Specifications
Ratings spec sheet not in our library yet — see the documents below.
Maintenance & consumables
for the Generac GTH990 OHVI Series| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Air Cleaner Filter Primary | 0E3557 | Amazon eBay $17.44 PartsGeek | ||
| Fuel filter | Fuel Filter Donaldson | ×1 | 0F0106 | Amazon eBay $10.99 PartsGeek | |
| Oil filter | Oil Filter Black 75mm | 070185B | Amazon eBay $12.95 PartsGeek |
Common questions
What engine does the Generac GTH 990 use?
The Generac GTH 990 is powered by the Generac GTH990 OHVI Series engine.
Parts
8| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 070185B | FILTER, OIL BLACK 75mm LONG | 1 | Oil filter | Amazon eBay $12.95 PartsGeek |
| 0D6313 | FILTER, FUEL | 1 | Fuel filter | Amazon eBay $9.26 PartsGeek |
| 0D9723 | Engine Air Filter | 1 | Air filter | Amazon eBay $17.45 PartsGeek |
| 0D9723S | ELEMENT AIR FILTER 0D9723S Replaces 0D9723 | Air filter | PartsGeek | |
| 0E7585 | SPARK PLUG | 2 | Spark plug | Amazon eBay $15.99 PartsGeek |
| 086516 | VALVE, EXHAUST | 2 | Service part / kit | PartsGeek |
| 0C2229 | VALVE, INTAKE | 2 | Service part / kit | PartsGeek |
| GTH990 | GTH990 | Service part / kit | PartsGeek yemparts $130.85 |
Service, wear & replacement parts referenced for this model and its engine — confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.
Available documents
Brochure — 0170580SBY (Generac)Engine spec — 0F6913 (Generac)Engine spec — 0F6914 (Generac)Engine spec — EngineStandardFeatures (Generac)Engine spec — GTH990Specification (Generac)Reference — AboutGeneracEnginesParts manual — 0F6917 (Generac)Parts manual — 0J9882 (Generac)Service manual — 0F6923 (Generac)Service manual — generac-gth990-service-manual (Generac)