The Kohler CH18 engine line groups 2 variant designations. Parts and fitment are pooled here so a cross-reference found on one variant surfaces for the whole family.
| Part # | Description | Category |
|---|---|---|
| 25 083 01-S | HDAC Primary Air Filter | air_filter |
| 25 083 04-S | HDAC Safety Filter | air_filter |
| 25 755 20-S | Cleanout Kit (Black) | cleanout_kit |
| 24 083 02-4 | Oil Cooler, CH25 | oil_cooler |
| 24 083 05-4 | Oil Cooler, CH26 | oil_cooler |
| 24 083 03-4 | Paper Element, Heavy-Duty Air Cleaner | paper_element |
| KO3226 | Starter Service Kit | starter |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.
Leads compiled from supplier catalogs across the family’s variants; verify the exact part for your variant and serial number.