fan belt
From Longman Dictionary of Contemporary EnglishRelated topics: Motor vehiclesfan beltˈfan belt noun [countable] TTCthe belt that operates a fan which keeps a car engine coolExamples from the Corpusfan belt• My car threw a fan belt at a gas station a few weeks ago.• Nuts, bolts, a broken fan belt dropped from the engine.• Each is driven by an electric fan belt.• And at precisely twelve o'clock the fan belt broke.