Precision-Matched Gear Kit For Common Chain Openers

This gear kit provides exact mechanical replication of original equipment specifications for widely deployed chain-drive garage door openers. It comprises a helical gear and top hat sub-assembly, a case-hardened worm gear, self-lubricating wear bushings, synthetic grease formulated for low-temperature UK environments, and all fasteners required for secure reinstallation. Materials include reinforced thermoplastic for gear bodies and alloy steel for the worm shaft and bushing sleeves. Dimensions: 15 × 10.7 × 6.8 cm; weight: 500 g. Confirmed fit for LiftMaster, Chamberlain, Craftsman, Sears, Master Mechanic and Wayne Dalton chain-drive units — including model families 2245, 2255, 2265, PD210, PD212, PD610, PD612K, and the comprehensive 1200 Series (1240–1265). Installation does not require motor removal or controller reset — just standard workshop tools and ~30–45 minutes of hands-on time.