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Cummins QSB 6.7L, 4.5L Fuel Injector 2007-2015: OEM 5263262RX ( Set of 6 )

CUMMINS QSB 6.7L, 4.5L FUEL INJECTOR 2007-2015: OEM 5263262RX ( SET OF 6 )

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$2,706.00

CORE CHARGE:

$900.00
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 NUMBER5263262RX
PART TYPEFuel Injector
BRANDCummins
ENGINE MAKECummins
ENGINE TYPEQSB 6.7L, 4.5L
YEAR2007-2015
PART NUMBER5263262-SET

PRODUCT DESCRIPTION

This is a Genuine New Cummins Fuel Injector, Cummins part number 5263262-SET ( OEM Part Number 5263262RX ). 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 QSB 6.7L, 4.5L, production years 2007-2015, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

OEM NUMBERS

Primary OEM5263262RX
Additional OEM3976372, 0445120059, 0445120231, 0986435597, 5263262RX, 6754-11-3011, 6754-11-3102

ADDITIONAL DETAILS

CONDITIONGenuine New
UPC / Barcode
WEIGHT9.00 LBS

SHIPPING OPTIONS

Ship Weight : 9.00 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.


Deliver reliable performance and fuel efficiency to your 2007–2015 Cummins QSB 6.7L or 4.5L engine with this OEM 5263262RX Fuel Injector Set of 6. These injectors ensure precise fuel delivery and clean combustion, supporting smooth engine operation and consistent power under demanding conditions. A solid choice for maintenance or replacement, this set is built to keep your diesel engine running strong and efficient in the field or on the job.

FITMENT CHART

YEARMAKEENGINE(S)
2007Cummins QSB 6.7L 4.5L
2008Cummins QSB 6.7L 4.5L
2009Cummins QSB 6.7L 4.5L
2010Cummins QSB 6.7L 4.5L
2011Cummins QSB 6.7L 4.5L
2012Cummins QSB 6.7L 4.5L
2013Cummins QSB 6.7L 4.5L
2014Cummins QSB 6.7L 4.5L
2015Cummins QSB 6.7L 4.5L

PEOPLE ALSO ASKS | BLOG(S)

The Cummins QSB series engines, particularly the 6.7L and 4.5L models, rely on efficient fuel injectors to ensure that the right amount of fuel is delivered at the correct time. The Cummins QSB Fuel Injector (OEM 5263262RX, Set of 6) is an essential component in this process, ensuring optimal fuel atomization for smooth engine operation. Proper maintenance and timely replacement of these injectors can help extend engine life, reduce fuel costs, and prevent performance issues.

Key Functions of the Cummins QSB 6.7L, 4.5L Fuel Injector

  • Precise Fuel Delivery
    • Delivers the exact amount of fuel required for efficient combustion, helping the engine run smoothly and effectively.
  • Boosts Fuel Efficiency
    • Proper fuel atomization improves combustion, leading to better fuel economy and reduced fuel consumption.
  • Supports Clean Emissions
    •  Ensures better combustion, resulting in fewer emissions and maintaining compliance with environmental regulations.
  • Prevents Engine Misfires
    •  A properly functioning injector helps avoid engine issues such as misfires, rough idling, and poor throttle response.

Maintenance Tips for the Fuel Injector

  • Regular Inspection
    •  Routinely check the injectors for any signs of wear, leakage, or damage that may affect performance.
  • Clean the Fuel System
    • Keep the fuel system clean to prevent debris and contaminants from clogging the injectors and impacting fuel flow.
  • Monitor Engine Performance
    •  If you notice any signs of rough idling, decreased fuel efficiency, or engine hesitation, it may be time to inspect the fuel injectors.
  • Replace When Necessary
    •  If injectors are damaged or not performing optimally, replacing them with the OEM 5263262RX ensures that the engine returns to full efficiency.

The Cummins QSB 6.7L, 4.5L Fuel Injector (OEM 5263262RX) is vital for maintaining engine performance, fuel efficiency, and emission standards. Regular maintenance and timely replacement of injectors will keep your engine running smoothly and efficiently. TamerX Diesel Parts offers high-quality injectors and other essential components to keep your Cummins engine operating at peak performance.

Fuel injectors are essential for delivering the correct amount of fuel to your engine for optimal combustion. When they go bad, they can cause several engine performance problems. Recognizing the symptoms of a failing fuel injector early can help prevent more serious damage to your engine.

  • Engine Misfires

    • One of the most noticeable signs of a faulty fuel injector is engine misfires. This occurs when the injector isn’t delivering enough fuel, leading to incomplete combustion and causing the engine to sputter.

  • Poor Fuel Efficiency

    • A bad injector can disrupt the air-fuel ratio, making the engine burn more fuel than necessary. This results in reduced fuel efficiency and increased fuel costs.

  • Rough Idling

    • If the engine idles roughly or inconsistently, it could be due to a clogged or malfunctioning fuel injector. This is caused by uneven fuel distribution in the combustion chamber.

  • Check Engine Light

    •  A malfunctioning fuel injector can trigger the check engine light. Modern vehicles have sensors that detect imbalances in fuel delivery, alerting you to a potential injector problem.

  • Increased Exhaust Emissions

    • When a fuel injector fails, unburnt fuel can escape through the exhaust system, resulting in increased emissions. This can lead to failing emissions tests.

  • Fuel Odor

    • If you smell fuel around the vehicle, it could indicate that a fuel injector is leaking. Fuel leaks are a serious safety hazard and should be addressed immediately.

A bad fuel injector can cause engine misfires, poor fuel efficiency, rough idling, and increased emissions. If you notice any of these symptoms, it’s crucial to have your fuel injectors inspected and replaced if necessary. Addressing these issues early can prevent more significant engine problems and keep your vehicle running smoothly. Regular maintenance and early detection are key to prolonging the life of your fuel injectors and maintaining optimal engine performance.

It accurately dispenses fuel into the combustion chamber to support optimal power and efficiency.

Routine use of clean fuel and scheduled fuel system servicing extends injector health.

Prolonged use of a failing injector may lead to piston scoring or overheating.

Inspection every 75,000–100,000 miles or during major service is generally recommended.

Cummins Fuel Injectors