Replacement Drop-In Onan Generator QD8000 For Dynamax Isata RV
Updated 08/15/2025 | Published 07/17/2025
Question:
I’m replacing an older 8000W Onan in my Dynamax Isata. Will the QD 8000 CM44RR bolt in without modification?
asked by: Raphael
Expert Reply:
Yes Raphael, this is one of the few “just drop it in and go” options. The Onan Cummins 8k watt diesel generator # CM44RR shares the exact footprint, bolt pattern, and exhaust layout as your original QD 8000. It’s quieter, cleaner, and starts reliably even in cold temps thanks to its glow plugs.
If your kids sleep above the generator bay, the noise difference is night and day.
What happened to the old one? Just tired after years of use?
Product Page this Question was Asked From
Onan Generator - Quiet Series Onboard RV Generator - 8,000 Watts - Diesel
- Generators
- No Inverter
- Diesel
- 4001 Watts or More
- Onboard Generator
- 12V Output
- Carbureted
- Electric Start
- Cummins Onan
more information >
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Andrew N.
8/15/2025
Hey Raphael, did you end up replacing your old generator with the new Onan Cummins 8k watt diesel one? I'm curious if the quieter operation made a big difference for you, especially if your kids sleep above the generator bay. Let me know how it worked out; it could really help others in a similar situation!