B42 is a Timken accessory drive belt, listed as the transmission drive belt for a trailer refrigeration unit. It is a wear item, so it pays to inspect it at service intervals. Cracks across the belt width mean the rubber has hardened and lost its flex. Shiny, glazed sidewalls mean the belt has been slipping on the pulley, and squealing or fine black dust around the drive points the same way. Match the belt to your unit before ordering, and call us if you want help confirming proper fit.
Features
Timken accessory drive belt
Listed for the transmission drive of a trailer refrigeration unit
Cracks across the width or glazed sidewalls are signs it is due for replacement
