SUZUKI WATER PUMP KIT 17400-87D10

Function and technical context

This water pump kit integrates all the components necessary to keep the water cooling system operational on large displacement Suzuki outboards. The water pump is the heart of the cooling circuit: it drives seawater through the engine to dissipate the heat generated by combustion, protecting the block, cylinder head and exhaust from extreme temperatures. A worn impeller or deteriorated casing drastically reduces coolant flow, causing overheating, activation of the thermal limiter, and in severe cases, irreversible damage to the cylinder head or engine block. As it is a complete kit, it includes the impeller, the casing, the gaskets and the sealing elements necessary for a complete replacement of the assembly, guaranteeing the correct functioning of the cooling circuit after the intervention.

When to replace this part?

The most common symptom of a bad water pump kit is engine overheating or no cooling water jet (“tell-tale”) during startup and operation. The rubber impeller hardens and loses elasticity with use and thermal cycles, so it is recommended to check and replace the assembly every 300-400 hours of navigation or, at least, every two seasons even if the engine has not reached that hour meter. Renewing the kit preventively during each seasonal maintenance avoids costly breakdowns due to overheating at sea, where a forced stop can compromise the safety of the boat.