Seaward Water Heater Magnesium Anode | Whale 74556 Quicksilver Thunderbolt and Alpha I units s/n

and Alpha I units s/n 2791957 and above

For GM V6 and V8 engines with stamped steel timing covers

84-816761T4

Automatically detects battery sulfation and acid stratification to restore lost battery performance for stronger engine starts and extended battery life

Seaward Water Heater Magnesium Anode | Whale 74556 Quicksilver Thunderbolt and Alpha I units s/nSeaward Water Heater Magnesium Anode Whale 74556 Seaward Water Heater Magnesium Anode Whale 74556 Designed for Seaward water heater systems, this 3 4 in. NPT magnesium anode sacrifices itself to shield your tank from corrosion damage. Regular replacement maintains optimal protection and extends water heater longevity, making it an essential maintenance component for marine applications. Water heater anode 3 4 in. NPT Magnesium For Seaward water heaters