
Paccar MX13 Fuel Injector 2024-2026: OEM 2461236PEX ( Set of 6 )
PACCAR MX13 FUEL INJECTOR 2024-2026: OEM 2461236PEX ( SET OF 6 )

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY
1M MILES OR 1 YEAR
PRODUCT DESCRIPTION
This is a Genuine New, Paccar Fuel Injector, Paccar part number 2461236PEX-SET ( OEM Part Number 2461236PEX ).This part is primarily made for a Paccar MX13, production years 2024-2026, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here
OEM NUMBERS
| Primary OEM | 2461236PEX |
| Additional OEM | 2461236PEX |
ADDITIONAL DETAILS
| CONDITION | Genuine New |
| UPC / Barcode | 00840490535350 |
| 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.
Built as a complete set of six for Paccar MX13 engines produced between 2024 and 2026, OEM 2461236PEX fuel injectors are engineered to deliver controlled fuel delivery to each cylinder. Each injector in the set is manufactured to OEM specifications to ensure accurate fitment and compatibility with factory high-pressure fuel system assemblies. Constructed from durable materials, they are suited for the demanding operating conditions common in modern heavy-duty diesel applications. The injectors support uniform fuel atomization to help maintain proper combustion characteristics and stable engine operation. This complete set is a dependable option for fleet service and targeted repair needs requiring reliable fuel system performance.
FITMENT CHART
| YEAR | MAKE | ENGINE(S) | ||||
|---|---|---|---|---|---|---|
| 2024 | Paccar | MX13 | ||||
| 2025 | Paccar | MX13 | ||||
| 2026 | Paccar | MX13 | ||||
PEOPLE ALSO ASKS | BLOG(S)
The Paccar MX13 Fuel Injector 2024–2026: OEM 2461236PEX (Set of 6) is important because it directly controls how fuel is delivered and burned inside the engine. In a six-cylinder MX13 engine, each cylinder depends on its own injector to deliver the correct amount of fuel at the exact right time. When all six injectors operate evenly, the engine can maintain smooth and balanced combustion.
These injectors are part of a high-pressure common rail fuel system. The engine control module monitors operating conditions such as speed, load, and temperature, then commands each injector to open and close with precision. This accurate fuel metering ensures proper atomization, which supports clean combustion and stable engine operation.
Replacing injectors as a complete set helps maintain consistent fuel delivery across all cylinders. Uneven injector performance can lead to rough idle, inconsistent combustion, or increased fuel consumption.
Why the OEM 2461236PEX set of 6 is important:
- Ensures balanced fuel delivery to all cylinders
- Supports smooth engine operation and consistent idle
- Helps maintain fuel efficiency and emissions control
- Reduces the risk of cylinder imbalance and drivability issues
For fleets and owner-operators, maintaining a properly functioning injector set is essential for reliability, predictable performance, and long-term engine durability in 2024–2026 Paccar MX13 applications.
A bad fuel injector can cause noticeable engine performance issues, increased emissions, and long-term mechanical damage if not corrected quickly. Because fuel injectors control precise fuel delivery and atomization, even one failing injector can disrupt combustion and affect the entire engine system.
One of the earliest signs is rough idle or intermittent misfires. The engine may hesitate during acceleration, struggle under load, or experience hard starting conditions. Poor fuel atomization can also lead to incomplete combustion, resulting in reduced fuel efficiency and excessive exhaust smoke.
Midway through diagnosis, the most common signs of a bad fuel injector include:
- Rough idle or cylinder-specific misfires
- Hard starting or extended crank time
- Loss of power or sluggish acceleration
- Increased fuel consumption
- Excessive black, white, or gray exhaust smoke
- Strong fuel odor from the exhaust
- Rising DPF soot levels or frequent regeneration cycles
In more advanced cases, a leaking injector can cause cylinder washdown, leading to fuel dilution in the engine oil and accelerated wear of internal components. Over-fueling can also increase exhaust temperatures and stress the turbocharger and aftertreatment system.
Prompt diagnostic testing, including balance rate checks and fuel pressure monitoring, is essential when these symptoms appear. Early repair helps restore performance, protect emissions components, and prevent costly engine damage.
Heavy-duty trucks and commercial vehicles equipped with MX13 engines from 2024–2026 use this injector set.
Yes, proper high-pressure fuel tools and correct torque settings are required for proper sealing and connection.
Yes, professional installation is recommended to ensure correct sealing, connection, and fuel system calibration.
It is a complete set of six OEM fuel injectors designed for Paccar MX13 diesel engines from 2024 through 2026.











































































































































































































