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Cummins QSK45, QSK60 Fuel Injector 2001-2015: OEM 4326781RX

CUMMINS QSK45, QSK60 FUEL INJECTOR 2001-2015: OEM 4326781RX

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$1,195.00

-
+

CORE CHARGE:

$1,000.00
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 NUMBER 4326781RX
PART TYPE Fuel Injector
BRAND Tamerx Diesel Products
ENGINE MAKE Cummins
ENGINE TYPE QSK45, QSK60
YEAR 2001-2015
PART NUMBER 4326781RM

PRODUCT DESCRIPTION

This is a Remanufactured Tamerx Fuel Injector, Tamerx part number 4326781RM ( OEM Part Number 4326781RX ). 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 QSK45, QSK60, production years 2001-2015, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

OEM NUMBERS

Primary OEM 4326781RX
Additional OEM 3766446, 4002145, 4087894, 4088428, 4326781RX, 4928346

ADDITIONAL DETAILS

CONDITION Remanufactured
UPC / Barcode
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.


The OEM 4326781RX Fuel Injector is built for Cummins QSK45 and QSK60 engines produced between 2001 and 2015, providing precise fuel delivery essential for efficient engine cycles. Designed to meet strict factory specifications, this injector ensures consistent spray patterns and timing across high-output diesel systems. Its robust construction makes it suitable for demanding applications such as mining, marine, and power generation. Installation is straightforward, thanks to its direct-fit design and compatibility with OEM systems. This component supports long-term reliability in environments where steady engine operation is critical.

FITMENT CHART

YEAR MAKE ENGINE(S)
2001 Cummins QSK45 QSK60
2002 Cummins QSK45 QSK60
2003 Cummins QSK45 QSK60
2004 Cummins QSK45 QSK60
2005 Cummins QSK45 QSK60
2006 Cummins QSK45 QSK60
2007 Cummins QSK45 QSK60
2008 Cummins QSK45 QSK60
2009 Cummins QSK45 QSK60
2010 Cummins QSK45 QSK60
2011 Cummins QSK45 QSK60
2012 Cummins QSK45 QSK60
2013 Cummins QSK45 QSK60
2014 Cummins QSK45 QSK60
2015 Cummins QSK45 QSK60

PEOPLE ALSO ASKS | BLOG(S)

The Cummins QSK45 and QSK60 Fuel Injector (OEM 4326781RX) plays a critical role in the fuel system of heavy-duty engines, ensuring proper fuel delivery for combustion. These engines are widely used in industrial applications like mining, marine, and power generation, making reliable fuel injectors essential for optimal engine operation.

Key functions of the Cummins Fuel Injector include:

  • Fuel Atomization
    • Breaking down fuel into fine droplets for efficient combustion in the cylinder.
  • Precise Injection Timing
    • Ensures the right amount of fuel is delivered at the right time to maximize engine efficiency.
  • Fuel Pressure Regulation
    • Maintains the correct fuel pressure to ensure consistent injection and engine reliability.
  • Fuel Delivery Control
    • Controls the amount of fuel injected into the combustion chamber for optimal power output.

A malfunctioning fuel injector can lead to poor engine working condition, increased fuel consumption, and potentially expensive repairs. By choosing a high-quality fuel injector like the Cummins OEM 4326781RX, you ensure your engine operates smoothly and efficiently. This component is essential for the longevity of your Cummins QSK45 or QSK60 engine, particularly in demanding work environments.

A failing fuel injector can cause serious issues in your vehicle, affecting its efficiency and functionality. Recognizing the symptoms early can save you from costly repairs down the road.

One of the first signs of a bad fuel injector is rough idling. Your engine may stutter or vibrate when running at lower speeds. This happens because the fuel isn’t properly distributed to the engine.

Another symptom is reduced fuel efficiency. When the injector isn’t working as it should, your engine will burn more fuel to compensate, leading to more frequent trips to the gas station.

Common symptoms of a failing fuel injector include:

  • Rough idling or engine stalling
  • Increased fuel consumption
  • Misfiring or hesitation during acceleration
  • Black smoke from the exhaust
  • Fuel smell in or around the vehicle

If you experience any of these issues, it's important to get the fuel injector checked. Ignoring the problem could lead to further engine complications, which could be more expensive to fix.

Regular maintenance and timely repairs of your fuel injectors can ensure the longevity of your engine. If you suspect a problem, consider replacing the faulty injector to avoid more serious engine issues in the future.

No programming is required, but each injector must be installed in the correct cylinder with proper torque and sealing.

A 2-5 micron fuel filter is recommended to protect these precision injectors from wear and plugging.

Yes, performance can be evaluated with diagnostic software and cylinder cutout tests to identify misfires or over-fueling.

With proper fuel and maintenance, these injectors generally last 15,000 to 20,000 engine hours.

Cummins Fuel Injectors