Audi A6 C7 A7 4G8 Water Radiator Coolant Pipe Hose Tube Line Petrol 4G0121485T

Audi A6 C7 / A7 4G8 Coolant Hose for Gasoline Engines is an original part from the cooling system hoses and pipes group, designed for precise coolant flow in gasoline-powered units. Designed by Audi, it ensures proper coolant circulation between the radiator and other system components, contributing to stable engine operating temperature and safe operating conditions.

Specifications and technical data

• SKU: 4G0819350B
• Mark: Audi
• Condition: Used
• OEM Part Number: 4G0819350B
• Substitutable numbers: 4G0819350B, 4G0 819 350 B, 4G0121485T, 4G0 121 485 T
• Fuel type: Petrol
• Part type: Hose
• Category: Coolant Hoses

Purpose and Function in the Cooling System

This coolant hose has been developed specifically for Audi A6 C7 and Audi A7 4G8 models with gasoline engines. As a component of the system transporting coolant between the radiator and other components, it is responsible for:

• maintaining stable coolant circulation in the gasoline engine,
• dissipating excess heat from the powertrain to the radiator,
• ensuring system integrity under typical thermal and pressure loads.

Thanks to its precise fit to the engine bay geometry, the hose does not interfere with other components and allows for correct coolant flow within the manufacturer's specified path.

Construction, Fitment, and OEM Quality

As an original Audi part, the coolant hose features a construction that adheres to the manufacturer's factory standards. This means:

• precise matching of connection diameters to the radiator spigots and other system components,
• appropriately selected material stiffness and flexibility,
• hose geometry adapted to the engine bay of the Audi A6 C7 and A7 4G8.

This construction minimizes the risk of hose stress, twisting, or kinking, which directly impacts the durability and integrity of the entire cooling system. Original origin also promotes seamless integration with factory clamps and mountings.

Condition, Service Application, and Benefits of Installation

The hose is offered as a used part, making it an attractive cost-effective alternative compared to a new OEM component, while maintaining proper fitment for the specific Audi A6 and A7 generation. It is particularly suitable for situations where:

• the existing hose shows signs of wear, cracks, or leaks,
• a component replacement is necessary after intervention in the cooling system (e.g., radiator replacement),
• you are looking for an original component with factory geometry for a gasoline engine.

Installing a correctly fitted hose restores proper coolant circulation, which is crucial for protecting the engine from overheating and related damage.

Significance for Engine Thermal Safety

A functional coolant hose in a gasoline engine directly impacts the powertrain's lifespan. Maintaining the integrity and proper flow of coolant:

• stabilizes engine operating temperature under various load conditions,
• reduces the risk of overheating during city and highway driving,
• supports the correct operation of the thermostat and radiator.

To better understand how individual cooling system components affect powertrain durability, it is worth reading the article: Engine Cooling System – Overheating, Repair, and Used Radiators. This will allow for a more informed approach to diagnosing and servicing your car.

Selection of Other Audi Cooling System Hoses and Pipes

If you plan to replace other components in the same circuit during servicing, the brand-dedicated category may be helpful. In this case, it is worth checking Audi cooling system hoses and pipes to select compatible components for the remaining sections of your car's cooling system.