SUZUKI WATER PUMP KIT 17400-99J01

Function and technical context

This water pump kit is part of the seawater cooling system of Suzuki four-stroke A and B series outboard engines. Its function is to boost the water flow necessary to maintain the engine's working temperature within safe limits, preventing overheating of the block, cylinder head and internal components. The kit includes all the wear elements of the pump - impeller, casing, gaskets and seals - allowing a complete renewal of the pump group in a single maintenance interval. A failure in this assembly can cause severe overheating, with the consequent risk of irreversible damage to the engine, so its correct operation is critical for the reliability of the boat.

When to replace this part?

The most common symptom of impeller and water pump wear is the reduction or absence of the cooling water jet at the discharge spout, along with the temperature light coming on or the overheating acoustic warning. Rubber impeller blades harden and crack with use, especially if the engine has been run dry even briefly. It is recommended to replace the water pump kit every 300 hours of boating or once per season in heavy use, whichever comes first; Renewing the assembly preventively is common practice in nautical workshops to avoid costly breakdowns at sea.