The Genie 27335A.S Chain Assembly is a genuine OEM replacement for select Genie chain-drive garage door openers, engineered to restore smooth, reliable travel when the original chain-and-cable loop has stretched or worn. Designed for standard residential door applications, this complete assembly helps maintain proper carriage movement and drive performance, ensuring consistent opening and closing of the door. It is intended for chain-drive systems only and is not compatible with screw-drive or belt-drive models.
For best results, verify compatibility by matching your opener model and rail type to Genie’s official parts charts for 27335A.S. Installation typically involves disconnecting power, relieving chain tension at the turnbuckle, removing the old loop, routing the new assembly over the drive sprocket and idler, setting proper tension per Genie specifications, and reprogramming open/close travel limits and force. After installation, test the safety reversing system and photo-eyes to confirm correct operation. Regular maintenance—such as checking tension, confirming door balance, and following Genie’s lubrication guidelines—will help extend service life and preserve dependable performance. This OEM Genie chain assembly is an ideal replacement part for homeowners and technicians servicing residential chain-drive garage door openers.