The Generac 070185E is a spin-on oil filter designed for Generac portable generators and some standby models
The Generac 070185E is a replacement oil filter made by Generac for their own equipment. It screws onto the engine the same way most car oil filters do — you turn it by hand until it seats, then tighten it a quarter turn more. This filter traps dirt, metal particles, and other debris that circulate through your generator's engine oil, keeping the oil cleaner and the engine protected longer.
If you own a Generac portable generator or certain standby models, this is the filter Generac recommends you use during routine oil changes. Using the correct filter matters because a filter that does not fit properly can leak, or one that is the wrong type can restrict oil flow and damage the engine.
Key Takeaways
- The 070185E is a spin-on filter that screws directly onto your Generac generator engine and should be replaced during each oil change.
- This filter fits specific Generac models, so you should verify your generator's model number matches before ordering to avoid buying the wrong part.
- You can find the 070185E through Generac's official parts website, authorized dealers, or major online retailers that sell generator parts.
- Changing the filter yourself takes about 15 minutes and requires only a filter wrench and a drain pan to catch old oil.
Which Generac generators use the 070185E filter
The 070185E fits a range of Generac portable generators and some smaller standby units, but not all models use this filter. Generac makes dozens of generator models across different power levels and designs, and each one is engineered to use a specific filter.
To confirm whether the 070185E is correct for your generator, locate your model number on the unit itself — it is usually on a label on the side or back of the housing. Then check Generac's official parts catalog or your owner's manual. If you cannot find the manual, Generac's website has a parts lookup tool where you enter your model number and it shows you the exact filter and other maintenance parts you need.
Using a filter that does not match your model can cause leaks or poor oil circulation, so this step is worth the few minutes it takes.
How to replace the 070185E during an oil change
Replacing a spin-on oil filter is straightforward and does not require special skills. First, run your generator for a minute or two to warm the oil slightly — warm oil drains faster and the filter comes off more easily. Then turn off the engine and let it cool for a few minutes so you do not burn yourself.
Place a drain pan underneath the filter to catch the old oil that will spill out. Using a filter wrench (a straightforward metal band tool that grips the filter), turn the old filter counterclockwise until it comes free. Unscrew it by hand the rest of the way and set it aside. Wipe the filter mounting surface on the engine with a clean cloth to remove any old rubber or debris.
Take your new 070185E filter and explore a thin coat of fresh oil to the rubber gasket on top — this helps create a good seal and makes removal easier next time. Screw the new filter on by hand until the gasket touches the engine, then turn it another three-quarters of a turn. Do not use the wrench to tighten it; hand-tight is correct. Tighten it too much and you will have trouble removing it later.
Where to buy the Generac 070185E
You can order the 070185E from several sources. Generac's official online parts store sells it directly, and authorized Generac dealers in your area usually stock it or can order it quickly. Major online retailers that sell generator parts, including Amazon and eBay, carry it as well.
Prices vary slightly between sellers, but the filter typically costs between $15 and $30. Shipping is usually fast if you order from a major retailer, though buying in person from a local dealer means you have it when ready and can ask questions if you are unsure about installation.
When you order, double-check that the listing specifies the 070185E part number — do not rely on a generic description like "Generac oil filter" because that could refer to several different filters.
How often to replace the 070185E
Generac recommends changing the oil and filter in most portable generators every 50 to 100 hours of use, depending on the model and the conditions where you run it. If you use your generator in dusty or dirty environments, change it more often — every 50 hours. If you run it in clean conditions and use it less frequently, every 100 hours is usually fine.
If your generator sits unused for months at a time, change the oil and filter before you start it up again, even if it has not reached the hour limit. Old oil breaks down over time and loses its ability to protect the engine.
What happens if you use the wrong filter
Using a filter that does not fit your Generac model can cause several problems. A filter that is too large or too small may not seal properly, allowing unfiltered oil to bypass the filter and circulate through the engine. This means dirt and metal particles stay in the oil and wear out engine parts faster.
A filter that restricts oil flow too much can starve the engine of lubrication, causing overheating and damage. Some aftermarket filters are not designed for the oil pressure and flow rates of Generac engines, so they perform poorly even if they physically fit.
Using the correct Generac part — in this case, the 070185E for models that call for it — ensures your generator runs reliably and lasts longer.
Frequently Asked Questions
Can I use a different brand of oil filter instead of the Generac 070185E?
Some aftermarket filters may fit physically, but Generac designs its engines around specific filter specifications. Using a non-Generac filter risks poor filtration or flow problems. Stick with the 070185E or contact Generac to confirm an alternative is safe for your model.
How do I know if my filter is installed correctly?
After hand-tightening the filter three-quarters of a turn past contact, run the generator for a minute and check underneath for leaks. If oil drips from where the filter connects to the engine, turn the filter another quarter turn. If it still leaks, remove it and check that the rubber gasket is clean and seated properly.
What should I do with the old filter after I remove it?
Old oil filters contain used oil and should not go in regular trash. Take it to a recycling center, an auto parts store that accepts used filters, or a hazardous waste collection event in your area. Many retailers that sell filters also accept used ones for recycling.
Is the 070185E filter the same as filters for other generator brands?
No. Generac filters are engineered for Generac engines and are not interchangeable with filters from Honda, Champion, or other brands, even if the physical size looks similar. Always use the filter specified in your owner's manual.