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Cummins X12, X15 DOC 2018-2022: OEM 5509698RX

CUMMINS X12, X15 DOC 2018-2022: OEM 5509698RX

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$2,995.00

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 NUMBER5509698RX
PART TYPEDOC
BRANDSkyline Emissions
ENGINE MAKECummins
ENGINE TYPEX12, X15
YEAR2018-2022
PART NUMBERXQ0461-C
APPLICATION NOTESEPA17
ADDITIONAL NOTES1x of CL056, 1x of CL070,1x of GA056, 1x of GA070

PRODUCT DESCRIPTION

This is a New, Skyline Emissions DOC, Skyline Emissions part number XQ0461-C ( OEM Part Number 5509698RX ).This part is primarily made for a Cummins X12, X15, production years 2018-2022, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

Additional Notes: 1x of CL056, 1x of CL070,1x of GA056, 1x of GA070

OEM NUMBERS

Primary OEM 5509698RX
Additional OEM 2520174C1, 4394756, 4394756NX, 4394756RX, 4394855, 4394855RX, 5509698, 5509698RX, A055J297, A055N645, CMI2520174C1

ADDITIONAL DETAILS

CONDITION New
UPC / Barcode 00840490543041
WEIGHT 55.90 LBS

SHIPPING OPTIONS

Ship Weight : 55.90 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.


Kick your exhaust performance into high gear with the Cummins X12, X15 DOC 2018–2022 (OEM 5509698RX), engineered to clean up emissions right at the source. This Diesel Oxidation Catalyst fits X12 and X15 engines perfectly, helping reduce harmful exhaust components while supporting smoother aftertreatment operation. Built to OEM standards for long-lasting durability and dependable performance, it’s a smart upgrade for hardworking rigs. Drive cleaner, stay compliant, and keep your fleet running strong with this must-have DOC.

FITMENT CHART

YEARMAKEENGINE(S)
2018Cummins X12 X15
2019Cummins X12 X15
2020Cummins X12 X15
2021Cummins X12 X15
2022Cummins X12 X15

PEOPLE ALSO ASKS | BLOG(S)

The Diesel Particulate Filter (DPF) is designed to reduce soot emissions by trapping particulate matter from exhaust gases. While its primary purpose is emissions control, the condition of the DPF can also have a direct impact on fuel economy. When the DPF is not functioning properly, the engine must work harder, often leading to increased fuel consumption.

How DPF Issues Can Reduce Fuel Economy

  • Increased Exhaust Backpressure
    A clogged or restricted DPF makes it harder for exhaust gases to exit the engine, reducing efficiency and increasing fuel use.

  • Frequent Regeneration Cycles
    Active regeneration requires additional fuel to raise exhaust temperatures, directly lowering fuel economy.

  • Engine Derate or Efficiency Loss
    To protect the emissions system, the engine control module may alter fueling strategies that reduce efficiency.

  • Incomplete Combustion
    DPF-related problems often stem from poor combustion, which leads to wasted fuel and higher consumption.

  • Sensor-Triggered Overfueling
    Faulty pressure or temperature sensor readings can cause the ECM to inject extra fuel unnecessarily.

  • Turbocharger Stress
    Excess backpressure affects turbo efficiency, forcing the engine to burn more fuel to maintain performance.

Yes—a DPF issue can significantly affect fuel economy. Clogged filters, frequent regenerations, and increased backpressure all contribute to higher fuel consumption. Addressing DPF warnings early and maintaining proper engine operation helps protect both your fuel efficiency and emissions system, saving money and preventing further damage.

Life expectancy varies based on driving conditions, maintenance, and engine use, but OEM-grade catalysts are engineered for long-term service life. Regular maintenance and monitoring help ensure lasting performance.

After installing a new DOC, you may need to clear any stored emissions fault codes so the engine control module recognizes the new part. Consult your service manual or technician for the proper reset procedure.

Exposure to contaminated fuel, excessive soot buildup, or poor maintenance practices can shorten the life of the catalyst. Keeping up with scheduled maintenance helps prolong the unit’s performance.

Delaying replacement of a failing DOC can lead to persistent emissions warnings, reduced engine efficiency, and possible exhaust system issues. Timely replacement helps maintain emissions compliance and the overall health of your engine.

Cummins DOCs

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