Garage Door Gear Sprocket Kit Fits 1/3 1/2HP Chain Drive Opener Replacement
Full kit: Gears, bearings, grease, manual, AND bonus hex wrench. 15-Minute Upgrade, Zero Hassle: Skip complicated disassembly! Gear & Sprocket Assembly ×1. Perfect Fit for 40+ Years of Models: Works with 1/3 & 1/2 HP chain drive openers (1984-2024), most standard 1/3 & 1/2 HP chain drive garage door openers.