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Jan 23, 2026 - 12:51 AM
No, A042P619 is not the right carb kit for your 4KY-26100R (Spec R).
A042P619 is the carburetor/repair kit used on non-EVAP KY series, typically Spec A through P.
Your generator is Spec R, which is in the EVAP-era range, and those use a different carburetor.
What you want for a 4KY Spec R (EVAP):
Cummins Onan carburetor part number: A062T421 which you can find here -->
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