Description: Item Type: Brake Caliper Condition: Brand New Warranty: One Year Warranty Bracket: With Bracket Inlet Port Size: M10 × 1.0 Brake Piston Count: 1 Pison Bleeder Port Size: M10 × 1.0 Location: Front Left, Driver Side Quantity Sold: A Set of Two Pieces OE Number-1: 18-B5400A, 13578100, 13579139, 22796445 OE Number-2: 18-B5401A, 13578098, 13579138, 22796444 Fitment: For Buick LaCrosse 2012-2016 V6 3.6L Rear Left & Right For Buick Regal 2011-2017 L4 2.0L Rear Left & Right .