Recommended Cummins Onan Exhaust Kit for a QG 4000 Generator 4KY-26100R

Updated 09/06/2026 | Published 08/13/2026

Products Featured in This Question

Onan Generator - Quiet Series 4000 EVAP Onboard RV Generator - 4,000 Watts - Gasoline

(4)

$4076.57

Cummins Onan Exhaust Kit

$88.56

Question:

2021 Jayco Alante 27A Looking for the exhaust tail pipe for the QG 4000 model number 4KY-26100R, serial number C210888063. Approximately 3.5inch X 22inch X 1 1/4. Needing the exhaust pipe shown in picture 3 of the In Use/Installedinch pictures. Any suggestions?

asked by: Glenn B

Expert Reply:

Thanks for the information Glenn! The Cummins Onan Exhaust Kit item # CM85FV is the correct one for your Quiet Series 4000 EVAP Onboard RV Generator item # CM32ZR.

The Cummins Onan Exhaust Kit item # CM85FV is designed specifically to fit the Onan MicroQuiet 4KY series generators. It has a 1-1/4" outer diameter, is 21-7/8" long overall, and has a 90° bend which drops down 3-1/2" from where it connects to the generator.

I attached a diagram below that will show you the dimensions of the Cummins Onan Exhaust Kit item # CM85FV.

Where do you typically run your QG 4000? Do you boondock or tailgate at all? Feel free to answer this and throw in any other questions you have, where it says Add Comment.