If it's minimal maintenance you're after, these quality PVC belts with impregnated lubrication require less attention to make things run smoothly.

• This Sportsmith treadmill running belt fits Horizon T401 treadmills, Serial# TM603*
  
• User facing material: PVC
• User facing surface: Black Diamond
• Impregnated Lubrication
• Finger-spliced seam
• 1 ply
  

*Some machines with the same name use different parts. This is why you should always match your model# or serial#.