... .OEM Service is available 4.3 days delivery AVR Automatic R448 R448 Permanent Magnet Generator or A.R.E.P or Auxiliary ... generator voltage regulator is a compatible replacement for Leroy Somer R448, R449, R438, and AEM110RE016 and also Olympian FG Wilson 922 ... :MX341,MX321,SX440,SX460,AS440 Leroy Somer AVR:R230,R438,R448,R449 Marathon AVR:SE350 Siemens/Basler AVR:AVC63-7/7F ...