Replaces Kohler Muffler 237550, 237550-S: Cub Cadet Muffler 393840-R91 Go to amazon.com Related posts Best mufflers for generators FeatureSold on Amazon DescriptionReplacement muffler for Kohler part number 237550, 237550-S, Cub Cadet 393840-R91, IH-393840-R91