Aftermarket Side-Power 501180 Zinc Thruster Anode Martyr - Side-Power 501180 Zinc Thruster Anode CMSGSP501180Z Outside diameter 73mmHeight 53mmInternal diameter 8.5mmInternal hex 31mm Replaces - 01053 Product Information: For use in salt water Alloy is manufactured to exceed or meet US Military... MSRP: Was: Now: $38.96 Add to Cart