The Generac GTH990 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 |
|---|---|---|
| 0D9723 | Engine Air Filter | air_filter |
| 0D9723S | ELEMENT AIR FILTER 0D9723S Replaces 0D9723 | air_filter |
| GTH990 | GTH990 | other_service |
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.