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Paccar MX11 Turbo Assembly 2018-2022: OEM 6456461PEX

PACCAR MX11 TURBO ASSEMBLY 2018-2022: OEM 6456461PEX

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$4,495.00

CORE CHARGE:

$1,200.00
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 NUMBER6456461PEX
PART TYPETurbo Assembly
BRANDTamerx Diesel Products
ENGINE MAKEPaccar
ENGINE TYPEMX11
YEAR2018-2022
PART NUMBERHE400-40

PRODUCT DESCRIPTION

This is a Remanufactured Tamerx Turbo Assembly, Tamerx part number HE400-40 ( OEM Part Number 6456461PEX ). 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 Paccar MX11, production years 2018-2022, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

OEM NUMBERS

Primary OEM6456461PEX
Additional OEM2128150, 2128151, 2128151PE, 2128151PEX, 2308628, 2308628PE, 2308628PEX, 2308629, 2348166, 2348166PE, 2348166PEX, 2348167, 2348177, 2348177PE, 2348177PEX, 5459128, 5459132, 5459133, 5548352, 5642877, 5642879, 5642882, 5642883, 5642886, 5642886PE, 5642886PEX, 6456175, 6456238, 6456238PE, 6456238PEX, 6456407, 6456461, 6456461PE, 6456461PEX, 6456462, 701610AT

ADDITIONAL DETAILS

CONDITIONRemanufactured
UPC / Barcode00840490547988
WEIGHT55.00 LBS

SHIPPING OPTIONS

Ship Weight : 55.00 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 effortless power with the Paccar MX11 Turbo Assembly 2018–2022 – OEM 6456461PEX, engineered to boost airflow and elevate performance on every drive. This turbo assembly helps deliver stronger response, improved efficiency, and smoother acceleration across your MX11 engine’s operating range. Built to meet strict OEM standards, it ensures a reliable fit and long-lasting durability for the long haul. Upgrade your rig with a turbo that keeps you moving confidently mile after mile.

FITMENT CHART

YEARMAKEENGINE(S)
2018Paccar MX11
2019Paccar MX11
2020Paccar MX11
2021Paccar MX11
2022Paccar MX11

PEOPLE ALSO ASKS | BLOG(S)

A turbo assembly plays a crucial role in how a diesel engine performs by increasing the amount of air that enters the engine, which helps improve combustion and deliver dependable power. The Paccar MX11 Turbo Assembly (2018–2022, OEM 6456461PEX) is engineered to provide the precise boost pressure and airflow needed for reliable operation across a variety of driving conditions. Choosing a high-quality, OEM-spec turbo assembly ensures smoother performance, improved fuel efficiency, and consistent engine responsiveness over the life of your vehicle.

This turbo assembly makes a significant impact on engine behavior — here’s why it matters:

  • Optimizes Boost Pressure – Compresses incoming air to increase oxygen supply for more effective combustion and stronger power delivery.

  • Improves Engine Responsiveness – Accurate airflow support helps reduce lag and maintain steady throttle response under load or acceleration.

  • Supports Better Fuel Efficiency – Proper boost helps the engine burn fuel more completely, contributing to improved fuel economy and cleaner operation.

  • OEM-Grade Fit and Durability – As OEM 6456461PEX, this turbo assembly meets original manufacturer specifications for fitment, airflow performance, and long-lasting reliability.

  • Protects Internal Engine Components – Maintaining the correct air-to-fuel ratio helps reduce stress on pistons, valves, and other parts, promoting smoother operation and extended engine life.

A worn or failing turbo assembly can lead to reduced power, increased exhaust smoke, and less efficient fuel use. The Paccar MX11 Turbo Assembly (OEM 6456461PEX) delivers the dependable performance and OEM-standard quality your engine depends on — helping keep your diesel running strong, smooth, and efficient. For customers seeking a reliable replacement part, Tamerx offers high-quality turbo assemblies designed to support consistent performance and long-term engine health.

 

A turbo assembly plays a major role in managing airflow and supporting efficient engine operation. When the turbo becomes damaged, it can disrupt the balance between air and fuel, leading to noticeable changes in how the engine performs. Even minor turbo issues can quickly impact drivability and overall engine health.

  • Reduced power output: A damaged turbo may not build or maintain proper boost pressure.

  • Sluggish acceleration: Delayed or inconsistent boost can cause hesitation during acceleration.

  • Poor fuel efficiency: Improper airflow can force the engine to burn more fuel to compensate.

  • Excessive exhaust smoke: Oil leaks or airflow issues can lead to visible smoke from the exhaust.

  • Unusual noises: Whining, grinding, or rattling sounds often indicate internal turbo damage.

  • Check engine light activation: Boost or airflow-related fault codes may appear as performance declines.

A damaged turbo assembly can significantly affect engine performance if left unaddressed. Prompt inspection and repair help restore proper airflow, protect other engine components, and maintain reliable vehicle operation.

Common symptoms include unusual exhaust smoke, loss of power, or a whining noise from the turbo area. These issues may indicate reduced airflow or internal wear.

Installation follows typical turbo replacement procedures, with mounting to the exhaust manifold and connection of oil and coolant lines. Professional installation ensures correct torque and alignment, preventing leaks or performance issues.

Regular oil and filter changes, clean air filters, and ensuring no debris enters the intake system all help protect the turbo. Good maintenance practices reduce wear on internal bearings and turbine components.

High-quality engine oil helps lubricate internal turbo parts and reduce heat stress on bearings and the shaft. Poor oil quality or infrequent changes can accelerate wear and shorten turbo life.

Paccar Turbo Assemblys

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