... design oil hole cover, gearbox oil hole and the air inlet, air outlet, change the oil, gearbox oil seal, not ... phenomenon, no noise.3. 1.Original screw holes2.Air outlet3.Oil box hole cover4.Oil filter hole cover5 ... .Universal plastic screws6.Gearbox hole cover7.Air inlet 4. Material: Polymer alloy steel , resistance ... ,Best Servise! Auto chassis-engine guard board for Toyota Yaris