Features: Placement on vehicle: rear, left, right. Reference OE part number: 27540AG14A, 27540AG14B, ALS1583, 5S11326, ALS1580, 27540AG12A, 27540AG12B, 5S11327. Function: these ABS sensors measure the rotational speed of the wheels and pass them to the car's engine control module, reducing braking distance and improving steering stability. Premium material: the wheel speed sensors are made of quality ABS plastic material, high strength, sturdy for long term use. Vehicle fitment: compatible for Subaru Legacy Outback 2007-2009 H4 2.5L, compatible for Subaru Legacy Outback 2008-2009 H6 3.0L. Specification: Product name: ABS Wheel Speed Sensor Replacement, Material: plastic, OE part number: 27540AG14A, 27540AG14B, ALS1583, 5S11326, ALS1580, 27540AG12A, 27540AG12B, 5S11327, Placement on vehicle: rear, left, right. Fitment: Compatible for Subaru Legacy Outback 2007-2009 H4 2.5L, Compatible for Subaru Legacy Outback 2008-2009 H6 3.0L. Package includes: 2 x Wheel Speed Sensor