Liftmaster K144B0018 Pulley

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LiftMaster's K144B0018 (also known as 144B18) is an idler pulley replacement kit compatible with models ATS211 and ATS211R Garage Door Operators. Idler Pulleys provide tension to the operator belt and keeps it in place during operation. Check the manual for your specific model number before ordering.


  • K144B0018 Idler Pulley Replacement Kit

  • For ATS211 and ATS211R garage door openers

  • Provides tension to operator belt

  • Also known as: 144B18, 144B0018