The idler pulley is a fixed tensioning component in the accessory belt drive system of the 4.4 TDV8 diesel engine, responsible for guiding and maintaining correct belt alignment across the serpentine drive path. Unlike the tensioner pulley, the idler carries no spring-loaded mechanism but must rotate freely under load; worn or seized bearings will cause belt misalignment, audible squealing, or premature belt wear. This 80mm variant applies to vehicles from VIN BA000001 onwards. Key Features 80mm diameter pulley, matching OEM dimensions for the 4.4 TDV8 accessory belt drive system Designed as a direct bolt-on replacement requiring no modification during installation Supplied to OEM specification under Land Rover part number LR025083 When replacing this pulley, inspect the drive belt and tensioner pulley simultaneously as these components wear at similar intervals Vehicle Fitment This pulley fits the Range Rover (2010–2012) from VIN BA000001, Range Rover (2013 onwards), and Range Rover Sport (2014 onwards), all equipped with the 4.4 TDV8 diesel engine. Not sure about fitment? Feel free to get in touch at [email protected]