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Mack MP7, MP8, MP10 DPF 2008-2010: OEM 21850658

MACK MP7, MP8, MP10 DPF 2008-2010: OEM 21850658

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$1,895.00

CORE CHARGE:

$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 NUMBER 21850658
PART TYPE DPF
BRAND
ENGINE MAKE Mack
ENGINE TYPE MP7, MP8, MP10
YEAR 2008-2010
PART NUMBER 114-0004-1

PRODUCT DESCRIPTION

This is a New, DPF, part number 114-0004-1 ( OEM Part Number 21850658 ).This part is primarily made for a Mack MP7, MP8, MP10, production years 2008-2010, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

OEM NUMBERS

Primary OEM21850658
Additional OEM621938, 20864127, 21850658, 85000726, 2060650013, 701799AT, A041T202, Q621328

ADDITIONAL DETAILS

CONDITIONNew
UPC / Barcode00840490539259
WEIGHT44.00 LBS

SHIPPING OPTIONS

Ship Weight : 44.00 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.


Trust the Mack MP7/MP8/MP10 Diesel Particulate Filter (2008–2010) — OEM 21850658 to deliver dependable soot removal and consistent engine performance. Designed to effectively capture harmful particulates and support cleaner combustion, this rugged DPF helps ensure steady airflow and reliable operation throughout demanding routes. Built to exact OEM specifications for a seamless drop-in fit, it stands as a reliable part for emission compliance and long-term engine endurance — mile after mile.

FITMENT CHART

YEARMAKEENGINE(S)
2008Mack MP7 MP8 MP10
2009Mack MP7 MP8 MP10
2010Mack MP7 MP8 MP10

PEOPLE ALSO ASKS | BLOG(S)

Maintaining healthy exhaust flow isn't just about meeting environmental rules—it's essential for your engine’s smooth operation and durability. The OEM 21850658 Diesel Particulate Filter (DPF) specifically fits Mack MP7, MP8, and MP10 models from 2008–2010. It's engineered to trap soot effectively while preserving exhaust dynamics, ensuring efficient aftertreatment system function and longer component life.

  • Restores Exhaust Airflow and Reduces Backpressure
    This OEM DPF captures particulate matter without constricting exhaust flow, helping your engine maintain its designed breathing capacity and reducing undue stress on components.

  • Promotes Predictable Regeneration Cycles
    With consistent temperature and flow characteristics, passive regeneration occurs smoothly—minimizing forced cycles and avoiding performance interruptions.

  • Safeguards Downstream System Health
    By filtering early, it prevents harmful soot from reaching SCR units, sensors, and catalytic converters, protecting these sensitive parts from premature wear.

  • Precision Fit for Hassle-Free Replacement
    Tailored for Mack MP7/MP8/MP10 engines, this DPF installs cleanly without modifications—simplifying replacement and keeping downtime to a minimum.

  • Dependable Coverage for Peace of Mind
    With a one-year or one-million-mile warranty, this OEM DPF ensures both durable performance and service confidence.

Choosing the OEM 21850658 DPF isn't just a part swap—it’s a strategic step toward preserving exhaust system balance, protecting critical components, and maximizing your engine’s longevity. Trust Tamerx Diesel Parts for genuine-quality components designed for reliability and smooth operation, mile after mile.

The Diesel Particulate Filter (DPF) is a key emissions component in modern diesel engines. It traps and stores soot to reduce pollutants released into the atmosphere. While DPFs are designed to last a long time with regular cleaning and proper regeneration, they don’t last forever. Knowing when a DPF needs to be replaced can help avoid engine damage and costly repairs.

Signs Your DPF May Need Replacement

  • Persistent Warning Lights
    If the DPF or check engine light stays on even after regeneration attempts or sensor resets, it could be a sign that the filter is beyond cleaning and requires replacement.

  • Failed Regeneration Cycles
    The inability of the DPF to complete passive or active regeneration cycles—despite attempts—often points to excessive soot or ash buildup that can’t be cleared.

  • Significant Loss of Power
    A severely clogged DPF restricts exhaust flow, which leads to poor throttle response, sluggish acceleration, and an overall drop in engine performance.

  • Frequent and Unresolved Fault Codes
    Recurring diagnostic trouble codes (DTCs) related to the aftertreatment system—especially those related to high backpressure or failed regenerations—may indicate a failing DPF.

  • Excessive Fuel Consumption
    Engines may burn more fuel to try to generate the heat needed for regeneration or to overcome backpressure, leading to noticeable drops in fuel economy.

  • Visible Damage or Cracks
    If the DPF housing or internal structure is damaged due to overheating or impact, the entire unit typically must be replaced instead of repaired.


Recognizing the warning signs of a failing DPF is crucial to keeping your diesel engine running efficiently and within emissions standards. Regular monitoring, routine cleanings, and prompt responses to warning indicators can extend its life. However, if performance continues to suffer or warning signs persist, it may be time to replace the DPF to prevent further damage and maintain regulatory compliance.

A clogged filter can lead to engine overheating, reduced efficiency, and premature engine wear.

Frequent short trips, low-temperature driving, or contamination from oil or coolant can degrade performance quickly.

Soot deposits or discoloration near connections or housing often signal that the filter needs servicing.

Allow the unit to cool fully and relieve pressure to avoid burns and prevent soot release during handling.

Mack DPFs

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