Precision Engineered to Champion the Independent Aftermarket

The VXPRO range of thermostats includes everything from traditional wax-element units to modern integrated thermostat housings with sensors and control modules. Engineered to match OE function and fit, our thermostats help regulate engine temperature for maximum performance, longevity, and emissions compliance.

Many references are supplied pre-assembled with thermostat housings, saving time in the workshop and ensuring leak-free installation. Every unit is manufactured to stringent quality standards, backed by a 5-year warranty, and supported by our TechASSIST and StockASSIST services — giving independents the tools and confidence to compete with the dealer network.

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

VXPRO Thermostat

Car Thermostat EH2008

EH2008

VXPRO Thermostat

Car Thermostat EH2002

EH2002

VXPRO Thermostat

Car Thermostat EH2161

EH2161

VXPRO Thermostat

Car Thermostat EH2005

EH2005

VXPRO Thermostat

Car Thermostat EH2024

EH2024

VXPRO Thermostat

Car Thermostat EH2010

EH2010

VXPRO Thermostat

Car Thermostat EH2035

EH2035

VXPRO Thermostat

EH2015 Thermostat

EH2015

VXPRO Thermostat

Car Thermostat EH2145

EH2145

VXPRO 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