1999 BMW 323ti Engine: 2.5L L6 GAS; With Hydraulic Tensioner; Does not include pulley; Position: Alternator, Power Steering and Water Pump;. 2000 BMW 323ti Engine: 2.5L L6 GAS; With Hydraulic Tensioner; Does not include pulley; Position: Alternator, Power Steering and Water Pump;.