3W6144 Hub Fits Caterpillar Fits CAT 963BOne New Aftermarket Replacement Sprocket Hub Fits Caterpillar (Fits CAT) Track Loaders This sprocket hub is a direct fit replacement for the Fits Caterpillar (Fits CAT) 963 series track loader final drive assembly. The hub serves as the mounting interface between the drive sprocket and the final drive, and is a critical undercarriage drivetrain component. Keeping this part in good condition is essential for proper track engagement and reliable machine
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