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Cummins DEF Doser Injector 2018-2024: OEM 5633310

CUMMINS DEF DOSER INJECTOR 2018-2024: OEM 5633310

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$895.00

CORE CHARGE:

$100.00
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 NUMBER5633310
PART TYPEDEF Doser Injector
BRANDTamerx Diesel Products
ENGINE MAKECummins
ENGINE TYPE
YEAR2018-2024
PART NUMBER5633310RM
ADDITIONAL NOTES24 Volt

PRODUCT DESCRIPTION

This is a New, Tamerx DEF Doser Injector, Tamerx part number 5633310RM ( OEM Part Number 5633310 ).This part is primarily made for a Cummins , production years 2018-2024, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

Additional Notes: 24 Volt

OEM NUMBERS

Primary OEM5633310
Additional OEM5633310

ADDITIONAL DETAILS

CONDITIONNew
UPC / Barcode00840490539679
WEIGHT2.00 LBS

SHIPPING OPTIONS

Ship Weight : 2.00 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.


Keep your emissions system operating as intended with the Cummins DEF Doser Injector 2018–2024, OEM Part Number 5633310. Designed specifically for late-model Cummins applications, this injector precisely meters Diesel Exhaust Fluid (DEF) into the exhaust stream to support proper aftertreatment function and emissions compliance. Manufactured to meet OEM specifications, it ensures accurate fitment and dependable operation across a range of 2018–2024 Cummins engines. Replacing a faulty DEF doser injector can help address issues such as fault codes, poor DEF distribution, or aftertreatment system inefficiencies. Trust Tamerx Diesel Products LLC for reliable components that help keep your Cummins engine running cleanly and efficiently.

FITMENT CHART

YEARMAKEENGINE(S)
2018Cummins
2019Cummins
2020Cummins
2021Cummins
2022Cummins
2023Cummins
2024Cummins

PEOPLE ALSO ASKS | BLOG(S)

Modern diesel engines rely on advanced aftertreatment systems to control emissions, and the Cummins DEF Doser Injector OEM 5633310 plays a key role in that process. Designed for 2018–2024 applications, this injector delivers Diesel Exhaust Fluid (DEF) into the exhaust stream to support Selective Catalytic Reduction (SCR).

The doser injector works by precisely spraying DEF into hot exhaust gases. DEF is a mixture of urea and deionized water that reacts with nitrogen oxide (NOx) emissions inside the SCR catalyst.

Here’s how the system operates step by step:

  • The engine control module (ECM) monitors exhaust conditions
  • When needed, the ECM signals the DEF pump to supply fluid
  • The DEF doser injector receives a command to open
  • A fine mist of DEF is sprayed into the exhaust stream
  • Heat converts DEF into ammonia
  • Ammonia reacts with NOx inside the SCR catalyst
  • Harmful NOx is converted into nitrogen and water vapor

The injector must deliver the correct amount of DEF at the right time to maintain proper emissions control. Too little DEF can result in increased NOx levels, while too much can lead to crystallization or exhaust deposits.

The OEM 5633310 doser injector is engineered to integrate with Cummins aftertreatment systems, ensuring proper spray pattern, timing, and compatibility with sensors and control modules.

When functioning correctly, the Cummins DEF Doser Injector supports emissions compliance, clean exhaust output, and reliable operation of the SCR system.

The DEF doser injector is responsible for spraying Diesel Exhaust Fluid into the exhaust stream to support proper emissions treatment. Because it operates in a high-heat environment and handles fluid that can crystallize, buildup is a common concern.

Whether it is serviceable depends on the type and severity of the issue.

In some cases, the DEF doser injector may be serviceable if the problem involves:

  • Minor crystallization on the nozzle tip
  • Light DEF deposits affecting spray pattern
  • Electrical connector corrosion
  • Damaged wiring outside the injector body
  • Worn mounting seals or gaskets

Careful cleaning of light buildup or repairing wiring issues may restore normal operation if the internal components are still functioning correctly.

However, replacement is typically necessary if there is:

  • Internal electrical failure
  • Severe crystallization blocking flow
  • Cracked or damaged injector housing
  • Persistent dosing fault codes after cleaning
  • Failed activation or resistance testing

Once DEF hardens inside the injector or internal components fail electrically, repair options are very limited.

A professional diagnostic evaluation is essential. Technicians will scan for fault codes, test injector activation, and inspect spray function to determine whether cleaning is possible or full replacement is required.

The Cummins 5633310 DEF Doser Injector precisely sprays Diesel Exhaust Fluid into the exhaust stream to help reduce NOx emissions.

Yes, OEM 5633310 is a direct-fit replacement designed to match the original factory-installed DEF doser injector.

The Cummins 5633310 DEF Doser Injector is typically mounted in the exhaust system near the SCR catalyst.

Common signs include fault codes related to the SCR system, increased DEF consumption, or warning lights on the dashboard.

Cummins DEF Doser Injectors