
Iveco FPT 6.7L Doser DEF Pump 2008-2020: OEM 50438
IVECO FPT 6.7L DOSER DEF PUMP 2008-2020: OEM 50438

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY
1M MILES OR 1 YEAR
PRODUCT DESCRIPTION
This is a Remanufactured Tamerx Doser DEF Pump, Tamerx part number 5802855457 ( OEM Part Number 50438 ). 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 Iveco FPT 6.7L, production years 2008-2020, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here
Additional Notes: 24 Volt
OEM NUMBERS
| Primary OEM | 50438 |
| Additional OEM | 50438, 504381868, 5802465020, 5802855457, 91894B01 |
ADDITIONAL DETAILS
| CONDITION | Remanufactured |
| UPC / Barcode | 00840490536524 |
| WEIGHT | 12.00 LBS |
SHIPPING OPTIONS
Ship Weight : 12.00 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.
Designed for Iveco FPT 6.7L engines produced between 2008 and 2020, OEM 50438 is a DEF (Diesel Exhaust Fluid) doser pump engineered to accurately meter and supply DEF into the SCR aftertreatment system. This component is manufactured to OEM specifications to ensure proper fitment and compatibility with factory dosing and exhaust assemblies. Constructed from durable materials, it is built to withstand the operating conditions common in medium- and heavy-duty diesel applications. The pump supports controlled DEF delivery to help maintain emissions control effectiveness. It is a dependable option for fleet maintenance and targeted repair needs requiring reliable aftertreatment system performance.
FITMENT CHART
| YEAR | MAKE | ENGINE(S) | ||||
|---|---|---|---|---|---|---|
| 2008 | Iveco FPT | 6.7L | ||||
| 2009 | Iveco FPT | 6.7L | ||||
| 2010 | Iveco FPT | 6.7L | ||||
| 2011 | Iveco FPT | 6.7L | ||||
| 2012 | Iveco FPT | 6.7L | ||||
| 2013 | Iveco FPT | 6.7L | ||||
| 2014 | Iveco FPT | 6.7L | ||||
| 2015 | Iveco FPT | 6.7L | ||||
| 2016 | Iveco FPT | 6.7L | ||||
| 2017 | Iveco FPT | 6.7L | ||||
| 2018 | Iveco FPT | 6.7L | ||||
| 2019 | Iveco FPT | 6.7L | ||||
| 2020 | Iveco FPT | 6.7L | ||||
PEOPLE ALSO ASKS | BLOG(S)
The Iveco FPT 6.7L Doser DEF Pump 2008–2020: OEM 50438 is a Diesel Exhaust Fluid (DEF) supply pump used in engines equipped with a Selective Catalytic Reduction (SCR) emissions system. Its primary function is to draw DEF from the storage tank, pressurize it, and deliver it to the dosing injector in the exhaust system.
In SCR-equipped Iveco and FPT 6.7L engines, reducing nitrogen oxide emissions requires precise DEF injection into the exhaust stream. The DEF pump ensures that fluid is delivered at the correct pressure and volume based on commands from the engine control unit (ECU).
As the engine operates, the ECU monitors exhaust conditions and determines how much DEF is required. OEM 50438 responds by supplying the appropriate amount of fluid to the injector, where it is sprayed into the exhaust upstream of the SCR catalyst. Once exposed to heat, DEF breaks down into ammonia, which reacts with nitrogen oxides to convert them into nitrogen and water vapor.
Key functions of the Iveco FPT DEF pump include:
- Drawing DEF from the tank
- Pressurizing fluid for accurate dosing
- Working in coordination with the ECU
- Supporting SCR emissions reduction
Designed for 2008–2020 Iveco FPT 6.7L applications, OEM 50438 is a critical component for maintaining emissions compliance and ensuring proper aftertreatment system operation.
Prolonging the lifespan of your DEF doser pump starts with protecting the DEF system from contamination, crystallization, and electrical stress. The doser pump pressurizes Diesel Exhaust Fluid and delivers it to the injector, so clean fluid and proper system maintenance are critical to long-term reliability.
The most important factor is using high-quality DEF that meets ISO 22241 standards. Poor-quality or contaminated DEF can damage internal seals, clog passages, and cause premature motor wear. Always store DEF in sealed containers away from heat and direct sunlight to prevent degradation.
Midway through routine service, focus on these best practices:
- Use only certified DEF from reputable suppliers
- Keep DEF filling equipment clean and dedicated
- Replace DEF filters at recommended intervals (if equipped)
- Inspect tank and lines for crystallization buildup
- Avoid running the DEF tank completely dry
- Allow proper shutdown cycles so the system can purge
Electrical health is also critical. Inspect wiring harnesses and connectors for corrosion, loose pins, or voltage irregularities that can strain the pump motor.
In most cases, DEF doser pump failure is caused by contamination or neglected maintenance rather than normal wear. Consistent DEF quality control, proper storage, routine inspection, and early correction of dosing or pressure faults are the most effective ways to extend pump lifespan and maintain reliable SCR system performance.
Heavy-duty trucks and commercial vehicles equipped with Iveco FPT 6.7L engines from 2008–2020 use this DEF pump.
Yes, a diagnostic scan is typically recommended after installation to confirm proper integration with the DEF and engine control systems.
Yes, professional installation is advised due to the need for correct fluid line connections and control system calibration.
It delivers controlled amounts of diesel exhaust fluid into the exhaust aftertreatment system for emissions management.

