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Cummins DEF Head Unit : OEM ASP5310-6606718

CUMMINS DEF HEAD UNIT : OEM ASP5310-6606718

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$1,200.00

CORE CHARGE:

$250.00
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 NUMBERASP5310-6606718
PART TYPEDEF Head Unit
BRANDDuraWRX
ENGINE MAKECummins
ENGINE TYPE
YEAR
PART NUMBERASP5310-6606718
APPLICATION NOTESElectrical Connector: Delphi WPT-4 and Delphi WPT-3 Sensor Type: Analog DEF Header Height (IN): 18
ADDITIONAL NOTESDEF Header, 40 MICRON, 18"

PRODUCT DESCRIPTION

This is a Remanufactured, DuraWRX DEF Head Unit, DuraWRX part number ASP5310-6606718 ( OEM Part Number ASP5310-6606718 ). 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

OEM NUMBERS

Primary OEMASP5310-6606718
Additional OEM5011806, 10019935, 10027844, 10035950, 10056545, ASP5310-6606718

ADDITIONAL DETAILS

CONDITIONNew
UPC / Barcode
WEIGHT4.00 LBS

SHIPPING OPTIONS

Ship Weight : 4.00 LBS
UPS Ground, 2nd Day Air, Next Day Air

SHIPPING POLICY

Drive On Diesel 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 Drive On Diesel 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.

Drive On Diesel 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 Drive On Diesel, 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). Drive On Diesel 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 Drive On Diesel, 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. Drive On Diesel 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 Drive On Diesel core charge presented to you online today with your item is representative of the most common core charge.


PEOPLE ALSO ASKS | BLOG(S)

The OEM ASP5310-6606718 DEF head unit is a critical component in Cummins engines equipped with Selective Catalytic Reduction (SCR) systems. This unit is responsible for monitoring Diesel Exhaust Fluid (DEF) levels, temperature, and delivering fluid to the dosing module, all while communicating with the engine’s control system.

When the DEF head fails, it can result in incorrect readings, warning codes, or system shutdowns. Replacing it with the correct OEM part ensures proper communication and fluid handling.

Core features of the OEM ASP5310-6606718 include:

  • Integrated Level Sensor
    • Reports real-time DEF levels to the ECM
  • Built-In Heater Element
    • Prevents fluid from freezing in low temperatures
  • Temperature Sensor
    • Ensures accurate dosing under variable conditions
  • OEM-Compatible Connector
    • Allows easy plug-in with Cummins wiring harness
  • Standard Tank Mounting
    • Designed for direct installation on compatible DEF tanks

Verify your equipment’s compatibility and confirm the OEM part number (ASP5310-6606718) before ordering.

This DEF head unit is suitable for a wide range of Cummins-powered commercial, industrial, and vocational vehicles that require precise emissions system management.

A failing DEF (Diesel Exhaust Fluid) head unit can trigger system warnings, cause inaccurate readings, or lead to serious driveability issues. Spotting the signs early can help avoid unnecessary downtime and expensive repairs.

Common Signs of a Bad DEF Head Unit:

  • Inaccurate DEF Level Readings
    • The dash may show full when the tank is low—or empty when it’s clearly filled.
  • “Service DEF System” Warning
    • This message often appears when the head unit fails to report accurate data to the ECM.
  • Check Engine Light or DEF-Related Codes
    • Diagnostic codes like SPN 3364, SPN 1761, or SPN 5246 may appear, pointing to sensor or communication faults.
  • DEF Mileage Countdown or Derate Warning
    • You might see messages like “XX miles until speed limited”, indicating the system can't verify DEF status.
  • No DEF Flow Detected
    • If the truck reports no DEF usage, despite normal driving, the sensor or internal heater may have failed.

How to Confirm the Issue:

  • Use an OBD-II or HD diagnostic tool to read trouble codes
  • Visually inspect the harness and connector for corrosion or damage
  • Check for manufacturer recalls or technical service bulletins (TSBs)

If these signs are present, replacing the DEF head unit is often the only fix. Clearing codes and running a drive cycle afterward helps confirm successful repair.

It manages diesel exhaust fluid (DEF) suction, heating, temperature sensing, and level monitoring in SCR-based emissions systems.

Cummins DEF Head Units