This is the replacement Walking Belt for the Horizon T-101 Model. Part Number: 49009403. Fits the following models: Advanced Fitness Group: 3.5AT – TM659B – 2015. Horizon: Horizon – CT5.3 – 2012 (TM660), Horizon – GS950T – 2010 (TM626), Horizon – T101 – 2010 (Before SN TM6211006CL00400), Horizon – T101 – 2011 (After SN TM6211006CL00401), Horizon – T101-03 – 2012 (TM659). Tempo Fitness: 632T – TM667 – 2012.