SUZUKI WATER PUMP KIT 17400-94J00

Function and technical context

This water pump kit integrates all the components necessary for the correct operation of the seawater cooling system in Suzuki DF series outboard engines. The water pump is the heart of the cooling circuit: it is responsible for continuously driving water from the outside towards the engine block, evacuating the heat generated during combustion. A failure in any of the elements of the kit - impeller, casing, gasket or shaft - causes an immediate drop in coolant flow, which can lead to overheating, activation of speed limitation due to thermal protection and even serious and irreversible damage to the engine block. The reference 17400-94J00 groups all the wear parts of the pump assembly in a single kit, facilitating a complete and reliable inspection.

When to replace this part?

The most common symptom of deterioration of the impeller and other internal components of the pump is the reduction or absence of the cooling water jet visible on the engine indicator (the so-called "witness jet"), sometimes accompanied by a temperature alarm or loss of power due to electronic protection. It is recommended to check and inspect the impeller and the rest of the kit elements every 300-400 hours of navigation or at the beginning of each season, since the rubber of the impeller hardens and cracks over time even without prolonged use. Renewing the kit preventively each season avoids strandings due to cooling failure and the costly repairs associated with overheating at sea.