Genuine OEM Jaguar Engine to Transmission Adapter, part number AJ89178. This critical component is designed to ensure precise alignment and a secure connection between the engine cylinder block and the transmission housing. It is positioned at the interface of these two major assemblies. Weighing only 0.017 kg, this small adapter is essential for maintaining correct tolerances. Using a genuine OEM adapter guarantees the exact dimensions and material properties required for proper drivetrain assembly and long-term reliability.