete set restores even spray patterns and pressure, preventing cylinder misfires and ensuring a consistent, smooth engine rhythm.

  • Simplifies Diagnostics and Service
    Replacing all six injectors at once eliminates guesswork. You get uniform performance and side-step the headache of tracking down a single failing injector.

  • Improves Fuel Efficiency and Emission Control
    Consistent injector calibration helps maintain cleaner combustion and tighter emission output, supporting your engine’s environmental and operational goals.

  • Plug-and-Play OEM Fit
    Manufactured to meet Cummins specs, the OEM 5579403RX injectors install directly—no tweaking or custom adjustments are needed, making the replacement process seamless.

  • Worry-Free Core Program
    Supported by warranty coverage and a streamlined core return process, this set makes major maintenance manageable and cost-efficient.

Buying the OEM 5579403RX set of six injectors ensures accurate fuel delivery, smoother engine function, and a simplified, dependable replacement process. Go with Tamerx Diesel Parts for OEM quality that keeps your ISL engine running cleanly, consistently, and confidently.

Fuel injectors are essential to the efficiency and operation of modern internal combustion engines. They’re responsible for delivering precise amounts of fuel to the engine’s cylinders for optimal combustion. Like all engine components, fuel injectors wear over time. Understanding their typical lifespan helps ensure timely maintenance and avoids unexpected breakdowns.

Average Fuel Injector Lifespan

  • Typical Range: 50,000 to 100,000 Miles
    Most fuel injectors are designed to last between 50,000 and 100,000 miles, depending on usage, driving conditions, and fuel quality.

  • Fuel Type and Quality
    Contaminated or low-quality fuel can shorten the injector’s life due to debris and carbon buildup, leading to clogging or inefficient spray patterns.

  • Driving Habits and Environment
    Frequent short trips, idling, or stop-and-go traffic can place more stress on injectors than highway driving, potentially reducing lifespan.

  • Engine Maintenance
    Regular oil changes, fuel filter replacements, and injector cleanings can significantly extend injector service life by minimizing deposits.

  • Injector Type
    High-performance or direct-injection systems may wear out sooner than traditional port fuel injectors due to higher pressure demands and heat exposure.


While fuel injectors can often last the life of the engine, they aren’t immune to wear and contamination. Monitoring performance, using clean fuel, and sticking to a regular maintenance schedule are key to getting the most mileage from your injectors. If your engine is showing signs of reduced efficiency, misfires, or poor fuel economy, it may be time for inspection or replacement.

Have all six injectors cleaned and flow-checked professionally using ultrasonic or test bench methods to ensure consistency.

Neglect may lead to uneven wear, increased emissions, reduced power, and possible engine damage.

Contaminants can clog one or more injectors, causing misfires and damaging engine balance.

Low-quality fuel, infrequent filter changes, or contaminant exposure can shorten each injector’s life.

Cummins Fuel Injectors

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