[Compatible Vehicles] - 2PCS Brake Calipers Replacement For 2006-2011 For BMW For 323i 2.5L,2006 For BMW For 325i 3.0L,2006 For BMW For 325xi 3.0L,2012 For BMW For 328i 2.0L,2007-2013 For BMW For 328i 3.0L,2009-2013 For BMW For 328i xDrive 3.0L,2007-2008 For BMW For 328xi 3.0L,2013-2015 For BMW For X1 2.0L [OE Reference Number] - Rear Driver: 19-B3226; Rear Passenger: 19-B3227 [Product Informations] - Rear: ①Brake Piston Count - 1 piston; ②Piston Diameter - 42mm; ③Inlet Port Size - M10X1; ④Bleeder Port Size - M8X1.25; ⑤Piston Material - Iron; ⑥Color - Sliver [Product Features] - ACZCR brake calipers have undergone air tightness testing and salt spray testing, and the piston sealing and service life meet or exceed the original factory standards. Regardless of the road conditions, sensitive braking is safer and more effective, shortening the braking distance and providing flexible operation [Technical Focus] - 1.Zero-Positioning Tech: 3D-scanned OEM specs ensure 99.7% mounting surface accuracy, eliminating bracket misalignment; 2.True Plug & Play: Maintains factory hydraulic line orientation, no shims/grinding required Features:
Direct OE replacement
Enhanced braking performance
Faster brake response
Improves the handling feeling

Installation Notes:
Verify compatibility before installation
Use proper tools and torque specifications
Bleed brake system after replacement

Compatibility:
2006 For BMW For 325i 4-Door
2006 For BMW For 325xi 4-Door
2007-2013 For BMW For 328i 4-Door
2009-2013 For BMW For 328i xDrive 4-Door
2007-2013 For BMW For 328i 2-Door
2009-2013 For BMW For 328i xDrive 2-Door
2013-2015 For BMW For X1 4-Door
2006-2011 For BMW For 323i 4-Door
2007-2008 For BMW For 328xi 2-Door
2007-2008 For BMW For 328xi 4-Door