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Cummins B6.7 DOC Filter 2014-2021: OEM 5418516

CUMMINS B6.7 DOC FILTER 2014-2021: OEM 5418516

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$5,950.00

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 NUMBER5418516
PART TYPEDOC Filter
BRANDTamerx Diesel Products
ENGINE MAKECummins
ENGINE TYPEB6.7
YEAR2014-2021
PART NUMBER5418516RM-DOC
WARRANTY
One Million Miles or One Year

PRODUCT DESCRIPTION

This is a Remanufactured Tamerx DOC Filter, Tamerx part number 5418516RM-DOC ( OEM Part Number 5418516 ). 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 B6.7, production years 2014-2021, and comes with a One Million Miles or One Year Warranty.

OEM NUMBERS

Primary OEM5418516
Additional OEM5418516

ADDITIONAL DETAILS

CONDITIONRemanufactured
UPC / Barcode00840490558250
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 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, 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 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.


Helping maintain proper exhaust treatment in diesel applications, the Cummins B6.7 DOC Filter (2014–2021) OEM 5418516 is an important component of the engine’s emissions control system. Manufactured according to original equipment specifications, this diesel oxidation catalyst is designed for proper fitment with applicable Cummins B6.7 engines within the specified model years. It supports the oxidation process that converts harmful hydrocarbons and carbon monoxide into less harmful compounds while assisting with exhaust treatment before gases move through subsequent aftertreatment components. Its durable construction is designed to withstand elevated exhaust temperatures, vibration, and demanding operating conditions commonly encountered in commercial vehicles and diesel equipment. Suitable for fleet operators, maintenance technicians, and professional diesel repair facilities, this OEM DOC filter provides a dependable replacement solution for maintaining proper emissions system function and consistent long-term operation.

FITMENT CHART

YEARMAKEENGINE(S)
2014Cummins B6.7
2015Cummins B6.7
2016Cummins B6.7
2017Cummins B6.7
2018Cummins B6.7
2019Cummins B6.7
2020Cummins B6.7
2021Cummins B6.7

PEOPLE ALSO ASKS | BLOG(S)

Taking proper care of your Cummins B6.7 DOC Filter 2014-2021: OEM 5418516 is important for maintaining effective exhaust treatment and supporting the operation of the Diesel Particulate Filter (DPF). As part of the diesel aftertreatment system, the Diesel Oxidation Catalyst (DOC) helps reduce carbon monoxide (CO) and unburned hydrocarbon (HC) emissions while supporting the exhaust temperatures needed for DPF regeneration.

Without proper maintenance, the DOC filter may become contaminated, damaged, or less effective at treating exhaust gases, potentially affecting other aftertreatment components.

How Can You Properly Maintain Your DOC Filter?

  • Follow recommended engine maintenance intervals Regular oil changes, fuel system inspections, and air filter replacements help maintain proper combustion and reduce the risk of catalyst contamination.
  • Use the correct engine oil Always use engine oil that meets Cummins specifications to help minimize ash deposits and protect emissions-control components.
  • Maintain the fuel injection system Address leaking injectors or improper fuel delivery promptly to prevent excessive unburned fuel from entering the exhaust system.
  • Monitor DPF regeneration cycles Pay attention to frequent, incomplete, or interrupted regeneration events, as these may indicate problems affecting the DOC or related components.
  • Inspect the exhaust system for leaks Check exhaust pipes, clamps, and connections for damage or leakage that could interfere with proper exhaust temperatures and treatment.
  • Check exhaust temperature sensors Properly functioning sensors help the electronic control system monitor exhaust conditions and manage aftertreatment processes.
  • Address emissions warning lights promptly Investigate DOC efficiency faults, regeneration problems, or other aftertreatment warning codes before they lead to additional system issues.
  • Avoid improper cleaning procedures Do not use unapproved chemicals, pressure washing, or abrasive cleaning methods that could damage the catalyst's internal coating.

Protecting Your DOC Filter for Long-Term Use

The Cummins B6.7 DOC Filter (OEM 5418516) plays an important role in reducing exhaust pollutants and supporting proper DPF regeneration. If the catalyst becomes contaminated, damaged, restricted, or inefficient, it may contribute to incomplete regeneration, excessive soot accumulation, emissions warning lights, or aftertreatment fault codes.

Maintaining the engine, using specification-correct fluids, and addressing fuel, exhaust, or sensor-related problems promptly can help extend the DOC filter's service life and support reliable exhaust treatment.

A Diesel Oxidation Catalyst (DOC) Filter plays an important role in reducing harmful exhaust emissions and supporting the diesel aftertreatment system. Over time, contamination, excessive heat, engine problems, and physical deterioration can cause the DOC Filter to lose its effectiveness or fail prematurely.

Here are several common causes of DOC Filter failure:

  • Excessive soot accumulation Poor combustion, faulty fuel injectors, or other engine problems can produce excessive soot and deposits that interfere with normal catalyst operation.
  • Oil contamination Engine oil entering the exhaust system through worn engine components or turbocharger problems can coat the catalyst material and reduce its effectiveness.
  • Coolant contamination Internal coolant leaks can introduce contaminants into the exhaust stream, potentially damaging the catalyst coating.
  • Excessive exhaust temperatures Abnormally high temperatures can crack, melt, or permanently damage the internal catalyst substrate.
  • Fuel system malfunctions Leaking injectors, incorrect fuel delivery, or incomplete combustion can allow excessive unburned fuel to reach the DOC Filter.
  • Improper regeneration conditions Problems during DPF regeneration can expose the DOC Filter to abnormal temperatures or excessive fuel accumulation.
  • Incorrect fuel or engine oil Fuel or lubricants that do not meet manufacturer specifications can introduce substances that contaminate or chemically deactivate the catalyst.
  • Physical damage and vibration Road impacts, excessive vibration, or improper installation can damage the DOC housing or internal catalyst material.
  • Age and normal deterioration Repeated heating and cooling cycles, long operating hours, and gradual catalyst aging can reduce the DOC Filter's effectiveness.

A failing DOC Filter should be properly diagnosed before replacement. Faulty temperature sensors, exhaust leaks, fuel system problems, and DPF restrictions can produce similar symptoms. Identifying and correcting the original cause of failure can help prevent premature damage to the replacement DOC Filter.

Yes, excessive heat, chemical contamination, and prolonged exposure to abnormal exhaust conditions can gradually deteriorate the catalyst material inside the 5418516.

Yes, engine oil entering the exhaust stream can coat the catalyst substrate and interfere with its intended oxidation reactions.

Yes, coolant entering the exhaust system can leave deposits that contaminate the catalyst surface and interfere with proper DOC operation.

Faulty exhaust temperature sensors can produce inaccurate readings that interfere with aftertreatment monitoring and may resemble DOC-related problems.

Cummins DOC Filters