Product Overview The Drive Belt Idler Pulley LR073726 is a Genuine OE-grade component engineered for the 2.0L Ingenium petrol and diesel engines in select for Land Rover vehicles. Also known as a deflection or guide pulley, this 65mm pulley guides the serpentine accessory drive belt along its path around the front of the engine, maintaining belt alignment and tension for reliable operation of the alternator and other driven accessories .T2H1400 is the Jaguar equivalent part