●[Vehicle Fitment]: Compatible with Buick LaCrosse/Regal 2012-2013---Rear Left, Driver Side ●[Reference Number]: 22785575, 22868982, 23497011, 1247246, 1247778, 5S14005 ●[Important Note]: For 2012-2013 LaCrosse, it fits models with 4-Link Rear Axle (GNC) and without Real time damping chassis (F45); For 2012 Regal, it fits models with 4-Link Rear Axle (GNC); For 2013 Regal, it fits models with 4-Link Rear Axle (GNC) and Value Added Rear Suspension (VRN) ●[Directly Fit]: OE Replacement ABS Wheel Speed Sensor, Easy installation; Excellent quality materials for a long service lifespan; Output signal stable and Fast response time. ●[Buy with Confidence]: 1 Year Unlimited-mileage Quality Guarantee---We extremely value your satisfaction and strive to provide you good shopping exprience. Any further question, please feel free to contact us at any time.