Diesel Heater Exhaust Insulation

A diesel heater exhaust pipe runs hot from the moment the heater lights. In a caravan, a camper or a van fit-out that pipe usually runs within centimetres of cupboards, timber, cabling and upholstery.

These kits insulate the pipe so that heat stays inside it. Each kit holds 4.5 metres of 25mm wrap and four stainless steel ties, which covers the run on most installations.

Without proper insulation, exhaust pipes can radiate intense heat that leads to scorched components, degraded insulation, heat soak in the engine bay, and discomfort inside the vehicle. Kool Wrap exhaust heat wrap is designed to control radiant heat, improve safety, and enhance overall thermal performance.

Manufactured from high-temperature fibreglass and advanced thermal materials, exhaust heat wraps help retain heat within the exhaust system while lowering surface temperatures. Suitable for DIY installations and professional workshops, these wraps are engineered for durability in high-heat environments.

Why Exhaust Heat Wrap Is Essential

During normal operation, exhaust pipes can exceed 500°C, and in performance or turbocharged applications, temperatures can be even higher. When heat is not properly managed, it can lead to:

• Heat damage to wiring, hoses, and surrounding components
• Increased engine bay temperatures and heat soak
• Reduced exhaust gas velocity and performance loss
• Higher risk of burns or fire in confined areas

Exhaust heat wrap helps reduce these risks by insulating the exhaust system, retaining heat inside the pipe, and lowering radiant heat exposure to nearby components.

What Makes Exhaust Heat Wrap Effective

Designed for continuous exposure to extreme temperatures, these exhaust wraps are flexible, durable, and easy to apply across a wide range of exhaust configurations.

Key Benefits

• High Temperature Resistance – Designed to withstand extreme exhaust heat
• Improved Thermal Control – Reduces radiant heat and surface temperatures
• Flexible and Durable – Conforms to straight and curved exhaust sections
• Enhanced Performance – Helps maintain exhaust gas velocity
• Simple Installation – Wrap-and-secure design using stainless steel ties

Suitable Applications

Exhaust heat wrap is suitable for a wide range of automotive and industrial uses, including:

• Automotive exhaust systems and headers
• Turbocharged and performance vehicles
• 4WDs, caravans, and campervans
• Marine exhaust systems
• Motorcycles and motorsport applications

Whether upgrading an existing exhaust or building a new system, heat wrap helps improve safety, performance, and component longevity.

Technical Specifications

• Material: High-temperature fibreglass or advanced thermal composites
• Lengths: Multiple roll sizes available
• Widths: Various widths to suit different exhaust diameters
• Includes: Stainless steel locking ties
• Colours: Natural, black, titanium, and vermiculite-coated options
• Recommended Use: Exhaust pipes, headers, and high-heat components

For extreme temperature environments, titanium and vermiculite-coated exhaust wraps offer enhanced durability and heat resistance.

Additional Heat Protection Options

For complete thermal management, exhaust heat wrap can be combined with:

• Turbo blankets to reduce under-bonnet heat
• Heat shields for sensitive components
• Heat sleeves for hoses and wiring
• Spark plug boot heat protection

What Is in the Kit

4.5 metres of 25mm wrap and four stainless steel ties. On most caravan and camper installations that covers the full run from the heater to the outlet with wrap left over for a second pass at the hottest section.

The wrap is the same material family Kool Wrap supplies as an exhaust insulation sleeve for other applications. It is cut with scissors, wrapped with an overlap and held with the ties.

Where It Goes

Wrap the pipe wherever it passes close to something that should not get hot. In practice that means most of the run.

• The section closest to the heater, which is the hottest.
• Anywhere the pipe passes through or beside a cupboard, a bed base or a wall cavity.
• Anywhere the pipe runs near cabling, hoses or upholstery.
• The section under the floor if it sits near fuel lines or storage.

Leave the outlet itself uncovered, and follow your heater manufacturer’s instructions for routing, clearances and termination. Those instructions take priority over anything on this page.

Before You Buy

Measure the pipe run first, from the heater outlet to the exterior termination, and add a margin for overlap and bends. Long runs and double-wrapped sections need more than one kit.

Our guide to insulating a diesel heater exhaust pipe works through the measuring and the fitting step by step.

One Safety Note

Insulating the exhaust is not a substitute for a correctly sealed installation. A diesel heater burns fuel in a sealed combustion chamber that draws air from outside and vents outside. The combustion side is meant to stay sealed from the living space, and that depends on the exhaust staying sealed too. Check the joints and clamps as part of your servicing, follow the heater manufacturer’s instructions, and fit a carbon monoxide alarm in the living space.

Trusted by Professionals Across Australia

With over two decades of experience in thermal insulation and heat management, Kool Wrap products are widely used by automotive workshops, performance builders, marine engineers, and off-road specialists. Real-world use in demanding environments has shaped products known for reliability and consistent performance.

Buy Exhaust Heat Wrap Online

Protect your exhaust system and surrounding components with properly installed exhaust heat wrap. Kool Wrap exhaust insulation solutions offer long-lasting protection, improved thermal efficiency, and dependable performance across a wide range of applications.

Explore the full range of exhaust heat wrap products and kits available for Australia-wide delivery.

Frequently Asked Questions

1. What does exhaust heat wrap do?

Exhaust heat wrap insulates exhaust pipes to reduce radiant heat, improve safety, and help maintain exhaust gas temperatures.

2. How hot can exhaust heat wrap handle?

Most exhaust heat wraps are designed to withstand very high temperatures, with advanced materials suitable for extreme performance applications.

3. Does exhaust heat wrap improve performance?

By retaining heat within the exhaust, heat wrap can help maintain exhaust gas velocity and reduce heat soak in the engine bay.

4. Is exhaust heat wrap safe to use?

Yes, when installed correctly, exhaust heat wrap improves safety by lowering surface temperatures and protecting nearby components.

5. Can exhaust heat wrap be installed DIY?

Yes. Exhaust heat wrap is designed for straightforward installation using basic tools and stainless steel ties.

6. Is exhaust heat wrap suitable for marine use?

Yes. It is commonly used in marine applications where heat control and space management are critical.

7. How long does exhaust heat wrap last?

With proper installation and normal operating conditions, quality exhaust heat wrap can last for many years.

Kool Wrap has supplied heat protection in Australia since 1995. We ship Australia-wide with tracking sent after dispatch, from our office in Rowville, Victoria. Call 1300 44 33 34 or email sales@koolwrap.com.au.