Renault Trafic III Opel Vivaro B 1.6 DCi Thermostat Coolant Housing 210474640R

Renault Trafic III Opel Vivaro B 1.6 DCi Thermostat Coolant Housing is a component from the Thermostats and housings category, designed for the cooling system of a diesel engine. It ensures stable coolant flow and proper integration with the thermostat, which translates into safe operating conditions for the power unit.

Specifications and technical data

• SKU: 210474640R
• Mark: Renault
• Condition: Used
• OEM Part Number: 210474640R
• Substitutable numbers: 210474640R
• Fuel type: Diesel
• Category: Thermostats & Housings

Purpose and function in the cooling system

The thermostat housing in a diesel engine is responsible for the precise seating of the component that regulates the engine's operating temperature and for the leak-proof routing of the coolant. For the Renault Trafic III 1.6 DCi model, a correctly selected housing is crucial for:

• maintaining the optimal operating temperature of the diesel engine,
• stable cooling system performance under load,
• reducing the risk of engine overheating or undercooling.

Thanks to its proper geometry and fitment for the specific engine version, the housing works in conjunction with cooling channels, connectors, and hoses, ensuring an even flow of coolant.

Technical characteristics and fitment

The presented thermostat housing is a component dedicated to the cooling system of a compression-ignition engine, which means it meets the requirements of diesel units in terms of resistance to temperature and operating pressure. The design was developed with the following in mind:

• proper positioning of the thermostat relative to the cooling channels,
• ensuring leak-proof connections with coolant hoses,
• maintaining stable operation under typical operating conditions for a commercial vehicle.

Proper fitment to the specific configuration of the Renault Trafic III reduces the need for installation modifications and allows for the preservation of the factory coolant circulation logic.

Benefits of using the original thermostat housing

Using a thermostat housing designed for a Renault diesel engine allows for maintaining cooling system performance parameters in accordance with the manufacturer's specifications. In practice, this means:

• more predictable engine warm-up after startup,
• stable operating temperature during city and highway driving,
• reduced risk of leaks in the thermostat area.

For workshops and fleet users, the possibility of easier diagnostics is also important – using the correct housing eliminates variables resulting from mismatched replacements, which facilitates the assessment of the cooling system's operation. This, in turn, promotes trouble-free vehicle operation in the long term.

Component condition and application in service practice

The thermostat housing in this variant is intended for re-installation in a vehicle, making it an attractive solution for services looking for parts with a favorable cost-to-functionality ratio. Replacing the housing is particularly recommended in situations where:

• coolant leaks have been detected in the thermostat area,
• mechanical damage to the connectors or mounts has occurred,
• comprehensive cooling system maintenance is required along with a thermostat replacement.

A well-chosen housing allows for restoring proper coolant circulation and reducing the risk of secondary failures related to engine overheating.

Related products and technical knowledge

If you are planning a comprehensive repair or upgrade of the engine area in your Renault and need other elements from the same group, such as thermostat bodies, covers, or connection pipes, check out the available parts in the Renault Thermostats and housings category.

To better understand why choosing the right components – including used cooling system parts – matters in the context of the current market situation, it is worth reading the article: Crisis in the new parts market? Why used originals for premium cars are the hottest trend in 2026.