BREATHER (Komatsu KO3EB-21-15211)

KO3EB-21-15211: A damaged breather can allow contaminants into a sealed housing, leading to premature wear of internal components. This aftermarket replacement part references the Komatsu catalog and carries the cross-reference number KO3EB-21-15211. The breather's plain mechanical function is to equalize pressure inside a housing while blocking dirt and moisture. If the breather becomes clogged or fails, pressure buildup may cause seal leaks or component damage. During routine service, a breather should be inspected for cracks or blockages that could compromise its seal. Verify the serial number or application, then call (562) 693-7748.

Part number variants: KO3EB-21-15211, ko3eb-21-15211, KO3EB2115211, ko3eb2115211