Genuine OEM 099470740064 - Diesel Exhaust Fluid (DEF) Pump

Product Overview

This Genuine OEM 099470740064 Diesel Exhaust Fluid (DEF) pump is the factory-specification component for Mercedes-Benz Sprinter vans equipped with diesel engines. The DEF pump pressurizes and delivers urea solution to the selective catalytic reduction (SCR) system, where it reacts with nitrogen oxides to reduce harmful emissions. This pump fits Sprinter 2500, 3500, and 3500XD models (W906 and W907 chassis) from 2019 to 2025 with 2.0, 2.1, and 3.0-liter diesel powerplants. As a Genuine Mercedes-Benz part, it meets OEM specifications and is backed by dealership warranty coverage, ensuring reliable emissions control performance for your Sprinter fleet or commercial operation.

Symptoms of a Failing DEF Pump

• DEF warning light illuminated on the instrument cluster or dash display
• Reduced engine power or limp mode activation due to emissions system fault
• Difficulty starting the engine or rough idle when cold
• Audible noise or grinding sound from the DEF system area
• Actual or suspected DEF fluid leakage beneath the vehicle
• Check Engine light accompanied by SCR-related diagnostic trouble codes

Cross Reference Numbers

This Genuine OEM 099470740064 is equivalent to or replaces the following part numbers: 099-470-74-00-64, 0994707400.

Vehicle Compatibility

This part fits the Sprinter models below. For Fitment Confidence, please use the vehicle selector tool above to verify exact compatibility for your vehicle.

• Mercedes-Benz Sprinter 2500 3.0 V6 Diesel (W906): 2019–2020
• Mercedes-Benz Sprinter 2500 2.1 L4 Diesel (W906): 2021–2022
• Mercedes-Benz Sprinter 2500 2.0 L4 Diesel (W907): 2023–2025
• Mercedes-Benz Sprinter 3500 3.0 V6 Diesel (W906): 2019–2020
• Mercedes-Benz Sprinter 3500 2.1 L4 Diesel (W906): 2021–2022
• Mercedes-Benz Sprinter 3500 2.0 L4 Diesel (W907): 2023–2025
• Mercedes-Benz Sprinter 3500XD 3.0 V6 Diesel (W906): 2019–2020
• Mercedes-Benz Sprinter 3500XD 2.1 L4 Diesel (W906): 2021–2022
• Mercedes-Benz Sprinter 3500XD 2.0 L4 Diesel (W907): 2023–2025

This may also fit other applications. Please use the vehicle selector tool to verify fitment.

Often Replaced Together

For a complete emissions system service, many owners replace the following at the same time:

• DEF fluid (urea solution) and DEF fluid filter cartridge
• SCR catalyst assembly and associated gaskets
• Engine air filter and cabin air filter during routine maintenance
• Diesel fuel filter and water separator

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Frequently Asked Questions

How do I know if my Mercedes-Benz Sprinter DEF pump is failing?

The most common indicator is a DEF system warning light on your instrument cluster. You may also see a Check Engine light with SCR-related fault codes, experience reduced engine power or limp mode, notice difficulty starting, or hear unusual noises from the DEF system area. Any of these symptoms warrants immediate inspection of the DEF pump and associated emissions components.

What is the difference between the W906 and W907 Sprinter chassis, and does it affect this pump?

The W906 Sprinter (2007–2018) uses the earlier OM642 3.0-liter V6 diesel or OM651 2.1-liter I4 diesel. The W907 Sprinter (2019–2026) introduced the newer OM654 2.0-liter I4 diesel with updated emissions technology. This DEF pump (099470740064) is compatible with both generations across their respective model years, though the pump may have internal design refinements for the newer W907 platform.

Can I replace the DEF pump myself, or do I need professional service?

DEF pump replacement typically requires access to the fuel tank area and careful disconnection of high-pressure fuel and DEF lines. Most DIY technicians benefit from professional guidance or shop service, as improper installation can introduce air into the system or damage emissions components. We recommend consulting your service manual or a qualified Mercedes-Benz technician for installation support.

What happens if I ignore a DEF pump warning light?

Ignoring a DEF system fault can result in progressive engine power loss, eventual limp mode that severely restricts vehicle operation, and potential damage to the SCR catalyst or other emissions components. In some cases, the engine may not restart until the DEF system is repaired. Prompt replacement of a faulty pump prevents costly secondary damage and keeps your Sprinter fleet operational.

Is this a Genuine Mercedes-Benz part, and what warranty does it carry?

Yes, this is a Genuine OEM Mercedes-Benz part manufactured to factory specifications. When purchased through eEuroparts.com and installed at a Mercedes-Benz dealership or authorized service center, it is typically covered by the dealership's parts warranty. Always verify warranty terms with your service provider at the time of installation.

How long does a DEF pump typically last, and when should I expect to replace it?

DEF pump lifespan depends on vehicle usage, fuel quality, and maintenance practices. Most pumps perform reliably for the life of the vehicle under normal conditions, but they can fail prematurely if DEF fluid is contaminated, the system is starved of fluid, or the pump is subjected to extreme operating conditions. There is no fixed replacement interval; replacement is needed only when the pump fails or exhibits the symptoms listed above.

Order Genuine OEM 099470740064 today to restore full emissions system function and engine performance on your Mercedes-Benz Sprinter. In-stock orders ship same or next business day from our U.S. warehouse, and our fitment team is one call away if you need help confirming the right part for your Sprinter platform and model year.

Note: All information on this page and in the FAQ is for general reference only. Verify fitment and consult a professional as needed. eEuroparts.com is not responsible for incorrect part selection or installation.