Land Rover Discovery 4 L319 3.0 Diesel AdBlue Injector Nozzle GH22-189E3-AA

Land Rover Discovery 4 L319 3.0 Diesel AdBlue Injector Nozzle is a specialized component of the exhaust gas treatment system, designed for diesel engines in the Discovery 4 model. It is responsible for the precise injection of AdBlue solution into the exhaust stream, which supports the maintenance of stable emission parameters and the proper operation of the SCR system. As such, it is a key component for the efficiency of the 3.0 Diesel unit and compliance with environmental requirements.

Specifications and technical data

• SKU: GH22-189E3-AA
• Mark: Land Rover
• Condition: Used
• OEM Part Number: GH22-189E3-AA
• Substitutable numbers: LR071393, LR134712, GH22-189E3-AA, GH22189E3AA, GH22189E3AB, GH22-189E3-AB
• Fuel type: Diesel
• Part type: Fuel Injector Nozzle
• Category: Additional Fuel Injection Parts

Purpose and function of the AdBlue injector

The presented injector is dedicated to the AdBlue supply system in the Land Rover Discovery 4 L319 with a 3.0 Diesel engine. Its task is to spray the appropriate dose of the agent into the exhaust stream so that the selective catalytic reduction system can effectively reduce nitrogen oxide emissions. A properly functioning component of this type supports stable engine operation, reduces the risk of entering limp mode, and helps maintain the correct operating parameters of the exhaust system.

Benefits of using an original Land Rover component

Using an AdBlue injector from the Other injection system parts group dedicated to Land Rover allows you to maintain factory fitment for the Discovery 4 installation. The original geometry and operating characteristics translate into:

• correct dosing of the AdBlue solution across the full range of engine loads,
• stable cooperation with the factory engine control unit and SCR system,
• reduced risk of diagnostic errors related to improper agent injection,
• maintenance of predictable combustion parameters and operation of the 3.0 Diesel unit.

As a result, the injector is a safe service solution for users who want to restore the proper operation of the exhaust gas treatment system without experimenting with replacements of uncertain parameters.

Technical characteristics and system integration

The AdBlue injector works with a diesel engine, where precise control of the amount of reducing agent supplied is crucial. This component is integrated with the exhaust system and electronically controlled by the engine control unit, which allows for dynamic adjustment of the dose to the current load and exhaust gas temperature. The appropriate spray design promotes even mixing of AdBlue with exhaust gases, which improves the efficiency of the reaction in the SCR catalyst.

As a part from the Other injection system parts group, this injector works with other elements of the fuel supply and exhaust treatment system, creating a coherent system designed for the specifics of the Land Rover Discovery 4 L319 3.0 Diesel.

Condition, service application, and part selection

The offered AdBlue injector is a used part, which makes it an attractive cost-effective solution while maintaining the manufacturer's original specifications. This type of part will be particularly useful in situations where:

• errors related to the AdBlue or SCR system appear,
• the engine enters limited power mode due to incorrect agent dosing,
• it is necessary to replace a damaged injector without interfering with other system components.

Before installation, it is recommended to verify compatibility with the specific equipment version of the Discovery 4 and to check the electrical installation and AdBlue supply lines to ensure full functionality after replacement. Proper component selection helps reduce vehicle downtime and restore the correct operation of the exhaust gas treatment system.

Expanding Land Rover injection system service

If you are planning a comprehensive repair or upgrade of the engine area in your Land Rover and need other elements from the same group, such as additional injectors, supply lines, or control elements, check the available parts in the Other Land Rover injection system parts category.

When planning broader service work, it is also worth paying attention to the economic aspect of vehicle operation. Practical tips on optimizing repair costs, which you will find in the article Economical operation of a Ford – where to look for the greatest savings in mechanical and body repairs, containing universal advice also useful for users of other brands, may be helpful.

If you want to shorten the time your car spends in the workshop and have efficient access to a wide range of components, it is worth reading the material No more weeks of waiting – how a wide assortment in one warehouse really shortens your car's downtime at the mechanic?, which shows how properly selected used parts can speed up repairs.