Generac oil filters work with multiple filter types across their product lines, and the cross-reference chart helps you match your generator model to compatible filters from other manufacturers
Generac generators use several standard filter sizes and thread patterns, but the company does not make all of its own filters. When you need a replacement, you can use Generac-branded filters, or you can cross-reference your model number to find compatible filters from manufacturers like Fram, Kohler, Briggs & Stratton, and others. The cross-reference tells you which aftermarket filter will fit your specific generator without modification.
The chart works by matching your Generac model number or engine type to a Generac filter part number, then showing you the equivalent part numbers from other brands. This matters because aftermarket filters are often cheaper, more widely available at local retailers, and perform the same function as the Generac original.
Key Takeaways
- Generac generators use standard spin-on or cartridge filters that cross-reference to Fram, Kohler, Briggs & Stratton, and other common brands.
- You need your generator's model number or engine type to use the cross-reference chart accurately.
- Aftermarket filters that cross-reference to your Generac model meet the same pressure and micron specifications as the original.
- The cross-reference chart is available from Generac's parts website, your local dealer, and many aftermarket filter retailers.
How Generac filter cross-references are organized
Generac publishes cross-reference information by engine family and generator model. The most common organization method lists the Generac filter part number first, followed by equivalent part numbers from Fram, Kohler, Briggs & Stratton, Donaldson, and sometimes Wix or Motorcraft. Some charts also include the filter's micron rating and thread size so you can verify compatibility yourself.
The Generac part number usually starts with a prefix like 0F or 0G followed by five digits. Once you have that number, you can search the cross-reference table or use Generac's online parts lookup tool by entering your model number. The lookup tool is faster if you have your generator's serial number or model plate handy.
Finding your Generac model and engine information
Your generator's model number appears on a metal plate attached to the frame, usually near the fuel tank or on the side of the engine housing. The plate also lists the engine type — for example, "Generac G0070600" or "Kohler CH440." Write down both the generator model and the engine model, as some Generac generators use engines made by other manufacturers.
If the plate is worn or missing, you can often find the model number on the original paperwork, warranty card, or invoice. Once you have the model number, go to Generac's official parts website, enter it into the search bar, and navigate to the oil filter section. The site will show you the correct Generac filter part number and cross-references in one view.
Common Generac filter sizes and their cross-references
Generac's portable and standby generators most often use one of three filter types: the 0F00300S (a small spin-on filter used in portable units), the 0F00600S (a medium spin-on filter in mid-range models), and cartridge filters in larger standby units. Each has multiple cross-references depending on the manufacturer.
| Generac Part Number | Filter Type | Fram Equivalent | Kohler Equivalent | Briggs & Stratton Equivalent |
|---|---|---|---|---|
| 0F00300S | Spin-on | PH3593 | 12 050 01 | 492932 |
| 0F00600S | Spin-on | PH8170 | 12 050 01-S | 492932S |
| 0F00650S | Spin-on | PH3675 | 12 050 02 | 492932-S1 |
These are representative examples; your specific model may use a different filter. Always verify the part number on your generator's parts diagram before ordering, because using the wrong filter size can restrict oil flow or cause leaks.
Where to access the full cross-reference chart
Generac publishes its cross-reference chart in three main places. The official Generac parts website (parts.generac.com) has an interactive lookup tool where you enter your model number and see all compatible filters. Generac dealers also stock printed cross-reference sheets and can look up your model over the phone.
Third-party retailers like Amazon, eBay, and local auto parts stores often list cross-references in their product descriptions. If you buy from a retailer, verify the cross-reference against Generac's official chart to avoid ordering the wrong size. Some retailers list multiple cross-references for a single filter, which can be confusing — stick with the one that matches your Generac part number exactly.
Verifying filter compatibility before you buy
Before ordering an aftermarket filter, confirm three things: the thread size (usually 3/4-16 or 3/4-20), the overall height (measured from the mounting surface to the top of the filter), and the micron rating (typically 10 or 20 microns for engine oil filters). These specifications appear on the Generac parts diagram and on the cross-reference chart.
If you order a filter and it does not fit, do not force it onto the engine. A filter that is too tall will hit the generator's frame or shroud, and one with the wrong thread pitch will cross-thread and damage the mounting boss. Return the filter and order the correct part number instead.
Aftermarket filters versus Generac originals
Generac original filters and cross-referenced aftermarket filters meet the same pressure rating and filtration standard. The main differences are price, availability, and warranty. Generac originals are usually more expensive but may provide to fit and are backed by Generac's warranty. Aftermarket filters are often 20 to 40 percent cheaper and available at more retailers, but you lose the Generac brand assurance.
For most users, a cross-referenced aftermarket filter from a reputable brand like Fram or Kohler performs identically to the Generac original. If your generator is under warranty and you want to preserve coverage without question, use the Generac original. If your warranty has expired or you are comfortable with aftermarket parts, the cross-reference gives you cheaper options.
Frequently Asked Questions
Can I use any spin-on filter that fits the thread size?
No. Thread size is only one specification. The filter must also match the height, pressure rating, and micron rating of your Generac model. Using a filter with the wrong pressure rating can cause the bypass valve to open prematurely, allowing unfiltered oil to circulate. Always use the cross-reference chart to confirm all specifications.
Where do I find the cross-reference if my generator model is very old?
Older Generac models may not appear in the current online lookup tool. Contact a Generac dealer with your model number and serial number, and they can look it up in their archived parts catalog. You can also search the model number on eBay or vintage equipment forums, where other owners often post the correct filter part number.
What if the cross-reference shows multiple filters from the same brand?
Different Generac models use different filter sizes even within the same product line. The cross-reference chart lists all of them. Match your specific Generac part number to the row in the chart, then read across to find the aftermarket equivalent. Do not assume all Generac generators use the same filter.
Can I use a filter from a different manufacturer if it is not on the cross-reference chart?
Not safely. A filter not listed on the cross-reference has not been tested for your generator's oil pressure and flow requirements. Using an unlisted filter risks damaging the engine or voiding your warranty. Stick to the filters shown in the official cross-reference.
Do I need to change the cross-reference filter more or less often than the Generac original?
No. A cross-referenced filter has the same micron rating and flow capacity as the Generac original, so it captures the same amount of contaminant and lasts the same length of time. Follow your generator's maintenance schedule regardless of which brand of filter you use.