WATER PUMP GASKET 161586 PAF8-04000006

Function and technical context

This water pump gasket is an essential component in the cooling system of low horsepower Mercury Mariner engines. It acts as a sealing element between the water pump and its adjacent components, preventing leaks of the coolant that circulates through the engine cooling circuit. Its correct operation is critical to maintain the constant circulation of water through the engine block, avoiding overheating and internal corrosion of the cooling galleries. If this gasket deteriorates or loses its sealing capacity, it allows air to enter the circuit or water to leak out, compromising the effectiveness of the cooling system and exposing the engine to irreversible damage.

When to replace this part?

A worn water pump seal is usually manifested by coolant leaks around the pump, increased engine temperature (especially during prolonged cruising at high load), or rust and deposits around the seal area. It is recommended to check the condition of all gaskets in the cooling system during the annual pre-season maintenance and, if there are signs of leaks or wear, replace them preventively. Replacing this gasket preventatively is a low-cost measure that prevents costly repairs due to engine overheating or corrosion in the middle of summer or during an outing.

Compatible Mercury Mariner Engines

Equivalent manufacturer part numbers