Audi SQ5 8R A7 4G 3.0 TDI CGQB Diesel Engine Injector Nozzle 059130277CK

Visual condition of the part

The product shows signs of use visible in the photos.

Audi SQ5 8R A7 4G 3.0 TDI CGQB Diesel Engine Injector Nozzle is an original fuel system component designed for Audi diesel engines. It precisely doses fuel into the combustion chamber, which translates into stable engine operation, proper performance, and predictable power delivery. By maintaining factory parameters, this injector helps preserve the correct operating characteristics of the 3.0 TDI engine.

Specifications and technical data

• SKU: 059130277CK-1
• Mark: Audi
• Condition: Used
• OEM Part Number: 059130277CK
• Substitutable numbers: 059130277CK, 059 130 277 CK
• Fuel type: Diesel
• Category: Fuel Injectors

Purpose and function in the fuel system

The presented injector is a component of the Diesel injection system, responsible for the precise atomization of fuel under high pressure. In 3.0 TDI CGQB engines, the use of the correct fuel injector is crucial for:

• maintaining the appropriate fuel pressure and dosage in every operating cycle,
• proper mixture formation in the combustion chamber,
• reducing smoke and excessive exhaust emissions,
• maintaining smooth operation at idle and under load.

Selecting an injector that complies with factory specifications is particularly important in higher-power units, such as the SQ5 and A7 3.0 TDI versions, where the fuel system operates under demanding conditions.

Technical category: Audi injector nozzles

The item belongs to the Injector Nozzles category, which are precision components responsible for shaping the fuel spray. In Audi vehicles, properly functioning injector nozzles influence:

• even operation of all cylinders,
• reduction of engine vibration and noise,
• stable acceleration without jerking,
• maintaining factory fuel consumption under typical operating conditions.

Replacing a worn injector with a functional unit from the same design group allows for the restoration of correct injection system parameters without the need to interfere with other components.

Benefits of using an original injector

Using an original fuel injector in a 3.0 TDI engine brings measurable operational benefits. The most important include:

• maintaining the factory fuel dosage characteristics, which facilitates engine diagnostics and tuning,
• better compatibility with the factory engine control unit and injection maps,
• reduced risk of uneven operation, difficult starts, or excessive smoke,
• the possibility of continued, predictable engine operation without undesirable parameter deviations.

In the case of Audi diesel units, using the correct injector is one of the key steps in resolving issues with power loss, knocking, or excessive fuel consumption.

Condition of the item and installation recommendations

The offered injector is a used original part, meaning it has been removed from a vehicle and retains the factory design intended by the manufacturer. Before installation, a standard workshop procedure is recommended, including checking the fuel system for leaks, verifying operating parameters on a diagnostic bench, and using new seals in accordance with the manufacturer's technology.

Professional installation of the injector in a 3.0 TDI engine should be performed using appropriate tools and following the correct tightening procedure to ensure proper seating in the cylinder head and connection tightness.

Diagnostics and technical knowledge

Before deciding to replace an injector, it is worth performing a thorough diagnosis of the fuel system. Symptoms such as uneven operation when cold, power loss, increased smoke, or characteristic knocking may indicate wear or damage to the injector nozzles. To better understand the symptoms and possible consequences of neglect, it is worth checking out our guide: diesel injector faults – symptoms, effects, and diagnostics.

If you are planning a comprehensive repair or upgrade of the injection system area in your Audi and need other elements from the same group, such as additional injectors, nozzles, or related fuel components, check out the available parts in the Audi injector nozzles category.