Boat owners with smaller Mercury, Mariner, or Force outboards, this SEI MARINE water pump kit is exactly what you need for routine maintenance! This complete kit directly replaces OEM part number 46-99157T2 and fits 18-25 HP 2-stroke models plus 13.5-15 HP 4-stroke engines from 1984 through 2005. Regular water pump replacement is crucial for preventing overheating and serious engine damage, and this kit gives you everything you need in one package. SEI MARINE is known for quality marine parts that meet or exceed OEM specifications at a much more affordable price. The installation is straightforward if you're mechanically inclined, though you might want a service manual for guidance if you're new to outboard maintenance. Having a fresh water pump ensures proper cooling water flow to protect your engine during those long days on the water. Much cheaper than dealing with overheated engines or worse - piston seizure from cooling system failure. Whether you're doing preventive maintenance or your current impeller is showing signs of wear, this kit provides reliable performance and peace of mind. Keep one on hand as a spare for longer trips, or install it during your annual maintenance to keep your outboard running cool and reliable season after season. Definitely one of those essential maintenance items that can save you from much costlier repairs down the line!