What is used to protect painted surfaces in the engine compartment from scratches caused by a technician's belt?

Using a fender cover is a standard practice in automotive maintenance to protect painted surfaces in the engine compartment, particularly from scratches caused by the technician's belt or tools. The fender cover is typically made of a soft, padded material that provides a barrier, preventing any potential damage while the technician works on the vehicle. This is essential because the fender and surrounding painted surfaces can be easily scratched or marred during repairs or inspections.

A fender cover is designed specifically for this purpose and is usually large enough to cover the fender area and have additional space to prevent any contact with the painted surfaces around the engine compartment. Other options like a blanket cover, paper cover, or carpet cover may not provide the same level of protection due to differences in material or design, making them less effective for the task at hand.