What is the Pre-Heat Hose Exhaust？

This is the long aluminum hose that runs off the exhaust manifold.
Completely flexible and easily bent, yet retains shape after forming
Resists heat, cold, oil and water
Cuts with knife for easy installation
Install with or without clamps
Temperature rating: -40°C to +204°C
Packaging: Individually packed
Length: 50 to 5000 mm

Pre-heat hose is made by different materials, aluminum, fibreglass, kraft paper, pvc film, etc.

Pure aluminum Emission Control Duct Hose
Aluminum fiberglass Emission Control Duct Hose
Kraft paper with aluminum Emission Control Duct Hose
Black PVC with kraft paper aluminum Emission Control Duct Hose

We tested our aluminum fiberglass Pre-Heat Hose Exhaust, and it shows the hose can be resistant 204 °C for long time, MAX 600 °C for shot time.