Replacement trolley assembly for Liftmaster, Chamberlain, Sears, Craftsman screw drive garage door opener models 2220, 2110, PD420, PD460-2, 9950, 9960, 7902, 1000SD, 2000SD, 1000SDR, 20000SDR, 4600, 4920, 4640, and 9902 - manufactured between 1995 and present - all models may not be listed here so call our toll free helpline to confirm the part for your specific model.
DOES NOT INCLUDE RACK 81C168 - SEE BELOW
