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The Independent Automotive Aftermarket Federation

DENSO introduces thermostats into its extensive aftermarket portfolio

Date: Thursday 07 March 2024

Thermostats control the operating temperature of the engine, and in some instances the gearbox, by regulating the flow of coolant to the radiator, as well as other specific areas within the cooling system. They are designed to ensure the engine temperature remains within a specified operational window, regardless of the outside temperature, whether in the arctic or the tropics.

Typically, there are four thermostat types that are now in common use and these start with the familiar conventional type that has a flange and can come with or without a bypass valve, the insert thermostat that has no flange and where the housing supports the central pin, the housing type which is an integrated solution that combines the thermostat and its housing into a single component and MAP controlled thermostats, which can be triggered by an electrically controlled, combined heating element that can be activated on demand.

Naturally, these thermostat types are not interchangeable and even those of the same design may differ in both their dimensions and the temperature that they activate, so to maintain the engine temperature within the correct parameters to allow it to operate to its optimum performance, as well as minimising its internal wear, requires the vehicle to be fitted with the correct thermostat.

Manufactured to strict OE specifications, the DENSO thermostat range encompasses all types and consists of 336 part numbers that will be launched in two close stages, which cater for 80% of the European car parc and therefore provides independent workshops with a reliable and dependable replacement solution.

In common with all of the products in its comprehensive aftermarket programme, the DENSO thermostat range is support by an online catalogue that makes identifying the correct replacement quick and easy. This can be accessed via the DENSO Aftermarket website, where additional information is also available in the download area.

In addition, reflecting DENSO’s commitment to achieve environmental sustainability and a carbon neutral future, DENSO thermostats are the first products in the company’s thermal management programme, to be supplied in eco-friendly packaging, which contributes to one of its goals for the future: to ‘Bring hope for the future for our planet, society and all people’.

This goal demonstrates the multi-faceted approach DENSO has established to achieve sustainable mobility and includes: Manufacturing, Mobility Products, Energy Use, Peace of Mind, and Clean, which allows the company to address the environmental performance of its facilities and the contribution to reduce CO2 that the products it makes has, as well as in making life and travel safer and the world purer.

By supplying its thermostats in biodegradable cardboard packaging, DENSO is reducing its impact on the environment because whereas traditional packaging materials, such as plastic, can take hundreds or even thousands of years to decompose, this biodegradable material breaks down more quickly into natural substances, reducing the long-term environmental impact of waste packaging.

Further details of the DENSO Aftermarket programme are available online at: