About Brake Caliper : The brake caliper fits like a clamp on a wheel’s rotor to stop the wheel from turning when you step on the brakes. Inside each caliper is a pair of metal plates known as brake pads. When you push the brake pedal, brake fluid creates pressure on pistons in the brake caliper, forcing the pads against the brake rotor and slowing your car. Application: For Citroen Relay 2.2 HDi 100 Van 10/2006-04/2012 For Citroen Relay 2.2 HDi 100 Bus 03/2009-06/2011 For Citroen Relay 2.2 HDi 120 Van 10/2006-04/2012 For Citroen Relay 2.2 HDi 120 Bus 03/2009-06/2011 For Citroen Relay 2.2 HDi 130 Van 09/2011-12/2014 For Citroen Relay 3.0 HDi 160 Van 10/2006-03/2012 For Fiat Ducato 250 100 Multijet 2.2 D Van 10/2006-03/2012 For Fiat Ducato 250 100 Multijet 2.2 D Platform/Chassis 10/2006-03/2012 For Fiat Ducato 250 100 Multijet 2.2 D Bus 10/2006-2011 For Fiat Ducato 250 110 Multijet 2.3 D Bus 05/2014-04/2018 For Fiat Ducato 250 110 Multijet 2.3 D Platform/Chassis 05/2014-04/2018 For Fiat