
Cummins L9 DOC Filter 2022-2024: OEM 5418480
CUMMINS L9 DOC FILTER 2022-2024: OEM 5418480

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY
1M MILES OR 1 YEAR
PRODUCT DESCRIPTION
This is a Remanufactured Tamerx DOC Filter, Tamerx part number 102-178RM-DOC-4 ( OEM Part Number 5418480 ). 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 L9, production years 2022-2024, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here
Additional Notes: Inlet Catalyst
OEM NUMBERS
| Primary OEM | 5418480 |
| Additional OEM | 5418480 |
ADDITIONAL DETAILS
| CONDITION | Remanufactured |
| UPC / Barcode | 00840490550070 |
| WEIGHT | 35.00 LBS |
SHIPPING OPTIONS
Ship Weight : 35.00 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.
Covering 2022–2024 Cummins L9 engine applications, the OEM 5418480 DOC Filter is designed to maintain proper exhaust aftertreatment operation and support emissions compliance. This Diesel Oxidation Catalyst (DOC) helps convert harmful exhaust gases into less harmful compounds before they continue through the downstream DPF and SCR system. Built to original equipment specifications, it ensures precise fitment and dependable compatibility with factory-installed sensors and mounting components. Its durable construction is engineered to withstand high exhaust temperatures and the demanding conditions of commercial truck operation. As a direct OEM replacement, this Cummins L9 DOC Filter helps preserve the integrity of the aftertreatment system while reducing the likelihood of unexpected downtime. Tamerx Diesel Products LLC provides reliable diesel emissions components that meet strict manufacturer standards for long-term reliability.
FITMENT CHART
| YEAR | MAKE | ENGINE(S) | ||||
|---|---|---|---|---|---|---|
| 2022 | Cummins | L9 | ||||
| 2023 | Cummins | L9 | ||||
| 2024 | Cummins | L9 | ||||
PEOPLE ALSO ASKS | BLOG(S)
Inside the aftertreatment system of a 2022–2024 Cummins L9 engine, the OEM 5418480 DOC Filter begins the process of reducing exhaust emissions. As a Diesel Oxidation Catalyst (DOC), it uses catalytic reactions to convert harmful gases into less harmful compounds before the exhaust continues through the rest of the emissions system.
When hot exhaust gases exit the engine, they enter the DOC housing and pass through a honeycomb-style catalyst substrate. This internal structure is coated with precious metals such as platinum and palladium, which act as catalysts that trigger oxidation reactions as gases flow through the channels.
How the DOC Filter Works
- Exhaust gases enter the DOC directly from the engine.
- The honeycomb catalyst substrate exposes the gases to a large reactive surface area.
- Carbon monoxide is converted into carbon dioxide.
- Unburned hydrocarbons are oxidized into carbon dioxide and water vapor.
- Heat produced during oxidation helps support DPF regeneration downstream.
The catalyst itself is not consumed during operation. Instead, it continuously facilitates these reactions as long as exhaust temperatures and flow remain within the proper operating range.
By starting the emissions treatment process at the beginning of the exhaust system, the Cummins L9 DOC Filter (OEM 5418480) helps ensure that downstream components function correctly while maintaining emissions compliance for 2022–2024 engines.
A failing DOC (Diesel Oxidation Catalyst) filter often shows warning signs before it completely stops functioning. Because the DOC helps treat exhaust gases, issues with the filter can affect how the engine runs and may trigger system alerts.
One of the earliest indicators is a check engine or emissions warning light on the dashboard. This usually appears when the vehicle detects that the catalyst is not working properly or that exhaust flow is restricted.
Other common signs of a bad DOC filter include:
- Reduced fuel efficiency
- Sluggish acceleration
- Excessive exhaust smoke
- Strong or unusual exhaust odors
- Higher-than-normal exhaust temperatures
- Increased exhaust backpressure
- Frequent aftertreatment system alerts
When the DOC becomes clogged with soot or contaminated by oil or coolant, exhaust gases cannot pass through the system properly. This restriction can affect engine operation and overall drivability.
In more severe situations, extreme heat inside the exhaust system can damage the internal catalyst material, causing cracks or internal breakdown within the filter.
If you notice any of these symptoms, scheduling a professional diagnostic inspection is recommended. Identifying the issue early can help prevent further exhaust system damage and reduce the risk of costly repairs.
The DOC filter 5418480 treats diesel exhaust gases through catalytic oxidation within the aftertreatment system.
It identifies a specific inlet catalyst module designed for Cummins diesel exhaust assemblies.
The filter operates at the beginning of the aftertreatment process where emissions treatment first occurs.
Exhaust gases pass through a catalyst-coated structure that triggers oxidation of certain pollutants.











