RETAINER - OIL (Mitsubishi MB1040303)

A worn retainer can allow oil to bypass its intended path, leading to pressure loss or leakage. The retainer, often a metal or composite ring, holds a seal or bearing in position within a mechanical assembly. Mitsubishi lists this part under number MB1040303 as an aftermarket replacement component. Its primary function is to secure a sealing element against axial movement during operation. If the retainer fails, the seal may shift, causing gradual fluid seepage and reduced system efficiency. This item ships at approximately 1.407 pounds. Verify the serial number or application, then call (562) 693-7748.

Part number variants: MB1040303, mb1040303