Your engine’s fan belt has two important roles, firstly, it helps to run the engine’s cooling system

Your engine’s fan belt has two important roles, firstly, it helps to run the engine’s cooling system. Secondly, it drives the alternator which generates electric power. If the belt is worn, cracked or slipping, it won’t be able to do either of these things correctly. Each Perkins engine has its own belt size and configuration. By buying a genuine Perkins part, you know the belt has been designed especially for your engine and has been rigorously tested.