17251-KE8-690 Grommet - Overview. The 17251-KE8-690 Grommet is a precision-designed rubber seal that supports the air cleaner housing system in Honda marine engine systems. It acts as an essential protective and insulating barrier, preventing abrasion and environmental damage to critical components passing through the housing. This OEM grommet is crafted to meet exact factory specifications, ensuring seamless integration with existing parts, maintaining optimal performance and durability.. Key F