O-RING 13301M REC6F5-11515-00

Function and technical context

The 13301M O-ring is a critical sealing component that ensures tightness in pressure joints in the cooling system and hydraulic circuits of Mercury and Yamaha marine engines. This element works in conditions of constant thermal variation, preventing coolant leaks and loss of engine performance. Failure of this seal causes overheating of the engine, degradation of the coolant and possible irreversible damage to the engine block.

When to replace this part?

Sealing O-rings should be inspected periodically at each seasonal inspection, especially after working in extreme temperature conditions or after prolonged periods of inactivity. Symptoms of deterioration include visible coolant leaks around sealed joints, abnormal engine overheating, and increased cooling water temperatures. It is recommended to replace it preventively during any intervention in the cooling or hydraulic circuits to avoid costly repairs in navigation.

Engine Compatibility

Mercury/MerCruiser

Equivalent manufacturer part numbers