Liugong Construction Machinery Cummins ISB 6.7L DEF Head Unit
LIUGONG CONSTRUCTION MACHINERY CUMMINS ISB 6.7L DEF HEAD UNIT
ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY
WARRANTY
1M MILES OR 1 YEAR
PRODUCT DESCRIPTION
This is a Remanufactured, Tamerx DEF Head Unit, Tamerx part number 4310-11-11 ( OEM Part Number SP229515 ). This part is primarily made for a Cummins ISB 6.7L, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here
Additional Notes: DEF Header, 40 MICRON, 11"
OEM NUMBERS
| Primary OEM | SP229515 |
| Additional OEM | SP229515 |
ADDITIONAL DETAILS
| CONDITION | Remanufactured |
| UPC / Barcode | 00840490540064 |
| WEIGHT | 8.00 LBS |
SHIPPING OPTIONS
Ship Weight : 8.00 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.
Accurate DEF system management is supported by the Liugong Construction Machinery Cummins ISB 6.7L DEF Head Unit: OEM SP229515, a direct-fit component for compatible equipment. Built to OEM specifications, this unit monitors fluid level, quality, and temperature to help maintain emissions compliance and dependable system operation. Its durable design withstands demanding work conditions, protecting the aftertreatment system and overall engine efficiency. By choosing an OEM DEF head unit, you reduce the risk of compatibility issues and ensure long-term reliability. This component is a proven solution for keeping Liugong Cummins-powered machinery running efficiently and in compliance with emissions standards.
PEOPLE ALSO ASKS | BLOG(S)
The DEF Head Unit, part number SP229515, is a critical emissions control component used in Liugong construction machinery powered by the Cummins ISB 6.7L diesel engine. This unit is part of the DEF (Diesel Exhaust Fluid) system, which reduces nitrogen oxide (NOₓ) emissions and helps maintain compliance with environmental regulations.
This DEF head unit is typically a remanufactured module built to meet OEM specifications. It is designed as a direct-fit replacement and often comes with a 40-micron internal filter, standardized electrical connectors, and a sturdy 11-inch header body. The unit is backed by a one-year or one-million-mile warranty in most cases.
The SP229515 DEF Head Unit performs several essential tasks:
- Monitors DEF fluid level
- to inform the engine control system when DEF is low
- Measures fluid temperature
- to help prevent freezing and ensure proper DEF dosing
- Filters the fluid
- before it moves through the DEF system, protecting sensitive components
- Manages fluid suction and return
- between the DEF tank and the dosing module
A properly functioning DEF head unit ensures reliable emissions control, minimizes downtime, and prevents costly system failures. It supports the operation of the SCR (Selective Catalytic Reduction) system and helps your equipment remain compliant with environmental standards. Replacing a failing DEF head unit with a quality OEM option like the SP229515 is essential to long-term engine health and efficient performance in construction applications.
The Diesel Exhaust Fluid (DEF) head unit is a key part of the emissions system in modern diesel vehicles. It monitors and controls DEF levels, temperature, and quality. While designed for long-term operation, DEF head units don’t last forever and may eventually fail due to environmental or mechanical factors.
Typical Lifespan of a DEF Head Unit
Under normal conditions, a DEF head unit can last 100,000 to 150,000 miles, or approximately 5 to 7 years. However, its lifespan can vary based on:
- Exposure to extreme temperatures
- Both heat and freezing conditions can damage sensors.
- Contaminated DEF fluid
- Using poor-quality or expired fluid can corrode internal components.
- Extended idle times
- Long periods of inactivity may lead to crystallization inside the unit.
- Electrical faults
- Power surges or wiring issues may cause malfunction.
What to Expect as It Ages
A failing DEF head unit may cause inaccurate level readings, dashboard warnings, or even trigger derate modes. Routine inspections, using clean DEF, and protecting the tank from extreme conditions can help extend its life.
Yes, it is engineered to help the DEF system meet strict emissions standards.
It is built to withstand the harsh operating conditions of construction machinery.
It tracks DEF fluid conditions to ensure the emissions system functions correctly.
Signs include warning lights, inaccurate DEF levels, or engine derates.
Cummins DEF Head Units
