Our Part# ST11341 OEM# 1301792 or SM23257
CHAIN, 40NP-83 W/ML, INPUT DRIVE SM
This part can be used on the following model(s):
Nautilus - SM916_Stepmill
Stairmaster - 7000PT_StepMill
Stairmaster - SM5_Stepmill_150005
Stairmaster - SM916_(Metal_Steps)
Stairmaster - SM916_(Plastic_Steps)