This lower bellows assembly connects the seed metering unit to the discharge tube on the grain drill. It forms a flexible, sealed passage that guides seed from the metering roller into the coulter boot, preventing spillage or misdirection during operation. A cracked or collapsed bellows causes seed loss and uneven row distribution, as the seed stream is no longer contained. The bellows is molded to match the original port geometry so it seats correctly against both the metering housing and the outlet tube without additional sealing.