What Is a Heat Shield in a Car?

Heat shields are barriers that cars have to stop the heat from the engine from transferring into the car. They are usually found under your car's hood, attached to something warm like an engine.

Heat shields are installed for several reasons: they block off heat coming from hot objects within your vehicle - in this case, near an exhaust manifold or catalytic converter they keep leaves and road grime away from sensitive spots under your hood, protect the paint on your car from burning and discoloration.

Hood insulation is a type of heat shield that prevents the transfer of damaging radiant heat from under the hood. Hood insulation is a flat barrier that helps protect the hood and keep the engine warmer in the winter months.

But when we talk about heat shields, we usually mean metal plates located around exhaust system parts or other units that can build up heat in your vehicle.


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