Loading...

Cummins DEF Head Unit : OEM ASP5510-6506718

CUMMINS DEF HEAD UNIT : OEM ASP5510-6506718

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$1,500.00

-
+
AVAILABILITY IN STOCK
OEM NUMBER ASP5510-6506718
PART TYPE DEF Head Unit
BRAND DuraWRX
ENGINE MAKE Cummins
ENGINE TYPE
YEAR
PART NUMBER ASP5510-6506718
APPLICATION NOTES Electrical Connector: Deutsch DTM04-3P and Deutsch DTM04-2P Sensor Type: Analog DEF Header Height (IN): 18
ADDITIONAL NOTES DEF Header, 40 MICRON, 18"

PRODUCT DESCRIPTION

This is a New, DuraWRX DEF Head Unit, DuraWRX part number ASP5510-6506718 ( OEM Part Number ASP5510-6506718 ). This part is primarily made for a Cummins , and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

Additional Notes: DEF Header, 40 MICRON, 18"

OEM NUMBERS

Primary OEM ASP5510-6506718
Additional OEM 34812, 37340, 909934, 3600821, 10344986, 8604149-S02, 90035155, 90035430, 90035877, ASP5510-6506718

ADDITIONAL DETAILS

CONDITION New
UPC / Barcode
WEIGHT 4.00 LBS

SHIPPING OPTIONS

Ship Weight : 4.00 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.

"This Product Doesn't Have a Core"


The Cummins DEF Head Unit: OEM ASP5510-6506718 delivers precise DEF fluid level and quality readings, allowing your emissions system to function smoothly and remain compliant. Built to OEM standards, this head unit offers reliable data transmission, helping to avoid derates and costly downtime. Its durable construction and easy fitment make it a dependable solution for maintaining consistent diesel engine performance. Count on Tamerx for parts that deliver quality and reliability mile after mile.

PEOPLE ALSO ASKS | BLOG(S)

The DEF (Diesel Exhaust Fluid) head unit is a key part of your emissions system, responsible for monitoring DEF fluid level and temperature. A failing DEF head unit can lead to costly downtime, false warnings, and reduced engine power. The Cummins DEF Head Unit OEM ASP5510-6506718 ensures accurate monitoring, keeping your SCR system working properly and your engine running smoothly.

Benefits of the OEM ASP5510-6506718 DEF Head Unit:

  • Direct replacement built to Cummins factory specifications

  • Accurate DEF level and temperature monitoring

  • Helps maintain emissions compliance and avoid derates

  • Durable design for long-term reliability in demanding environments

  • Quick, hassle-free installation for minimal downtime

A malfunctioning DEF head unit can interrupt operations and trigger unnecessary repairs. The Cummins DEF Head Unit OEM ASP5510-6506718 restores accurate system monitoring, helping you avoid costly derates and emissions failures. Shop TamerX Diesel Parts for trusted OEM parts that keep your diesel equipment dependable and compliant.

 
 

The DEF (Diesel Exhaust Fluid) head unit plays a critical role in monitoring DEF level, temperature, and quality to keep the emissions system running smoothly. Exposure to harsh conditions, contamination, and improper handling can lead to premature failure. Fortunately, adopting proper maintenance practices can help extend the life of your DEF head unit and reduce costly downtime.

Best Maintenance Practices for DEF Head Unit Longevity:

  • Use High-Quality DEF Fluid – Always use ISO 22241-compliant DEF to prevent contamination that can clog or damage the sensors.

  • Keep the DEF Tank Sealed – Ensure the DEF tank cap is tightly closed to prevent dirt, moisture, and air from contaminating the fluid and sensor system.

  • Avoid Cross-Contamination – Use clean, dedicated equipment for handling DEF to avoid introducing foreign substances into the tank.

  • Store DEF Properly – Store DEF between 12°F and 86°F to prevent freezing, degradation, or crystallization that can harm the head unit.

  • Inspect for Crystallization – Regularly check for white crystal buildup around the tank opening and sensors, and clean carefully if needed.

  • Maintain Electrical Connections – Periodically inspect wiring and connectors for corrosion, loose connections, or damage that could affect sensor signals.

  • Address System Warnings Promptly – Don’t ignore DEF system fault codes or warning lights, as they may signal early sensor or head unit issues.

Taking care of your DEF head unit through simple but consistent maintenance practices can significantly extend its service life. Clean DEF, proper storage, careful handling, and regular inspections help prevent premature failures and keep your emissions system functioning reliably for the long haul.

Sensor signal loss, electrical malfunction, and sensor fouling are typical internal failure modes.

By delivering correct DEF data, it ensures the emission system operates properly and prevents engine derating.

Yes, software or firmware glitches can cause data communication errors between the sensor and the ECU.

Even minor DEF impurities can interfere with its ability to measure fluid quality correctly.

 

Cummins DEF Head Units