Onan Cummins 305-0854-04 SR Voltage Regulator AVR Board for Onan Generator Set - Used

Onan / Cummins Onan 305-0854-04 SR-series automatic voltage regulator (AVR) board on finned aluminum heat sink, with 8-position terminal strip (FIELD +/-, AC POWER, AC SENSE, JUMPER) and 50/60 Hz factory-set adjustment decal.

Application: Onan / Cummins Onan generator sets that use the SR-type voltage regulator, including marine and industrial sets. The exact generator model and spec have not been verified from the photographs — match to your generator nameplate.

Condition: Used, untested take-out. Shows service grime, yellowed conformal coating, and heat-sink scuffing. No visible burnt traces, cracked components, or bulged capacitors, but no electrical testing has been performed and none is implied.

Buyer must confirm fitment by part number, photos, dimensions, engine model, serial number, and application before purchase. Used marine part sold as-is unless otherwise stated. No returns on electrical, used, special-order, or installed parts.