This is the replacement oval seat post for the Catalog number 44000432 and 44000424 you will need to measure your current post base from center of the wheel to center of the other wheel if it is 10 - 1/8" from center to center you can replace it with this part. you will however have to remove all of the wheels and hardware from the old post to the new oval seat post. If you are not comfortable doing this please do not order this part.