Knowing the size of the belts is very helpful to have. I found some information on the belt part number 133035. I am adding the link below to help you with your question while you wait for your expert response. To better help your expert I would like to suggest adding your model number. It may take 24-48 hours.
I will be happy to assist you. I looked up part number 133035. The dimensions for that belt are 1/2x 41 inches. I looked up part number 26143 but could not find that to be a valid belt number. If you could please reply below, with the model number the belt is on and what it is used for. I will be able to look up the belt and see if the number changed.