Mercedes W164 Thermostat Oil Cooler Housing Diesel A1645010265

The Mercedes W164 Oil Cooler Thermostat Housing Diesel is an original part from the Thermostats and Housings group, designed for the oil cooling system in diesel engines. Developed by the vehicle manufacturer, it ensures proper oil temperature management, which translates to stable engine operation and safe thermal load for components.

Specifications and technical data

• SKU: A1645010265
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1645010265
• Substitutable numbers: A1645010265, A 164 501 02 65
• Fuel type: Diesel
• Category: Thermostats & Housings

Purpose and Function in the Oil Cooling System

The presented oil cooler thermostat with housing operates within the diesel engine's lubrication system, controlling oil flow through the cooler based on operating temperature. A properly functioning component:

• accelerates the achievement of optimal oil temperature after startup,
• stabilizes operating conditions under high engine load,
• reduces the risk of oil overheating and the degradation of its lubricating properties.

This ensures the lubrication system maintains adequate performance, and engine components are better protected against wear under typical operating conditions for a Mercedes W164 vehicle with a diesel engine.

Construction, Fitment, and Performance Parameters

The thermostat housing is designed as a structurally integrated part for the oil cooling system in the specific model, facilitating installation in place of the factory component. Using the correct thermostat integrated with the housing allows for maintaining:

• oil flow geometry consistent with the manufacturer's design,
• proper connections with hoses and the oil cooler,
• stable mounting points to the block or filter module.

The component is intended for vehicles powered by a diesel engine, which is significant due to the thermal characteristics and loads typical for these power units.

Condition, Verification, and Benefits of Use

The offered oil cooler thermostat with housing is a used part, allowing for an economical replacement while maintaining the original manufacturer's specifications. Choosing an original component from this group ensures:

• maintenance of the oil cooling system's factory operating parameters,
• consistency with other components of the lubrication system,
• reduced risk of fitment issues during installation.

For workshops and users seeking parts compliant with manufacturer documentation, it is important that the product has a dedicated OEM number and interchangeable numbers, which facilitates precise identification based on catalog data.

Application in Service and Engine Performance Optimization

Replacement of the oil cooler thermostat with housing is recommended in cases of oil temperature issues, uneven lubrication system operation, or upon detection of housing leaks. A correctly selected component:

• stabilizes oil temperature across a wide range of loads,
• supports uniform lubrication of engine components,
• can reduce the risk of costly repairs resulting from oil overheating.

For vehicles operated in urban and highway conditions, maintaining a functional oil cooler thermostat has a direct impact on the powertrain's durability and predictable performance over the long term.

Part Selection and Additional Information

To correctly select the Mercedes W164 Oil Cooler Thermostat Housing Diesel for a specific vehicle version, it is advisable to use the OEM part number or interchangeable numbers, along with vehicle data. If in doubt, verification by VIN or consultation with a Mercedes specialist service is recommended.

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other components from the same group, such as thermostat housings, thermostat inserts, or modules connected to the cooling system, check the available parts in the Mercedes Thermostats and Housings category.

For users who want to consciously and safely purchase used components online, a practical guide describing part selection by OEM numbers and a strategy for verifying offers may be helpful – you can find it in the article Safe Online Purchase of Used Car Parts – A Step-by-Step Guide.