ITEM NAME:2 Stroke 9.9hp 15hp 18hp Outboard Motor Engines Cylinder Head Gasket for Yamaha Product Description Description: Cylinder Head Gasket for Yamaha 2 Stroke 9.9hp 15hp 18hp Outboard Motor Engine 63V-11181-A1-00 Specification: Replaces part number: 63V-11181-A1-00 Center hole diameter: about 58mm/2.28 inches Applicable model: For Yamaha 2-stroke 9.9hp 15hp 18hp outboards Note: 1. There may be slight size deviations due to manual measurement, different measuring methods and tools. 2. The picture may not reflect the actual color of the item because of different photographing light, angle and display monitor. Included: 1 X Cylinder Head Gasket.For Yamaha 2-stroke 9.9hp 15hp 18hp outboards. Included: 1 X Cylinder Head Gasket. The picture may not reflect the actual color of the item because of different photographing light, angle and display monitor.