Page last updated Sep 16, 2026 @ 05:29pm

305-0809-01
305-0851
305-0782-01
305-0830-01

Replacement Voltage Regulator

 

Replacement Onan Generator Voltage Regulator

This part number is an improved, direct replacement for the voltage regulator used in several models of Onan Emerald, Marquis, and Microlite Series Gen Sets.

Features include improved circuit design, rugged weather-proof packaging and better heat dissipation (through gel encapsulation and larger internal heat sink).

It is built in the USA and backed by a 2-year Warranty.

This regulator replaces the following ONAN part numbers: 305-0809-01, 305-0851, 305-0782-01, 305-0830-01, 305-0826* (*We also offer a metal-case "direct fit" replacement for Onan part number 305-0826 that mounts exactly the same as the original. This standard model will function correctly in place of the 305-0826, but some mounting modification may be necessary).

These regulators were used in the following Onan Gen Set Models:

305-0809-01 used in Emerald RV Gen Set Models:

BGE: Spec H and up
BGEL: Spec E and up

305-0782-01 used in Emerald Gen Set Models:

BGE: Spec F & G
NHE: D thru G
NHEL: Spec D, E & G

305-0851 used in Microlite Gen Set Models:

KY: Spec A thru H

Item Number: 305-0809-01 Price: $485 Price last updated 9/14/2026 Shipping Weight: 2 lbs. This item normally ships in approximately 3 days or less.

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