LID 832734A2

Function and technical context

The 832734A2 cover is a closure component that regulates the pressurization and evacuation of gases in the crankcase ventilation system of outboard and marine engines. This piece is part of the lubrication system, allowing the vapors and gases accumulated in the crankcase to be expelled in a controlled manner while protecting the interior of the engine against water infiltration and external contaminants. Its correct operation is essential to maintain the balance of internal pressures, avoid oil leaks and preserve the integrity of the engine seal during operation in different navigation conditions.

When to replace this part?

The breather cover should be inspected at each seasonal maintenance, especially if you notice oil leaks around the sealing area, presence of water in the crankcase or abnormal engine behavior related to internal pressurization. Although it does not have a strict replacement interval like filters, wear of its seals or cracks in the body can compromise the tightness of the system; Replacing it preventively during general maintenance avoids costly repairs and internal engine corrosion.

Engine Compatibility Table

Mercury/MerCruiser

Equivalent manufacturer part numbers