Mercury coils #7370A13 superceded to 832757A4 qty of 3 with covers, mounting plate and plug wires. From a fresh water unit. Works with 6hp up to 200hp. You should use a parts lookup online to check your serial number and see what your correct coil part number would be. No returns on your purchase if you need a different part number. Boats.net has a very easy lookup system based on Mercury schematics.