Genuine OEM Jaguar Accessory Belt Pulley, part number AJ89037. This pulley is a critical component in the engine's accessory drive system, guiding the serpentine belt to power various engine accessories such as the alternator, power steering pump, and air conditioning compressor. It ensures proper belt routing and tension, contributing to the efficient and reliable operation of these systems. Crafted to Jaguar's exacting standards, a genuine OEM pulley provides precise dimensions and durable bearing quality for long-lasting, quiet performance and correct belt alignment.