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LiftMaster Pulley, 1-5/8" OD, 1/2"B, 4L Belt | LIF-K17-10335 HySecurity Barrier Gates Confirm your existing garage doorLiftMaster Pulley, 1 5 8" OD, 1 2"B, 4L Belt LIF K17 10335 This is a replacement Pulley (1 5 8" OD, 1 2"B, 4L Belt) for use with various LiftMaster Commercial Door Operators. Also known as: 1710335 451106 17 10335 17 5111 Genuine LiftMaster replacement part.