Bearing Carrier Housing Anode Zinc | Martyr CM431708Z Martyr Zinc Bearing Carrier Housing Anode | CM431708Z Zinc Martyr anode protects bearing carrier from corrosion in salt water. BRP/OMC bearing carrier anode Zinc anode for salt water applications 3 in long 2 in. wide 0.9 in. high Direct replacement for BRP/OMC 0431708