
Cummins QSK45, QSK60 Fuel Injector 2001-2015: OEM 4326781RX ( Set of 6 )
CUMMINS QSK45, QSK60 FUEL INJECTOR 2001-2015: OEM 4326781RX ( SET OF 6 )

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY
WARRANTY
1M MILES OR 1 YEAR
PRODUCT DESCRIPTION
This is a Remanufactured Tamerx Fuel Injector, Tamerx part number 4326781RM-SET ( 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 | 72.00 LBS |
SHIPPING OPTIONS
Ship Weight : 72.00 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.
Unleash the full power of your heavy-duty Cummins engine with the QSK45, QSK60 Fuel Injector Set (2001–2015): OEM 4326781RX. This set of six genuine OEM injectors is built to deliver precise fuel flow, improved combustion, and maximum performance under extreme conditions. Engineered for durability and exact fit, these injectors restore efficiency and reliability to keep your engine running strong in the toughest environments.
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 engines rely on robust fuel injectors to deliver precise amounts of fuel into the engine cylinders. These injectors, like the OEM 4326781RX set, are essential to ensuring the efficient operation of your engine. Understanding the components that make up this fuel injector can help you better maintain your engine and avoid costly repairs.
Key components of the Cummins QSK45, QSK60 Fuel Injector include:
- Injector Body
- Houses the internal parts and ensures proper fuel flow.
- Nozzle
- Responsible for spraying fuel into the combustion chamber at the correct angle and pressure.
- Control Valve
- Regulates the amount and timing of fuel entering the engine.
- Plunger and Barrel
- Work together to pressurize the fuel before it's delivered through the nozzle.
- O-Rings
- Provide necessary seals to prevent fuel leaks and maintain pressure.
These parts work in unison to ensure proper fuel injection and engine efficiency. Regular inspection and timely replacement of injectors can help avoid major engine issues. If you're in need of high-quality injectors for your Cummins QSK45 or QSK60 engines, the OEM 4326781RX set is an excellent option.
Fuel injectors play a critical role in your engine, delivering fuel into the combustion chamber for efficient operation. However, over time, injectors can fail due to several factors, which can lead to costly repairs if not addressed promptly.
Here are some of the most common causes of fuel injector failure:
- Contaminated Fuel
- Dirty fuel can introduce particles and debris into the injector, clogging it and affecting fuel flow.
- Excessive Heat
- Prolonged exposure to high temperatures can cause wear on injector seals and components.
- Electrical Issues
- Faulty wiring or connections can prevent the injectors from receiving the proper signals, leading to malfunction.
- Wear and Tear
- Like most engine components, fuel injectors experience wear over time, which can lead to failure.
Regular maintenance, including fuel filter replacement, can help prevent fuel injector issues. If you notice symptoms like rough idling, hard starting, or reduced fuel efficiency, it may be time to inspect and replace your injectors.
By addressing these common causes early, you can avoid more extensive engine damage and ensure your vehicle continues to run smoothly.
Injectors must be matched and calibrated to the ECM for consistent injection timing and volume.
It uses high-pressure nozzles to break fuel into fine droplets for efficient combustion in the chamber.
Internal leaks can cause fuel dilution in the engine oil, leading to lubrication failure and component wear.
Flow testing, cylinder contribution analysis, and ECM error codes can help identify faulty injectors.