High-quality components
built to deliver


Our range of products also includes specialist thermal management components which we manufacture and are used for our complete system assemblies.

We also provide these specialist products to a number of OEM and Aftermarket partners across the globe. 


Close up shot of aluminium brazing carried out by Grayson Thermal Systems

Aluminum Brazed Products

Achieve maximum thermal management performance and efficiency for your powertrain and HVAC systems with our durable aluminium products.

Through our investment in our design and manufacturing system of aluminium brazed heat exchangers, we can partner with you to deliver bespoke aluminium solutions to solve problems at vehicle design or in-field operation.

Our large range of heat exchanger core platforms are suitable for a variety of applications, from double deck buses to off-highway applications.

In particular, our advanced tube and fin technology provides high heat transfer performance across a range of temperatures and flow rates. The heat exchanger platform selection is based on your operating and environmental conditions.

We offer lightweight coolant, air, fuel and oil heat exchangers capable of delivered desired performance in the most extreme operational conditions.

Our range of aluminium brazed products include:

Water Radiators
Charge Air Coolers
Heater Coils
Oil Coolers

Tube/Shell Coolers

For over two decades, we have been designing and manufacturing trusted shell and tube heat exchangers to the highest specifications.

Our shell and tube heat exchangers benefit from a flexible and versatile design, allowing them to be suitable for a range of applications both on and off-highway.

In addition to our extensive standard range, our committed engineering team can work with you to create custom units to specific requirements.

All GTS shell and tube heat exchangers have been carefully designed, specialising in optimum fluid cooling, with copper brass inner tube stacks perfect for thermal conduction assembled into a highly durable cast aluminium shell.

Both single and two flow versions of our shell and tube heat exchangers are available.

Close up shot of Grayson Thermal Systems employee reviewing tube heat exchanger
Close up shot of Grayson Thermal Systems employee working on reservoir tank

Water/Reservior Tanks

All cooling systems have a requirement for a reservoir / water tank and we offer these products as part of our total thermal management solution.

We have a range of standard products which benefit from series production volumes but we also offer bespoke designed reservoir tanks for the specialised applications.

With more than 30 years’ experience of reservoir tank design and manufacture, we know that vehicle operators cannot afford long periods of vehicle downtime. It is why leading OEMs across the world trust Grayson-manufactured tanks to provide the reliability needed.

Our reservoir tanks can be designed into your cooling system loop for electric motors, power electronics, hydrogen fuel cells, battery thermal management, internal combustion engines and more.

Reservoir Tanks - Aftermarket Solutions

For aftermarket applications, we carry stocks of a wide range of replacement fuel tanks for ADL, MAN, Optare, Scania, VDL and Volvo vehicles, plus many more. We also offer next day delivery for all stock products across the UK.

In addition to our aftermarket fuel tank offering, we offer a repair service for leaking tanks and a supply-and-fit service on-site at your depot location.

Processed through our UK manufacturing facilities, we can laser cut, fabricate, fold, machine, weld and powder coat parts in-house, giving you peace-of-mind that your product has been designed, manufactured and finished to our high standards.

Our reservoir tank product range includes:

Diesel Fuel Tanks
Coolant Header Tanks
Hydraulic Reservoir Tanks

Close up of aftermarket stock at Grayson Thermal Systems' stores

Learn more about us


We work with you to provide thermal management solutions that meet your needs, no matter what the application. Discover our product ranges today.


Looking for more information? From product brochures to detailed technical specifications, all our literature is easily and freely accessible at our Downloads Centre.


From innovative electric-powered and hydrogen-powered buses to retrofit solutions for off-highway applications, we have the experience and expertise to meet the needs of your application.