Mercedes-Benz A B W169 W245 200 Turbo Water Heating Return Hose Pipe A1698304796

The Mercedes-Benz A/B W169 W245 Turbo Water Heating Return Hose is an original cooling system component designed for gasoline engines. Specifically engineered for A-Class and B-Class models, it ensures stable coolant flow in the turbocharging area, supporting a safe operating temperature for the power unit and long-term efficiency of the auxiliary equipment. Thanks to its factory-specified geometry and connection diameters, the hose perfectly integrates into the engine bay architecture, facilitating service and subsequent inspections.

Specifications and technical data

• SKU: A1698304796
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1698304796
• Substitutable numbers: A1698304796, A 169 830 47 96, KZ
• Fuel type: Petrol
• Category: Coolant Hoses

Function in the Gasoline Engine Cooling System

This hose belongs to the Cooling System Hoses and Pipes group and is responsible for returning heated coolant from the turbocharger area to other parts of the system. A properly functioning return hose:

• stabilizes the temperature in the turbocharging zone,
• limits the risk of oil and rotor component overheating,
• supports even heat distribution throughout the cooling system,
• ensures the circuit's seal under variable pressure.

In gasoline engines, especially turbocharged versions, an efficient return hose directly impacts the turbine's durability and performance stability during dynamic driving.

Dedicated to Mercedes-Benz A/B W169 W245

The hose has been developed with the engine bay architecture of Mercedes-Benz A-Class and B-Class W169/W245 generation models in mind. This means:

• factory fit for mounting points and routing along original hose paths,
• compatibility with the cooling system of gasoline engines used in these models,
• adherence to the manufacturer's original concept for turbocharger cooling.

This allows for installation without modifications, and the cooling system will maintain the parameters intended by Mercedes-Benz engineers.

Characteristics of a Used Part

The offered hose is a used part, enabling an economical repair while maintaining the original manufacturer's specifications. In practice, this means:

• retention of factory geometry and connection diameters,
• compatibility with standard cooling system clamps and connectors,
• suitability as a replacement for a worn or leaking hose.

Choosing an original, used part is often a beneficial solution for drivers who want to maintain component consistency in their Mercedes while controlling service costs.

Importance for Cooling System Durability

A functional turbo water heating return hose is crucial for protecting the turbocharger and the entire engine from the effects of overheating. Replacing a worn or brittle hose with an original part allows you to:

• reduce the risk of coolant leaks in high-temperature areas,
• maintain stable pressure in the cooling circuit,
• prevent secondary damage, such as cylinder head overheating or a drop in turbocharger performance.

For drivers who use their cars in urban traffic and on highways, such a component is an important link in ensuring consistent engine operating parameters under various load conditions.

Technical Support and Parts Selection

If you want to better understand how operating temperature affects the entire cooling system and why the condition of hoses and pipes is important for engine longevity, check out the guide Summer Heat vs. Cooling System: Used Radiators and Fans Guarantee Savings. This is a practical addition to your knowledge when planning service work on your Mercedes.

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other parts from the same group, such as coolant hoses, pipes, or connectors, check the available parts in the Mercedes Cooling System Hoses and Pipes category.