Pulley and bracket for Linear HBT belt drive rails.
Genuine Linear replacement part, number 218954-03. Fits the following Linear garage door operator models: 661, LCO50, LCO75, LDCO800, LDCO801, LDCO841, LDCO850, LDCO852, LDCO863B, LDO33, LDO50, LSO50, LSO50-2T1KB, LSO50-2T1KB8.
Use the parts diagram on the model category page to confirm this is the correct part for your operator before ordering.