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Cummins QSB 6.7L DOC Filter 2011-2023: OEM 11K7-31010

CUMMINS QSB 6.7L DOC FILTER 2011-2023: OEM 11K7-31010

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$6,650.00

CORE CHARGE:

$1,000.00
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 NUMBER11K7-31010
PART TYPEDOC Filter
BRANDTamerx Diesel Products
ENGINE MAKECummins
ENGINE TYPEQSB 6.7L
YEAR2011-2023
PART NUMBERX11K7-31010RM-DOC
APPLICATION NOTESHyundai HX260L, HX300L
ADDITIONAL NOTESInlet Catalyst

PRODUCT DESCRIPTION

This is a Remanufactured Tamerx DOC Filter, Tamerx part number X11K7-31010RM-DOC ( OEM Part Number 11K7-31010 ). 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 Cummins QSB 6.7L, production years 2011-2023, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

Additional Notes: Inlet Catalyst

OEM NUMBERS

Primary OEM11K7-31010
Additional OEM11K7-31010

ADDITIONAL DETAILS

CONDITIONRemanufactured
UPC / Barcode00840490553606
WEIGHT85.00 LBS

SHIPPING OPTIONS

Ship Weight : 85.00 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.


Designed for 2011–2023 Cummins QSB 6.7L engines, the Cummins QSB 6.7L DOC Filter (OEM 11K7-31010) is a key component of the diesel exhaust aftertreatment system. This Diesel Oxidation Catalyst (DOC) filter helps reduce hydrocarbons and carbon monoxide in the exhaust stream before gases exit the vehicle. Manufactured to meet original equipment specifications, it is engineered for proper fitment and dependable integration with existing emissions components. The durable construction is built to withstand high temperatures and demanding operating conditions commonly found in diesel applications. Replacing a worn or restricted DOC filter with the OEM 11K7-31010 helps maintain proper exhaust system function and supports compliance with emissions regulations.

FITMENT CHART

YEARMAKEENGINE(S)
2011Cummins QSB 6.7L
2012Cummins QSB 6.7L
2013Cummins QSB 6.7L
2014Cummins QSB 6.7L
2015Cummins QSB 6.7L
2016Cummins QSB 6.7L
2017Cummins QSB 6.7L
2018Cummins QSB 6.7L
2019Cummins QSB 6.7L
2020Cummins QSB 6.7L
2021Cummins QSB 6.7L
2022Cummins QSB 6.7L
2023Cummins QSB 6.7L

PEOPLE ALSO ASKS | BLOG(S)

The Cummins QSB 6.7L DOC Filter (Diesel Oxidation Catalyst), OEM 11K7-31010, plays a key role in the emissions system by treating exhaust gases as they leave the engine. Since it operates under high heat and constant exhaust flow, proper care is essential to keep it functioning effectively over time.

A well-maintained DOC filter helps ensure consistent exhaust treatment and supports the overall health of the aftertreatment system.

Tips for Maintaining Your Cummins QSB 6.7L DOC Filter

  • Keep the engine properly serviced
    • Regular maintenance helps reduce excess soot and contaminants entering the exhaust system.
  • Inspect the exhaust system routinely
    • Check for leaks, cracks, or loose connections that may affect exhaust flow through the DOC.
  • Monitor system warning lights
    • Address any emissions-related fault codes early to prevent buildup or system imbalance.
  • Maintain the DPF and SCR systems
    • Proper operation of downstream components helps maintain stable conditions for the DOC.
  • Use clean fuel and maintain fuel components
    • Cleaner combustion results in fewer deposits reaching the DOC filter.

Taking care of the Cummins QSB 6.7L DOC Filter OEM 11K7-31010 helps maintain reliable emissions control and supports the function of the entire exhaust system. Routine inspections and timely maintenance can help extend the service life of this important component while ensuring consistent operation.

When a Diesel Oxidation Catalyst (DOC) filter starts to fail, it’s a sign that something within the emissions system isn’t working as it should. Because the DOC plays a key role in treating exhaust gases, addressing the issue early can help prevent further complications down the line.

The first step is to verify the problem through diagnostics. A scan tool can identify fault codes and help determine whether the DOC filter itself or another component is causing the issue.

Once confirmed, here are the steps you should take:

  • Check for fault codes
    • related to the emissions system
  • Inspect the exhaust system
    • for blockages or leaks
  • Look for contamination sources
    • such as oil, coolant, or unburned fuel
  • Evaluate the DOC filter condition
    • for restriction or buildup
  • Clean the DOC filter
    • if the contamination is minor and manageable
  • Replace the DOC filter
    • if it is heavily contaminated or damaged

It’s equally important to identify the underlying cause of the failure. Issues like injector problems, poor fuel quality, or engine inefficiencies can lead to repeated DOC filter problems if left unresolved.

Taking a complete approach—diagnosing the issue, correcting the root cause, and addressing the DOC filter itself—will help restore proper emissions function and reduce the risk of future failures.

A restriction can affect exhaust flow and may lead to system warnings or reduced efficiency.

The filter is installed in the aftertreatment assembly near the beginning of the exhaust flow path.

The DOC stage targets hydrocarbons and carbon monoxide present in diesel exhaust.

They verify compatibility by matching the OEM number with the engine model and production years.

Cummins DOC Filters