Heat Resistant Exhaust Wrap: Everything You Need to Know 

Date: 10/10/25

Internal combustion engine exhausts may be designed to work at very hot temperatures, but not all heat is good heat. In some circumstances, heat radiating from your exhaust pipes can compromise engine efficiency, lower the environmental performance of your catalytic converter and even reduce the life of some key engine components like wires and pipes.

Heat resistant exhaust wrap from Sleeve It provides an effective and affordable way to boost engine performance, reduce emissions and protect both you and your engine. But what exactly is heat resistant exhaust wrap, what are the benefits and how can you use it to improve your engine?

What is Heat Resistant Exhaust Wrap?

Sleeve It heat resistant exhaust wrap is an insulated sleeve, knitted from basalt fibre yarn, that slides along the length of your exhaust and header pipes. It has excellent thermal properties and is designed to keep the heat inside your exhaust system and out of your engine bay and car interior.

Top 5 Benefits of Sleeve It Heat Resistant Exhaust Wrap

Fitting heat resistant exhaust wrap brings a number of different benefits, ranging from enhanced engine power and performance to increased safety for repairs and maintenance. The top five benefits of heat resistant exhaust wrap are:

1. Increased engine power – Heat resistant exhaust wrap keeps exhaust gasses hotter. This improves performance by improving gas flow through the engine and encouraging ‘scavenging’ of air from the cylinders. This is especially important in turbocharged cars, and it can reduce turbo-lag significantly. Lower under-bonnet temperatures also mean air entering the engine is not as hot, improving combustion.

2. Reduced emissions – The hotter the air passing through your catalytic converters or diesel particulate filters, the more effective they are at removing pollutants from the exhaust gases. This helps to protect the environment and keep you within statutory limits. 

3. Enhanced engine durability – By reducing their constant exposure to extremes of heat, you can prolong the life of a number of engine components, from rubber hoses and seals to plastic fittings and plugs.

4. Safer working – Heat resistant exhaust wrap makes the engine bay cooler much sooner after engine use. This means that you can attend to repairs, assessment or engine tuning much quicker during tuning, tests or roadside breakdowns.

5. Lower interior temperature – In many models, heat from exhaust pipes can generate heat in the interior of the vehicle, creating unpleasantly hot conditions for drivers and passengers. Heat resistant exhaust wrap helps to insulate the interior from this heat.

Critical Safety Enhancements With Heat-resistant Exhaust Wrap.

While performance enhancements may be welcome, and environmental benefits are something we should all be searching for, the most important feature of heat resistant exhaust wrap has to be safety.

Just like our popular Fire Sleeve range used on manufacturing equipment, heavy industry and transportation, the key feature of heat resistant exhaust wrap is its ability to protect people and equipment by reducing the risk from hot pipework.

No more burning your hand as you reach deep into the engine. No more failure of critical parts that are too close to the exhaust system in a crowded engine bay. And with modern cars increasingly reliant on electronic engine management systems, there’s no more risk to the web of wires beneath your bonnet either.

Wrap-Up Your Performance and Safety Goals

Sleeve It heat resistant exhaust wrap offers continuous thermal protection up to 750°C, more than enough for most engine bays. It can be fitted easily, with a single wall construction designed not to snag on exhaust welds or joints, and it is built to last, resisting moisture, oils, hydraulic fluids, acids and alkalis.

To find out how easily and affordably you can boost engine performance, essential parts and wiring and reduce your environmental impact, download the full heat-resistant exhaust sleeve data sheet today, or contact Sleeve It for more details. 

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