1OE Number: The referencing OE number of this round zinc anode are 55321 87J01, 55321 87J00, which is molded and designed depend on the original data. 2Fitment: The zinc anode block is a replacement for Suzuki Outboard Motor 4T, for 30HP DF 30ATL2 Beginning VIN, for 30HP DF 30ATHLW2, for 50HP DF 50ATL2 Beginning. 3Durable Material: All zinc precision manufacturing, with oxidation, corrosion resistance, seawater environment resistance and other characteristics, durable in both salt water. 4Enhance Engine Performance: Inspect the anode regularly for optimal protection and replace it when signs of corrosion or pitting are found to protect your engine from costly damage. 5Ideal Replacement: Direct replacement installation, meets or exceeds OEM standards for the replacement of old and damaged one on original vehicles. 5 xRoundZincAnode