My product number is the same but a3 at the end, will this still work?
No this will not work as it does not cross reference with your OEM number. Sierra does not make one as a replacement for your OEM number. Part number 174-2075K2 from CDI Electronics cross references with 398-832075A3.
This does not cross reference with that OEM number. It cross references with 398-832075A6. If you need assistance finding the right stator call us at 1-800-914-1123 with make, model, and serial number to your engine.
1987 mercury 90hp overcharging changed rectifier and solenoid still overcharging what shouid i do?
There are various factors that it could be that you would need to talk with a local technician to properly diagnose it. You will need to do that or you can post a question in our forums to get feedback with other boaters at http://forums.iboats.com/