YAMAHA GASKET 6AW-45113-00

Function and technical context

This gasket is part of the watertight sealing system on high displacement Yamaha F and FL series outboard motors. Its mission is to seal critical components of the engine block, preventing cooling fluid leaks and maintaining the structural integrity of the mechanical assembly. The deterioration of this element can compromise the tightness of the system, causing coolant losses, entry of seawater into internal areas of the engine and, consequently, accelerated corrosion of sensitive metal parts. Preventive replacement ensures that the engine maintains its thermal efficiency and protection against corrosion characteristic of the marine environment.

When to replace this part?

Engine gaskets require inspection during each seasonal maintenance and should be replaced if they show signs of hardening, cracking or permanent deformation after removing components. If you see coolant dripping around the areas sealed by this gasket, or if the engine loses thermal performance with no apparent cause in the cooling system, it is an indication that the seal has been compromised. Preventatively replacing the gasket during routine maintenance prevents costly emergency repairs resulting from water damage or overheating in open water.

Yamaha Engine Compatibility Chart

Equivalent manufacturer part numbers