Description
The genuine Generac G059402 Air Filter helps protect your compatible liquid-cooled standby generator. This OEM air-cleaner element helps capture dust, dirt, and other airborne particles before they enter the engine’s intake system.
Replacing a dirty or damaged air filter supports proper airflow, efficient combustion, and dependable generator operation. This filter is used primarily on select Generac liquid-cooled generators equipped with 1.5L, 1.6L, 2.4L, or 2.5L engines.
Why Choose the Generac G059402 Air Filter?
When you need a Generac air-cleaner element for routine upkeep, a genuine OEM part keeps your maintenance on the original Generac part number. This Generac standby generator air filter is suitable for scheduled maintenance or for replacing a damaged filter. It is also a practical choice for owners who want a clear, documented part number to match against their owner’s manual.
Product Features
- Genuine Generac OEM replacement part
- Helps prevent dirt and debris from entering the engine
- Supports proper airflow and efficient engine operation
- Designed for select liquid-cooled automatic standby generators
- Suitable for scheduled maintenance or replacement of a damaged filter
- May be included in certain Generac scheduled maintenance kits
Compatible Applications
This liquid-cooled generator air filter is commonly used with select:
- 1.5L liquid-cooled engines
- 1.6L liquid-cooled engines
- 2.4L liquid-cooled engines
- 2.5L liquid-cooled engines
- Generac and Guardian automatic standby generators
The filter may also fit select generators sold under the Centurion, Siemens, Carrier, Honeywell, Watchdog, and Bryant brands. Compatibility depends on the generator’s complete model and serial number.
Generac parts documentation identifies 059402 as an air-cleaner element for certain 1.6L applications, while additional liquid-cooled applications vary by model and production series.
What’s Included
- 1 Generac G059402 Air Filter (air-filter element)
Packaging may vary. Products supplied in bulk packaging may not arrive in retail packaging.
Product Information
- Brand: Generac
- Part number: G059402
- Previous part number: 059402
- Product type: Engine air-filter element
- Condition: New
- Quantity: 1
- Application: Select liquid-cooled standby generators
Maintenance Guidance
Inspect and replace the air filter according to the maintenance schedule in your generator owner’s manual. Generators operating in dusty or debris-filled environments may require more frequent inspection and replacement.
Before you order the Generac G059402 Air Filter, confirm the required part number using your generator’s owner’s manual or parts diagram. If compatibility is uncertain, provide the generator model and serial number for verification.
Frequently Asked Questions
What is the Generac G059402 Air Filter used for?
The Generac G059402 Air Filter is an engine air-filter element for select liquid-cooled automatic standby generators. It captures dust, dirt, and other airborne particles before they reach the engine’s intake system, which supports proper airflow and dependable operation.
Which engines is this filter commonly used with?
It is commonly used with select 1.5L, 1.6L, 2.4L, and 2.5L liquid-cooled engines, including Generac and Guardian automatic standby generators. Fitment varies by model and production series, so always check your complete model and serial number.
Does this filter replace part number 059402?
Yes. G059402 replaces the previous part number 059402. Compatibility still depends on your generator’s complete model and serial number, so please verify before ordering.
Order the Right Air Filter for Your Generator
Keeping your standby generator ready starts with regular maintenance. Check your owner’s manual, confirm your model and serial number, and then order the Generac G059402 Air Filter if it matches your generator. If you are unsure about fitment, send us your generator model and serial number and we will help verify compatibility.




