Looking for muffler part number

[spider4446]

Hey folks,
I’m having a hard time finding a part number for a muffler on a Kohler SV720-0023. The muffler isn’t available on the sites I’ve checked and the part number isn’t shown on the parts diagrams.

 

[Scrubcadet10]

The muffler may be considered part of the Mower, not the engine. Post the model of the ariens mower.
Parts Diagram

 

[spider4446]

Gravely HVZ2350.

 

[Scrubcadet10]

Coming up with this number Gravely 00391700

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Here's the parts diagram i got it from, however, the number you gave me only comes up as Gravely Gravely 915084, ZT 2350
Parts Diagram

 

[spider4446]

Thanks Scrubcadet10!