GM TH-400 Automatic Transmission TailhousingShort Shaft DesignAluminumIncludes:Output Yoke BushingSeal JEGS 60312 GM TH400 Automatic Transmission Tailhousing is made from heavy-duty high-quality cast aluminum to the OEM (original equipment manufacture) specifications and is a perfect replacement for a damaged or worn-out unit. This housing includes an output shaft bronze bushing & seal installed and also incorporates a heavy-duty mounting pad on the bottom for attaching your transmission mount.