Heat shield for exhaust for Type 4 engine Bay Bus 08/71-07/79Heat shield for exhaust for Type 4 engine This shield can be found on Type 2 buses between the silencer and the engine plating. It prevents that heat coming from the silencer will warm up the plating around the engine coolant fan. If this shield is missing the aspirated coolant air will be heated through the surrounding plating and you'll risk that the engine will be overheated by the warm coolant air. We notice that on many buses this protection