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Paccar MX13 Fuel Injector 2022-2024: OEM 2403776PEX

PACCAR MX13 FUEL INJECTOR 2022-2024: OEM 2403776PEX

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$595.00

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 NUMBER2403776PEX
PART TYPEFuel Injector
BRANDPaccar
ENGINE MAKEPaccar
ENGINE TYPEMX13
YEAR2022-2024
PART NUMBER2403776PEX
APPLICATION NOTESEPA21

PRODUCT DESCRIPTION

This is a Genuine New, Paccar Fuel Injector, Paccar part number 2403776PEX ( 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
WEIGHT15.00 LBS

SHIPPING OPTIONS

Ship Weight : 15.00 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.


Achieve precise performance and efficient fuel delivery with the Paccar MX13 Fuel Injector (2022–2024): OEM 2403776PEX. This genuine OEM injector is designed to optimize combustion, reduce emissions, and deliver smooth, reliable power for your MX13 engine. Built to withstand the rigors of heavy-duty use, it’s the ideal replacement to keep your vehicle running at peak efficiency and ready for the road ahead.

FITMENT CHART

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

PEOPLE ALSO ASKS | BLOG(S)

A properly functioning fuel injector is key to maintaining clean and efficient combustion in modern diesel engines. The Paccar MX13 Fuel Injector, OEM 2403776PEX, is designed to deliver precise amounts of fuel into the combustion chamber, ensuring optimal engine operation from 2022 to 2024 models. Knowing how this part functions can help with maintenance planning and reliability.

Key Functions of the Paccar MX13 Fuel Injector (OEM 2403776PEX):

  • Atomizes Fuel for Combustion – Delivers fuel in a fine mist for better burn efficiency

  • Controls Injection Timing – Sends fuel at the correct interval for smooth engine cycles

  • Regulates Fuel Volume – Adjusts flow based on engine demand and load

  • Reduces Exhaust Emissions – Helps meet emissions targets through controlled injection

  • Supports Cold Starts – Injects extra fuel during engine start-up in colder conditions

Why Choose OEM 2403776PEX from TamerX:

  • Built to meet original equipment specs for the MX13

  • Reliable operation over long service intervals

  • Ensures consistent combustion and engine balance

  • Backed by TamerX quality and warranty support


The Paccar MX13 Fuel Injector with OEM 2403776PEX is vital to your engine’s daily operation. From fuel delivery to emissions control, it plays a major part in how your engine runs. When it’s time for a replacement, trust TamerX Diesel Parts to supply the right injector built for durability and accuracy.

Fuel injectors are essential for delivering the right amount of fuel to your engine’s combustion chamber. When they’re clean and functioning properly, they help maintain power, fuel efficiency, and smooth engine performance. Taking steps to care for your injectors can extend their life and prevent costly repairs down the line.

Best Practices for Fuel Injector Maintenance:

  • Use High-Quality Fuel – Premium fuel contains detergents that help keep injectors clean and reduce buildup.

  • Add Fuel Injector Cleaner – Periodically use a fuel injector cleaning additive to flush out deposits and improve spray pattern.

  • Replace Fuel Filters Regularly – Clean filters prevent dirt, rust, and debris from entering the fuel system and damaging injectors.

  • Avoid Running on Low Fuel – Low fuel levels can stir up sediment in the tank, increasing the chance of clogging injectors.

  • Stick to Scheduled Maintenance – Follow your vehicle’s service intervals for fuel system inspections and tune-ups.

  • Address Engine Issues Promptly – Misfires, rough idling, or warning lights may be early signs of injector trouble—don’t ignore them.

  • Drive Long Enough to Burn Off Deposits – Occasional longer drives help the engine reach operating temperature, aiding in combustion and reducing residue buildup.

Maintaining your fuel injectors doesn’t require much effort, but it makes a big difference in your engine’s performance and efficiency. With clean fuel, regular filter changes, and timely use of injector cleaners, you can help ensure your injectors stay in good condition for many miles to come.

Symptoms include raw fuel odor, white smoke on startup, or erratic RPM behavior.

Inspection is advised during scheduled engine diagnostics or when drivability issues arise.

Yes, improper torque or sealing can result in fuel leaks, poor fitment, or injector failure.

Professional ultrasonic cleaning or fuel system additives are the safest ways to remove deposits.

Paccar Fuel Injectors