1Compatible Models: Fits for SD 130S, 130 SB, 130SRA, 130SRB, 150S, 150 SB, 150SRA, 150SRB, replaces part numbers 3888305, 3888306, 3586963, 22651246. 2Superior Protection: Saildrive ring anode is designed to offer superior protection. It prevents your expensive saildrive from the damaging effects, thereby extending its lifespan and ensuring a smooth boating experience. 3High Strength Material: Constructed from high hardness material, this saildrive anode exhibits excellent electrochemical properties. Its performance in saltwater is exemplary, long lasting durability. 4Regular Inspection Recommended: Check anodes regularly for optimal protection, and replace when pitting is detected, to protect your engine from costly damage. 5Original Standard Design: Manufactured according to original specifications, meets or exceeds OEM standards, ensuring appearance and function match original equipment. 1 xSaildriveAnode