Air and Fuel› Air Cleaners, Filters, Intakes and Components
Cummins/Onan
CUMMINS/ONAN BREATHER TUBE FITS HGJA SERIES GENERATOR
SKU: C021 123-2109
Easy — 1–2 hours
Description
MIA's Description
It plays a vital role in regulating essential airflow for your generator's engine health.
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
| Brand | Cummins/Onan |
| Part Number | C021 123-2109 |
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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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