OE Number-1: 18-B4938, 18-P4938, 18-P4939, 18-B4939, 184939 OE Number-2: 89040311, 89040315, 164939, 164938, 89040312, 89040315 Description: Item Type: Brake Caliper Condition: Brand New Warranty: One Year Warranty Installation Position: Front Driver & Passenger Side Inlet Port Size: M10 × 1.5 Piston Size（OD) (in): 1.79 Brake Piston Count: 2 Pistons Bleeder Port Size: M10 × 1.5 Note: with Mounting Bracket, with Phenolic Piston Fitment: For Chevrolet Colorado 2004-2008 All Engine 2 Phenolic Pistion Front Left & Right .
