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 4310-18-9 ( OEM Part Number SP222118 ). 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, 18"
OEM NUMBERS
| Primary OEM | SP222118 |
| Additional OEM | SP161164, SP222118 |
ADDITIONAL DETAILS
| CONDITION | Remanufactured |
| UPC / Barcode | 00840490540415 |
| 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.
Built for reliability, the Liugong Construction Machinery Cummins ISB 6.7L DEF Head Unit OEM SP222118 ensures accurate Diesel Exhaust Fluid system operation in Cummins-powered Liugong equipment. This genuine OEM component is manufactured to precise factory specifications, providing proper fitment, dependable performance, and consistent DEF flow in demanding construction environments. By supporting emissions compliance and efficient engine performance, it helps equipment operate smoothly and within environmental standards. Its rugged construction is engineered to withstand the harsh conditions of heavy-duty job sites, offering long-lasting durability and reliability. For operators and fleet managers, this DEF head unit delivers OEM-certified quality and proven dependability to keep machinery performing efficiently.
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The Liugong Construction Machinery Cummins ISB 6.7L DEF Head Unit OEM SP222118 plays an essential role in managing Diesel Exhaust Fluid (DEF) for the machine’s emission control system. Mounted directly on the DEF tank, it ensures accurate monitoring, proper fluid flow, and protection of the Selective Catalytic Reduction (SCR) system.
Main Functions
- DEF Level Monitoring
- Detects the amount of DEF remaining in the tank and sends this information to the engine control module (ECM) to alert the operator when refilling is needed.
- Temperature Detection
- Measures the temperature of the DEF fluid to prevent freezing or overheating that can affect its quality and dosing accuracy.
- Fluid Routing
- Acts as a header by directing DEF through a pickup port to the dosing system and returning unused fluid through a return line to maintain pressure balance.
- Filtration and Protection
- Includes an internal filter that removes impurities, crystals, and particles before the fluid reaches sensitive injection components.
- System Communication
- Transmits sensor data to the ECM for real-time adjustments in DEF dosing, ensuring the system operates efficiently and remains emission compliant.
The DEF Head Unit OEM SP222118 is the heart of the DEF tank system. By combining monitoring, filtration, and communication functions, it keeps the SCR system efficient, protects engine components, and ensures compliance with environmental standards.
The DEF (Diesel Exhaust Fluid) Head Unit is an essential part of your vehicle’s emissions system. It measures DEF level, temperature, and quality — helping your truck stay compliant and efficient. Like any component exposed to harsh conditions, the DEF Head Unit has a limited lifespan that depends on maintenance, environment, and usage.
Average Lifespan of a DEF Head Unit
Most DEF Head Units last 5 to 7 years under normal operating conditions. In well-maintained systems, they can last even longer. However, environmental factors, fluid quality, and handling practices play a major role in determining longevity.
Factors That Affect Lifespan:
- DEF Fluid Quality:
- Contaminated or expired DEF can corrode or damage sensors.
- Storage Conditions:
- Heat or freezing temperatures cause crystallization and sensor failure.
- Handling Practices:
- Dirty or unsealed containers introduce debris into the DEF tank.
- Operating Environment:
- Heavy-duty use and exposure to vibration or extreme weather shorten lifespan.
- Maintenance Habits:
- Regular inspections and clean fluid extend service life.
How to Extend DEF Head Unit Life
You can maximize your DEF Head Unit’s lifespan by following a few best practices:
- Always use certified, uncontaminated DEF fluid.
- Store DEF in sealed, temperature-controlled containers.
- Inspect the DEF system regularly for buildup, leaks, or corrosion.
- Avoid exposing the tank to direct sunlight or freezing conditions.
A DEF Head Unit typically lasts 5 to 7 years, depending on operating conditions and maintenance. By using clean DEF, proper storage, and regular inspections, you can help ensure long-lasting reliability — keeping your truck compliant and on the road.
Contaminated DEF fluid, electrical corrosion, or exposure to extreme temperatures can lead to failure.
Yes, freezing can damage internal sensors or connectors if the DEF system is not properly heated.
Always use clean DEF fluid and keep the tank and connectors free from contamination.
The system may set fault codes and trigger derate until communication is restored.
Cummins DEF Head Units
