Ignitions and Electrical› Charging Systems

Cummins/Onan

SPO VOLT REGULATOR

$745.78

SKU: C021 305-0809-01

In Stock
In Stock
Ships by Jun 7
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The Cummins/Onan 305-0809-01 is an improved, direct replacement for voltage regulators used in several Onan Emerald, Marquis, and Microlite Series Gen Sets. It features improved circuit design, rugged weatherproof packaging, and better heat dissipation. It is built in the USA and includes a 2-year warranty.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandCummins/Onan
Part NumberC021 305-0809-01

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Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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