E-Cat Contact Us
Serck Automotive Engine Cooling

Thermostats

Engineered to Master Thermal Control

Serck thermostats are engineered to provide accurate and stable temperature control across modern engine cooling systems. The range includes both conventional wax-element thermostats and advanced integrated thermostat housings incorporating sensors and electronic control functions, all developed to replicate OE thermal management strategies.

Where applicable, units are supplied as complete assemblies to ensure correct installation, reduce workshop time and eliminate potential sealing issues. Manufactured to rigorous OE standards, Serck thermostats deliver precise operation, system reliability and long-term cooling system performance.

Car Thermostat EH2010

StockASSIST: Our Most Popular Thermostats for the UK Aftermarket

Thermostats are a year-round seller — from cold-start concerns in winter to overheating in summer. With both traditional and housing-integrated options, StockASSIST helps you stock what sells, based on vehicle parc and sales history.
Here are 10 of the most in-demand thermostat applications in our UK range:

Car Thermostat EH2001

EH2001

Serck Thermostat
Car Thermostat EH2008

EH2008

Serck Thermostat
Car Thermostat EH2002

EH2002

Serck Thermostat
Car Thermostat EH2161

EH2161

Serck Thermostat
Car Thermostat EH2005

EH2005

Serck Thermostat
Car Thermostat EH2024

EH2024

Serck Thermostat
Car Thermostat EH2010

EH2010

Serck Thermostat
Car Thermostat EH2035

EH2035

Serck Thermostat
EH2015 Thermostat

EH2015

Serck Thermostat
Car Thermostat EH2145

EH2145

Serck Thermostat

TechASSIST: Product Support and Information

The thermostat is a vital part of the engine’s cooling system. It: • Controls coolant flow between the engine and radiator • Helps the engine warm up quickly to optimal operating temperature • Maintains consistent engine temperature, improving performance and fuel economy • Supports emission control systems, which rely on stable temperatures • Protects the engine from overheating or running too cold Whether a basic insert or a complex housing-integrated thermostat, a reliable unit is critical for both engine health and driver confidence.

Why Do They Fail?

Thermostats are subject to constant thermal cycling and can fail over time due to:

  • Sticking open, often due to internal wear, spring fatigue, or debris

  • Sticking closed, risking overheating and head gasket failure

  • Housing cracks or seal failure, especially on plastic-bodied types

  • Sensor failure, in electronically controlled units

  • Coolant contamination, leading to corrosion or scale build-up

  • Improper installation, such as airlocks or over-tightening housing bolts

Symptoms of a Failing Thermostat

  • Engine overheating, especially on long drives or in traffic

  • Poor cabin heating, caused by the thermostat stuck open

  • Slow warm-up, leading to poor fuel economy and increased emissions

  • Erratic temperature gauge, fluctuating or stuck in one position

  • Check Engine Light (MIL), particularly on electronically controlled types

  • Coolant leaks, often near the housing or pipe connections

Fitting Tips

  1. Always replace the gasket or housing seal — never reuse the old one

  2. Flush the cooling system before installation to remove contaminants

  3. Ensure proper bleeding after refilling coolant — airlocks can cause false overheating

  4. Use correct torque settings when fitting housings, especially plastic types

  5. Check compatibility — some vehicles require temperature-controlled valves with integrated sensors or heaters

WhatsApp For Technical Support – Start a WhatsApp Chat with our TechASSIST Experts