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Cummins DEF Head Unit : OEM ASP4310-6500713

CUMMINS DEF HEAD UNIT : OEM ASP4310-6500713

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$895.00

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 NUMBERASP4310-6500713
PART TYPEDEF Head Unit
BRANDDuraWRX
ENGINE MAKECummins
ENGINE TYPE
YEAR
PART NUMBERASP4310-6500713
APPLICATION NOTESElectrical Connector: Deutsch DT4 Sensor Type: Digital (canbus) DEF Header Height (IN): 13
ADDITIONAL NOTESDEF Header, 40 MICRON, 13"

PRODUCT DESCRIPTION

This is a New, DuraWRX DEF Head Unit, DuraWRX part number ASP4310-6500713 ( OEM Part Number ASP4310-6500713 ). 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, 13"

OEM NUMBERS

Primary OEMASP4310-6500713
Additional OEM2520611C1, 2613963C2, 721456, 723057, 724525, ASP4310-6500713, DC4Z-5J250-B, DC4Z-5J250-C, FC4Z-5J229-C, FC4Z-5J242-A, RP169195, RP169230, RP169235

ADDITIONAL DETAILS

CONDITIONNew
UPC / Barcode
WEIGHT3.00 LBS

SHIPPING OPTIONS

Ship Weight : 3.00 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.


Ensure efficient DEF system performance with the Cummins DEF Head Unit: OEM ASP4310-6500713—a critical component designed to maintain accurate fluid level and quality readings. Built to meet OEM specifications, this high-quality unit delivers dependable sensor communication and compatibility for a wide range of Cummins applications. Whether you're replacing a failing unit or upgrading for reliability, this DEF head ensures your emissions system stays compliant and operational. Trust Tamerx to supply the part that keeps your engine running clean and trouble-free.

PEOPLE ALSO ASKS | BLOG(S)

The DEF head unit is a crucial part of your diesel emissions system, responsible for monitoring and delivering Diesel Exhaust Fluid from the tank to the aftertreatment system. For many Cummins-powered vehicles, the DEF Head Unit OEM ASP4310-6500713 is the standard component. Knowing what can cause this unit to fail helps prevent breakdowns and ensures continued emissions compliance.

Why Replace with OEM ASP4310-6500713:

  • Built to Cummins standards for compatibility and durability

  • Supports proper DEF dosing and system monitoring

  • Helps prevent SCR system faults and engine derate modes

  • Direct-fit replacement for fast, hassle-free installation

Replacing a faulty DEF head unit is essential for keeping your emissions system functional and avoiding unnecessary downtime. The Cummins OEM ASP4310-6500713 DEF Head Unit provides reliable operation and accurate readings to keep your system in check. Shop confidently at TamerX Diesel Parts for quality emissions components that meet OEM standards.

 

The DEF (Diesel Exhaust Fluid) head unit is a key component of the Selective Catalytic Reduction (SCR) system, responsible for monitoring fluid levels, temperature, and quality. When the DEF head fails, it can trigger warning lights, limit engine performance, or prevent proper emissions treatment. Understanding the common causes of DEF head unit failures can help prevent costly downtime and repairs.

Common Reasons for DEF Head Unit Failure:

  • Contaminated DEF Fluid – Dirt, water, or poor-quality DEF can damage sensors or block internal passages within the head unit.

  • Crystallization – DEF can form white crystals when exposed to air or temperature changes, clogging sensors and internal components.

  • Electrical Connector Issues – Damaged, corroded, or loose wiring can disrupt signals between the DEF head and the control module.

  • Temperature Extremes – Extreme cold or heat can affect sensor accuracy or damage internal electronics.

  • Aging Sensors – Over time, the level, quality, and temperature sensors inside the DEF head can degrade and produce inaccurate readings.

  • Software or Calibration Faults – In some cases, failures may stem from software glitches or incompatibility with engine control modules.

  • Physical Damage – Impact, vibration, or improper installation can lead to cracks or broken components within the DEF head.

DEF head unit failures are often caused by contamination, crystallization, or environmental stress. Regular inspection, using clean DEF, and protecting electrical connections can help extend the life of the DEF head. If symptoms like warning lights or derates occur, timely diagnostics and repairs can restore proper system function and keep your engine running clean.

Failure may lead to inaccurate DEF readings, triggering warning lights and potentially placing the vehicle into limp mode.

Signs include erratic DEF level readings, fault codes, and dashboard alerts related to emissions or SCR systems.

While it doesn’t impact engine power directly, incorrect readings can cause emission system errors that restrict engine operation.

Contamination may be indicated by sensor faults or abnormal DEF quality readings.

 

Cummins DEF Head Units

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