Exhaust wrap heat shield is a type of heat-resistant material that is used to cover the exhaust system of a vehicle. It is typically made from materials such as fiberglass, ceramic, or basalt, and is designed to withstand high temperatures and protect other components from heat damage. 

The wrap is typically applied to the exhaust pipes, headers, and other components of the exhaust system, and is secured in place using metal ties or clamps. 

By reducing the amount of heat that is transferred to other components of the vehicle, exhaust wrap can help to improve engine performance, reduce the risk of damage to other components, and improve the overall temperature management of the vehicle.