TEGIWA Cooling Plate. Improves cooling efficiency by channelling more cold air to the radiator. This is achieved by redirecting the air flow that usually escapes over and around the top of the radiator, on to the radiator itself. This keeps coolant temperatures low and in-turn allows you to continue driving aggressively for longer on track. Being constructed from brushed stainless steel, not only does this plate offer your Impreza performance gains, but looks fantastic with the bonnet up too.