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Paccar MX13 Fuel Injector 2022-2024: OEM 2403776PEX ( Set of 6 )

PACCAR MX13 FUEL INJECTOR 2022-2024: OEM 2403776PEX ( 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:

$9,000.00
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 NUMBER2403776PEX
PART TYPEFuel Injector
BRANDPaccar
ENGINE MAKEPaccar
ENGINE TYPEMX13
YEAR2022-2024
PART NUMBER2403776PEX-SET
APPLICATION NOTESEPA21

PRODUCT DESCRIPTION

This is a Genuine New, Paccar Fuel Injector, Paccar part number 2403776PEX-SET ( OEM Part Number 2403776PEX ).This part is primarily made for a Paccar MX13, production years 2022-2024, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

OEM NUMBERS

Primary OEM2403776PEX
Additional OEM2394548PEX, 2403776PEX, 2461236PEX

ADDITIONAL DETAILS

CONDITIONGenuine New
UPC / Barcode
WEIGHT90.00 LBS

SHIPPING OPTIONS

Ship Weight : 90.00 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.


Keep your engine running clean, smooth, and efficient with the Paccar MX13 Fuel Injector Set (2022–2024): OEM 2403776PEX (Set of 6). These genuine OEM injectors are built for precise fuel delivery, optimal combustion, and dependable power under tough working conditions. Perfectly matched to your MX13 engine, this set offers the durability and performance you need to stay on the road and on schedule.

FITMENT CHART

YEARMAKEENGINE(S)
2022Paccar MX13
2023Paccar MX13
2024Paccar MX13

PEOPLE ALSO ASKS | BLOG(S)

Consistent fuel delivery across all cylinders is essential for efficient diesel engine operation. The Paccar MX13 Fuel Injector Set (OEM 2403776PEX) for 2022–2024 engines is engineered to ensure uniform fuel flow, helping reduce misfires and maintain proper combustion. Using a matched set of six injectors ensures balance and synchronization in the fuel system, which is crucial for long-term reliability.

OEM 2403776PEX Set of 6 at TamerX Offers:

  • Factory-grade components tailored for the Paccar MX13

  • Long-lasting build for dependable use

  • Backed by quality assurance and customer support


Installing the Paccar MX13 Fuel Injector Set (OEM 2403776PEX) ensures reliable fuel delivery and smooth engine function across all cylinders. Whether replacing worn injectors or performing preventive maintenance, choosing a matched set from TamerX helps keep your diesel engine running evenly and efficiently.

Fuel injectors are a key part of your engine’s fuel system, responsible for delivering the precise amount of fuel needed for combustion. While they are built to last, their performance can degrade over time due to wear and fuel contamination. Knowing the average lifespan of a fuel injector can help you plan for maintenance and avoid unexpected engine issues.

Typical Fuel Injector Lifespan and Key Influencing Factors:

  • Average Lifespan – Most fuel injectors are designed to last between 80,000 and 100,000 miles, though some can exceed this with proper care.

  • Fuel Quality – Using clean, high-grade fuel helps reduce buildup and extends the life of injectors.

  • Maintenance Practices – Regularly changing fuel filters and using injector cleaning additives can help prevent clogs and keep injectors functioning properly.

  • Driving Conditions – City driving with frequent stops and short trips may shorten injector life compared to steady highway driving.

  • Engine Type and Usage – Turbocharged or high-performance engines may place more strain on injectors, reducing their service life.

  • Fuel Contamination – Water, dirt, or debris in the fuel can cause clogging and premature wear.

Fuel injectors are long-lasting components, but their lifespan depends on how well your fuel system is maintained. By using quality fuel, following recommended maintenance schedules, and addressing issues early, you can help ensure your injectors last as long as possible while keeping your engine running at its best.

A malfunctioning injector may disrupt fuel consistency, leading to unstable idling or surging.

Hesitation, poor acceleration, or rough cold starts may indicate contamination within the injector.

Carbon or varnish deposits around the nozzle tip can impede spray quality and degrade fuel atomization.

Yes, each injector in this set is factory-calibrated to deliver a consistent high-pressure diesel flow tailored to MX13 engine requirements.

Paccar Fuel Injectors