This 10 Tooth Chain Sprocket sits on the shaft on top of the Genie garage door opener powerhead. The garage door opener chain goes around this 10 tooth sprocket while the teeth on the sprocket grip the chain so it stays on track. This is a genuine Genie replacement chain sprocket that will allow you to quickly replace your old one.
Genuine Genie Replacement Part Includes only: 10 Tooth Chain Sprocket Compatible with Models ProMax®: 700, PMX 1200, GPS 700 IC, GPS 1200 IC, PMX 300 IC/A, PMX 500 IC/A, PMX 300 IC/B, PMX 500 IC/B, IC250, IC250/B, PMX 300 IC/A, PMX 500 IC/A, PMX 300 IC/B, PMX 500 IC/B that used the chain rail