Audi A6 C7 A8 4H 3.0 TDI Diesel Engine SCR Adblue Injector 4H0131113E

AdBlue SCR injector for 3.0 TDI Audi A6 C7 / A8 4H engine is an exhaust gas aftertreatment system component designed for diesel engines with a selective catalytic reduction system. It is responsible for precise dosing of the AdBlue solution into the exhaust stream, which helps maintain compliance with emission standards and stable diesel engine operation.

Specifications and technical data

• SKU: 4H0131113E
• Mark: Audi
• Condition: Used
• OEM Part Number: 4H0131113E
• Substitutable numbers: 4H0131113E, 4H0 131 113 E, 0444025055, 0 444 025 055
• Fuel type: Diesel
• Category: Fuel Injectors

Purpose and Function in the SCR System

The offered AdBlue injector nozzle for Audi operates within the SCR system, where a urea solution is injected into hot exhaust gases to reduce nitrogen oxides. A properly functioning injector ensures:

• stable AdBlue dosing under various engine load conditions,
• maintaining SCR catalyst efficiency and reducing NOx emissions,
• proper diesel engine operation without entering limp mode,
• no exhaust aftertreatment system errors in the engine control unit.

The component is dedicated to diesel engines, so its operating characteristics are tailored to the specifics of Diesel engines.

Benefits of Using an Original Injector Nozzle

For SCR systems, maintaining the correct spray pattern geometry and resistance to crystalline urea deposits is crucial. Using an original Audi injector nozzle allows for:

• maintaining factory emission parameters without the need for software modifications,
• proper cooperation with NOx sensors and the engine control unit,
• reducing the risk of exhaust system clogging due to improperly atomized AdBlue solution,
• limiting AdBlue consumption through accurate dosing.

This solution is particularly important for vehicles used for long distances, where the SCR system operates across a wide range of temperatures and loads.

Component Condition and Installation Aspects

The product is categorized under injector nozzles and is offered as a used part, allowing for economical SCR system repair while maintaining original construction. Before installation, it is recommended to:

• verify the tightness of the AdBlue supply lines,
• check the condition of the mounting seat in the exhaust system,
• confirm the correct operation of NOx sensors after replacing the component.

A correctly installed injector nozzle enables the restoration of full exhaust aftertreatment system functionality without interfering with other components.

AdBlue Injection System Diagnostics and Operation

Symptoms of wear or malfunction of the AdBlue injector may include SCR system fault messages, increased solution consumption, and a decrease in engine power. To better understand the issues of injection in diesel engines, it is worth reading the article Diesel Injector Failures – How to Recognize Them and What Their Neglect Entails, which discusses typical symptoms and diagnostic methods.

When selecting used parts for the injection and exhaust aftertreatment system, the guide Car Parts – New or Used? Comparing Costs, Quality, and Durability, which describes the practical differences between new and used components, may also be helpful.

Related Audi Injector Nozzles

If you are looking for other Audi injector nozzles to expand or service the injection and SCR system in your car, check out the Audi injector nozzles available in our assortment to select the element best suited to your specific engine version.