To the naked eye, the grille of a truck or Jeep may seem like just an aesthetic cover piece that is installed on the front of vehicles to hide the engine. However, there's more to a grille than what meets the eye. The grille of a vehicle provides the ability for air to flow through the engine compartment which allows for cooling of the engine and prevents your truck from overheating. It also provides protection for the radiator by acting as the first line of defense against rocks and other debris that may puncture this crucial element of the vehicle. The grille may also act as a safety component by being a part of your truck or Jeep's crumple zone.