Kubota “ST Series” HST Cylinder Block Assembly. Part Number – T047039600. This listing is for a replacement cylinder block assembly which is applicable for use with the following Kubota “ST Series” models. If you are unsure whether this is the correct item for your machine, please supply us with your details and we will attempt to confirm correct fitment for you. This item is supplied with it’s original packaging which may be shop soiled from storage but the item itself is offered in as-new condition having not been fitted before.