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Gear and Sprocket Kit, CSO/ATS
041C4470 is a Gear and Sprocket Replacement Kit. Compatible with Chamberlain® CSO Series, and various ATS Model Chain Drive Garage Door Openers. This complete kit includes: Helical gear and top hat assembly, worm gear, wear bushings, grease, and hardware needed to replace the chain drive gears. Check the manual or replacement parts diagram for specific part information before ordering to ensure compatibility.