Description
Keep your compatible air-cooled standby generator operating with clean intake airflow using this two-pack of genuine Generac 0J8478S Air Filters. Each OEM filter captures dirt, dust, and other airborne contaminants before they can enter the engine.
Replacing clogged or damaged air filters can help support efficient combustion, reduce engine strain, and maintain dependable generator operation. Having two filters provides a convenient spare for future scheduled maintenance.
Product Features:
- Genuine Generac OEM air filters
- Package contains two filters
- Helps prevent dirt and debris from entering the engine
- Supports proper airflow and efficient engine operation
- Designed for select air-cooled home standby generators
- Suitable for scheduled maintenance and repair
- Supersedes the earlier Generac 0J8478 air filter
Package Includes:
- 2 Generac 0J8478S air-filter elements
Air-filter housings, oil filters, spark plugs, oil, and other maintenance parts are not included.
Commonly Compatible Generator Models:
6055, 6098, 6103, 6244, 6250, 6258, 6551, 6729, 7034, 7035, 7036, 7037, 7038, 7039, 7040, 7041, 7042, 7043, 7045, 7048, 7049, 7077, 7078, 7141, 7142, 7145, 7146, 7163, 7173, 7174, 7175, 7176, 7177, 7178, 7189, 7209, 7210, 7218, 7219, 7291.
Compatibility depends on the generator’s engine and production configuration. The complete model and serial number should be checked before ordering.
Product Information:
- Brand: Generac
- Part number: 0J8478S
- Previous part number: 0J8478
- Product type: Engine air-filter element
- Quantity: 2
- Condition: New
- Application: Select air-cooled standby generators
Generac parts documentation identifies 0J8478S as the air-filter element used in compatible air-cooled generator applications.
Maintenance Guidance:
Inspect and replace the air filter according to the maintenance schedule in your generator owner’s manual. Filters may require more frequent inspection or replacement when the generator operates in dusty, dirty, or debris-filled conditions.
Shut down the generator, allow the engine to cool, and follow all safety and installation instructions in the owner’s manual before servicing it.








