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Case IH / New Holland DEF Doser Injector : OEM 47581674

CASE IH / NEW HOLLAND DEF DOSER INJECTOR : OEM 47581674

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$189.95

CORE CHARGE:

$50.00
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 NUMBER47581674
PART TYPEDEF Doser Injector
BRANDTamerx Diesel Products
ENGINE MAKECase IH / New Holland
ENGINE TYPE
YEAR
PART NUMBER47581674TX

PRODUCT DESCRIPTION

This is a New, Tamerx DEF Doser Injector, Tamerx part number 47581674TX ( OEM Part Number 47581674 ). This part is primarily made for a Case IH / New Holland , and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

OEM NUMBERS

Primary OEM47581674
Additional OEM47581674

ADDITIONAL DETAILS

CONDITIONNew
UPC / Barcode
WEIGHT1.00 LBS

SHIPPING OPTIONS

Ship Weight : 1.00 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.


Prep your Case IH or New Holland equipment for cleaner operation and emission compliance with the OEM 47581674 DEF Doser Injector from Tamerx — a direct-fit replacement designed for precise DEF delivery. This high-quality injector ensures accurate dosing into the exhaust stream, helping reduce NOx emissions and keep your engine running efficiently under heavy workloads. Built to handle intense heat, vibration, and continuous use, it delivers dependable performance no matter the job. Trust this OEM-grade injector to maintain smooth, emissions-friendly operation and keep your machinery working hard for years to come.

PEOPLE ALSO ASKS | BLOG(S)

The DEF system plays a crucial part in helping modern diesel engines operate cleanly and efficiently, and one of its most important components is the DEF doser injector. The Case IH / New Holland DEF Doser Injector (OEM 47581674) is designed to deliver accurate DEF flow into the exhaust stream, supporting proper emissions control and dependable system function. For customers searching for a reliable replacement, understanding what this injector does—and why it matters—can make choosing the right part much easier.

This component maintains consistent DEF delivery, ensuring the emissions system functions correctly. Below are key points that highlight its essential role:

  • Accurate DEF Injection – Meters the correct amount of DEF into the exhaust stream to support emissions conversion.

  • Supports System Efficiency – Helps prevent issues such as clogged SCR catalysts, warning lights, or derate modes.

  • Prevents Crystallization Build-Up – Reduces the risk of DEF crystallizing and restricting exhaust flow.

  • OEM-Grade Replacement – The OEM 47581674 injector matches original specifications for proper fit and long-term reliability.

  • Restores Proper DEF System Operation – Replacing a failing injector helps eliminate DEF-related system faults.

Replacing a malfunctioning DEF doser injector is essential for keeping your emissions system operating as designed. The Case IH / New Holland DEF Doser Injector (OEM 47581674) delivers dependable DEF dosing to support stable system performance and reduce the chance of costly downtime. Customers can rely on Tamerx to provide high-quality parts that help keep their equipment running smoothly and reliably.

The DEF (Diesel Exhaust Fluid) injector is an important part of a diesel engine’s emissions system. It sprays DEF into the exhaust stream to break down harmful nitrogen oxides (NOx) into harmless gases. Over time, the DEF injector can become clogged or fail due to fluid quality issues, contamination, or poor maintenance. Understanding the causes of DEF injector failure can help you prevent costly repairs and downtime.

Common Causes of DEF Injector Failure or Clogging

  • Crystallization Buildup
    When DEF is exposed to air, it can crystallize, leading to buildup around the injector nozzle that restricts proper spraying.

  • Contaminated DEF Fluid
    Dirt, debris, or water in the DEF tank can damage the injector’s tip or clog the internal passages.

  • Poor-Quality DEF
    Using non-ISO 22241-certified DEF can introduce impurities that degrade injector performance and lifespan.

  • Excessive Idling or Low Exhaust Temperatures
    If the exhaust doesn’t reach proper operating temperature, DEF may not fully vaporize, leaving residue that causes clogging.

  • Electrical or Solenoid Failures
    Internal electrical faults or damaged wiring can prevent the injector from opening and closing properly.

  • Improper Maintenance
    Skipping regular DEF system inspections or neglecting to clean buildup can shorten the injector’s service life.

DEF injector failures are usually preventable with good maintenance and high-quality DEF fluid. Regular inspections, proper cleaning, and avoiding long idling periods can keep the injector working efficiently. By taking preventive measures, you’ll ensure cleaner emissions, better performance, and longer system reliability.

 

The injector works with standard DEF fluid; using poor-quality or contaminated DEF may clog or damage the injector.

Depending on contamination severity — sometimes cleaning may help, but often replacement is recommended to ensure proper function.

If the cause is injector failure, then yes — replacing the injector may clear codes and restore proper DEF dosing.

It’s wise to inspect the injector whenever you service the DEF system, or if you notice performance issues or warning messages.

Case IH / New Holland DEF Doser Injectors

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