... direct damage, humanization design oil hole cover, gearbox oil hole and the air inlet, air outlet ... , change the oil, gearbox oil seal, not only convenient, dust-proof ... cover4.Oil filter hole cover5.Universal plastic screws6.Gearbox hole cover7.Air inlet 4. Material: Polymer ... CM space gap buffer will protect the gearbox beem impacted. )6.Installation: Light weight, easy to install, ...