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Cummins QSB4.5, 3.8 SCR Filter 2018-2024: OEM 5505816

CUMMINS QSB4.5, 3.8 SCR FILTER 2018-2024: OEM 5505816

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$5,850.00

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 NUMBER5505816
PART TYPESCR Filter
BRANDTamerx Diesel Products
ENGINE MAKECummins
ENGINE TYPEQSB4.5, 3.8
YEAR2018-2024
PART NUMBER5505816RM-SCR
APPLICATION NOTESStage 5 Hyundai Excavator and truck

PRODUCT DESCRIPTION

This is a Genuine Remanufactured Tamerx SCR Filter, Tamerx part number 5505816RM-SCR ( OEM Part Number 5505816 ). 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 QSB4.5, 3.8, production years 2018-2024, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

OEM NUMBERS

Primary OEM5505816
Additional OEM5505816, 5506738, A060N560, A061L255

ADDITIONAL DETAILS

CONDITIONGenuine Remanufactured
UPC / Barcode00840490552913
WEIGHT65.00 LBS

SHIPPING OPTIONS

Ship Weight : 65.00 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.


Clean up your emissions system with the Cummins QSB4.5, 3.8 SCR Filter 2018–2024 (OEM 5505816), engineered to enhance NOx reduction and support efficient aftertreatment performance. This precision SCR filter fits QSB4.5 and 3.8 engines seamlessly, helping your diesel meet tough emissions standards while maintaining smooth exhaust flow. Built to OEM quality for long-lasting durability and dependable operation, it’s a smart upgrade for hardworking trucks and equipment. Stay compliant and keep your engine running greener with a filter that works as hard as you do.

FITMENT CHART

YEARMAKEENGINE(S)
2018Cummins QSB4.5 3.8
2019Cummins QSB4.5 3.8
2020Cummins QSB4.5 3.8
2021Cummins QSB4.5 3.8
2022Cummins QSB4.5 3.8
2023Cummins QSB4.5 3.8
2024Cummins QSB4.5 3.8

PEOPLE ALSO ASKS | BLOG(S)

The Selective Catalytic Reduction (SCR) filter plays a critical role in controlling emissions on Cummins QSB4.5 and 3.8 engines from 2018 to 2024. Working as part of the SCR system, this filter helps reduce nitrogen oxides (NOx) in the exhaust, contributing to cleaner emissions and helping your engine maintain regulatory compliance. Over time, SCR filters can become worn or restricted, leading to reduced emissions performance and potential fault codes. The Cummins QSB4.5, 3.8 SCR Filter OEM 5505816 from Tamerx Diesel Parts is engineered to meet original equipment specifications, providing a reliable replacement to keep your emissions system operating as intended.

  • Effectively reduces NOx emissions by enabling the SCR system to convert nitrogen oxides into harmless
   nitrogen and water vapor, supporting cleaner exhaust output and environmental compliance

  • Designed for Cummins QSB4.5 & 3.8 engines (2018–2024) ensuring correct fitment, smooth installation,
   and dependable integration with the factory exhaust and aftertreatment system

  • Supports stable exhaust flow by maintaining proper gas movement through the SCR system, helping
   downstream components work efficiently without restriction

  • OEM-grade construction (5505816) offering dependable durability, consistent performance, and
   compatibility with original SCR hardware

  • Ideal for highway and light-to-heavy duty applications where sustained emissions control and efficient
   SCR operation are essential for long-term reliability

Replacing a worn or failing SCR filter with the Cummins QSB4.5, 3.8 SCR Filter OEM 5505816 from Tamerx Diesel Parts helps restore proper emissions treatment and supports long-term exhaust system health. Investing in a high-quality, OEM-matched SCR filter ensures your engine maintains efficient emissions performance and continues operating reliably across diverse driving conditions.

A Selective Catalytic Reduction (SCR) filter relies on proper exhaust temperature and diesel exhaust fluid (DEF) dosing to reduce nitrogen oxide emissions. Weather conditions can influence how efficiently the SCR system operates, especially in extreme temperatures. Understanding these effects helps explain why SCR performance may vary throughout the year.

  • Cold weather impact: Low temperatures can delay DEF thawing and reduce exhaust heat needed for efficient SCR reactions.

  • Extended warm-up times: Cold starts in winter slow the system’s ability to reach optimal operating conditions.

  • DEF crystallization risk: In cold or inconsistent temperatures, improper DEF dosing can lead to crystallized deposits.

  • Hot weather stress: High ambient temperatures can increase exhaust heat and place added strain on sensors and dosing components.

  • Sensor sensitivity: Temperature extremes can affect NOx sensor accuracy and response times.

  • Driving patterns matter: Short trips in cold weather are more likely to interrupt proper SCR operation.

Weather conditions can influence SCR filter performance, particularly during cold starts and short drives. Proper DEF quality, attentive maintenance, and allowing the system to reach operating temperature help ensure consistent SCR efficiency in all seasons.

Consider replacing it if you encounter persistent SCR fault codes, reduced engine performance, or noticeable emissions issues. A clogged or damaged filter can impair the SCR system’s effectiveness.

Typical symptoms include frequent emissions warnings, loss of fuel economy, and engine derate under load. These issues often indicate the filter is no longer processing NOx efficiently.

A blocked SCR filter can cause increased backpressure, reduced power output, and potential engine derate. Timely replacement restores proper exhaust flow and emission control.

Using the right SCR filter ensures your emissions system performs as designed and avoids diagnostic trouble codes. Incorrect or low-quality parts can lead to malfunctions and costly repairs.

Cummins SCR Filters

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