Manufactured and tested to high TMD Friction standardsBrake Disc, PCD23012. OEM Numbers: BJS726251B–MAZDA,BJS726251A–MAZDA,B45G26251A–MAZDA,B45G26251B–MAZDA,BKC326251–MAZDA (CHANGAN). Every DON brake disc is partially coated for corrosion protection – black coated rim and outer hub.