Description
Factory Cat lists this as part 5421S: the brush, 18" .070 grit W/Plate.
It measures 18 inches.
Abrasive grit-impregnated filament at .070 diameter. The grit is bonded into the bristle rather than applied as a coating, so it keeps cutting as the bristle wears down.
Supplied with the mounting plate fitted.
Verify fitment by model and serial number. Two machines of the same model can take different components.
We can confirm this against your machine's parts breakdown — just send the model and serial number.