The W10259 Vortex Rok GP Oil Seal, sized at 20mm x 35mm x 4.5mm, is a top - notch choice for your side cover. It's perfect for the mag side and effectively seals the side cover, preventing oil leakage and ensuring smooth operation.

Using this oil seal is easy. First, make sure the side cover is clean and free of any debris. Then, gently place the oil seal in the right position on the side cover. Press it down evenly until it fits snugly. When handling the oil seal, be careful not to damage it with sharp tools. For maintenance, regularly check the oil seal for any signs of wear or damage. If you notice oil leakage, it might be time to replace the seal. Keep the area around the oil seal clean to extend its lifespan.