37250-ZW5-010ZA FA Tach/Hr Meter BK - Overview. The 37250-ZW5-010ZA FA Tach/Hr Meter BK is a critical component in Honda marine engine systems, designed to provide accurate engine RPM and operating hour readings. As a genuine OEM part, it enables boat owners and marine professionals to monitor engine performance and maintenance schedules effectively. Compatible with Honda marine engines typically in the 75 to 225 HP range, this tachometer/hour meter features a black face with clear white numeral