The Marantec 98875 Tab Replacement, Chain Drive is a dedicated repair component for Marantec chain-drive garage door opener rail systems. It replaces a worn or broken tab in the chain drive assembly so the trolley can travel correctly along the rail and the opener can open and close the door smoothly. This replacement part helps restore proper engagement and reliable operation without affecting the opener’s radio controls or motor performance.
Use this part when servicing a Marantec chain-drive rail that specifies part number 98875 in its parts diagram. Installation typically involves disconnecting power to the opener, relieving chain tension, accessing the rail/trolley assembly, swapping the tab, then re-tensioning the chain and testing safety reversal per the opener’s manual. Because chain rails vary by opener and rail style, confirm compatibility with your exact Marantec model and rail configuration before ordering. This non-electrical component is intended for residential garage door opener applications and should be installed according to the manufacturer’s service instructions or by a qualified technician.