REAR BRAKE PAD IDENTIFICATION

Applicable Models

Related Category/Subcategory/Symptoms

BRAKES / GENERAL INFO / SERVICEABILITY
BRAKES / GENERAL INFO / OTHERS

MTOL - 4946 Dealer Repair Information

Symptom and Conditions

*** SEE MARCH/APRIL 2007 M-TIPS FOR FULL DETAILS ***                   
                                                                       
For 2004-2007 Mazda3 and 2006-2007 Mazda5 vehicles, there are many rear
brake pad part numbers listed.  The difference between pads is the     
friction material and mounting spring orientation.  The pads are inter-
changeable.  Use the following information as a guide to select pads.  

Repair Procedure

FRICTION MATERIAL                                                      
The type of material used is specific to the first 4 characters in the 
part number.  They are as follows:                                     
                                                                       
*Old Type - BPYK - Material used from initial Mazda3 production until  
            11/16/2005.                                                
*New Type - C2Y3 and B3YP - Updated friction material designed to      
            address squeak noise in cold conditions during initial brake
            application.                                               
                                                                       
MOUNTING SPRING                                                        
The inner brake pad of each rear wheel has a spring to prevent the pad 
from rattling.  Spring design varies with the pad set as shown below.  
TYPE A and TYPE B brake pads are interchangeable.                      
interchangeable.                                                       
                                                                       
TYPE A MOUNTING SPRING (OLD STYLE)                                     
Identical springs on each side and a spring running along the bottom on
the inner pad backing.  Identical springs clip onto caliper piston and 
the bottom spring applies pressure on the piston to prevent rattle.    
Outer pad is installed on caliper support, inner pad is installed on   
caliper.                                                               
                                                                       
*** SEE MARCH/APRIL 2007 M-TIPS FOR DIAGRAM ***                        
                                                                       
TYPE B MOUNTING SPRING (NEW STYLE)                                     
Torsional spring is on top of inner pad backing.  With both pads       
installed on caliper support, spring is compressed by the caliper when 
the caliper is installed.                                              
                                                                       
*** SEE MARCH/APRIL 2007 M-TIPS FOR DIAGRAM ***                        
                                                                       
PART NUMBER (PAD SET)      MOUNTING SPRING TYPE    FRICTION MATERIAL   
BPYK-26-48Z                     Type "A"             Old Type
BPYK-26-48ZA                    Type "A"             Old Type
BPYK-26-48ZB                    Type "B"             Old Type
B3YP-26-48Z                     Type "A"             New Type
C2Y3-26-48Z                     Type "A"             New Type
C2Y3-26-48ZA                    Type "B"             New Type