Page last updated Sep 16, 2026 @ 05:19pm
305-0826
Replacement Voltage Regulator
Replacement Onan Generator Voltage Regulator
This part number 305-0826 is an improved, direct replacement for the voltage regulator used in several models of Onan Marquis Series Gen Sets.
Although our "standard" Model 305-0809-01 will work correctly for the 305-0826 application, only one mounting hole can be used. In response to customer requests we have developed our "exact fit" metal case replacement which uses a metal case just like the original unit. Our case design features indented sides to allow a socket to fit over the mounting bolts and thus make installation easier than with the original case.
Other features include improved circuit design and better heat dissipation (through gel encapsulation and larger internal heat sink). Unlike the epoxy encased originals, this item can be rebuilt.
It is built in the USA and backed by a 2-year Warranty.
This regulator is used in the following Onan Marquis Gen Set Models:
BGM Spec A and up
NHM Spec A and up
Item Number: 305-0826
Price: $504
Price last updated 9/14/2026
Shipping Weight: 2 lbs.
This item normally ships in approximately 3 days or less.
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