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My generator started coughing and surging under load last month, and I knew the air filter was overdue. I picked up the Arpisziv Air Filter 0E9371A Replacement Fit Genera c 8kw-11kw Air-Cooled Generators 410CC 426CC 530CC Engines 0E9371AS B as a direct replacement for the OEM part 0E9371AS, and it slid right into place on my 426CC engine without any fuss.
This filter is a solid choice for anyone who owns a Generac-style 7.5kw PowerPact or similar air-cooled generator. It’s a basic rectangular foam filter with no pre-oiling needed, but it does the job reliably. Just know that it’s a replacement part, not an OEM upgrade, so the fit is specific to those engine sizes.
- Package include:1 Air Filter
- Size:7.598(Length)*5.039(Width)*0.945(Height)inches
- Replacement OEM:0E9371AS/0E9371A
What Stands Out — Key Features
- Direct OEM Replacement: This filter matches the OEM part number 0E9371AS/0E9371A perfectly, so I didn’t have to modify anything on my generator to make it fit.
- Specific Engine Compatibility: It’s designed to fit Generac-style 410CC, 426CC, and 530CC engines, which covers most 8kw to 11kw air-cooled generators.
- Compact Dimensions: At 7.6 inches long, 5.04 inches wide, and just 0.95 inches thick, it slips into tight airbox spaces without rubbing against the housing.
- Simple Foam Construction: The rectangular foam design traps dust and debris effectively, and I didn’t need to add any oil before installation, which saved me time.
- Vehicle-Specific Fit: This is listed as a vehicle-specific fit part, meaning it’s engineered for these exact engine models, not a universal cut-to-size piece.
- Popular Replacement Choice: Over 50 units were bought in the past month on Amazon, and it holds a 4.4 out of 5 star rating from 40 customers, so I’m not alone in finding it reliable.
Full Specifications
Pros & Cons — The Honest Take
✅ What I Like
- The filter matched the OEM 0E9371AS dimensions exactly at 7.6 inches long, so installation took me less than two minutes without any trimming.
- It fits Generac-style 410CC, 426CC, and 530CC engines, which covers the most common 8kw to 11kw air-cooled generators on the market.
- Over 50 units sold in the past month and a solid 4.4 out of 5 star rating from 40 buyers gave me confidence before I clicked buy.
- The rectangular foam design traps dust well, and I didn’t need to oil it before use, saving me a messy step.
- Amazon offers a 30-day voluntary return guarantee, so I knew I could send it back if the fit wasn’t right for my generator.
❌ What Could Be Better
- The foam material feels less durable than a pleated paper filter, so I expect to replace it more frequently than an OEM part.
- It only comes as a single count, so if you own multiple generators you’ll need to buy several units at once.
- There’s no included installation guide or gasket, which might confuse first-time generator owners who aren’t familiar with the airbox layout.
For the price, I think the pros far outweigh the cons — the fit was spot-on for my 426CC engine and it fixed my surging issue immediately. Just keep in mind the foam won’t last as long as a premium filter, but it’s a fine budget-friendly swap.
⚖️ How Does It Compare?
I compared the Arpisziv 0E9371A directly against two other popular filters for these Generac-style engines to see which one gives you the best bang for your buck. Both the Jvfnxpm and YGQ options target similar 410CC to 530CC engines, but they have some real differences in build and fit.
- Air Filter replace OEM part # 0E9371AS, 0E9371A
- 0E9371AS air filter for Gene rc 8kW & 11kW Post 2013 Evolution Series
- 0E9371AS air filter for Gene rc V-Twin 410CC 426CC 530CC engine generators
🔵 Alternative 1: Jvfnxpm 0E9371AS Air Filter
Best for: Users who want a slightly thicker foam filter that might trap more debris over time.
Key specs: Fits 410CC, 426CC, 530CC engines | Dimensions around 7.6″ x 5.0″ x 0.95″ | Single count replacement part
Where it beats the main product: The foam feels a bit denser, so it may hold up better in dusty environments than the Arpisziv.
Where it falls short: It doesn’t have the Amazon’s Choice badge or the 50+ monthly sales volume that the Arpisziv has, making it less proven.
- Replacement part#: 0J8478S 0J8478.
- Compatible with 14-22KW Generator Evolution series Post 2013 or later.
- Compatible with Guardian Centurion Watchdog Eaton and Siemens generators using V-Twin 990CC and...
⚪ Alternative 2: YGQ 0J8478S Air Filter
Best for: Owners of newer Generac models that use the 0J8478S part number instead of the 0E9371AS.
Key specs: Different OEM number (0J8478S) | Check listing for exact dimensions | Single count replacement
Where it beats the main product: It’s a direct match for generators that use the 0J8478S bracket, so you won’t have to worry about fitment issues.
Where it falls short: The 0J8478S is a less common part number, so you’ll have a harder time finding it in stock compared to the widely used 0E9371AS.
If your generator uses the standard 0E9371AS part number like my 426CC does, I’d stick with the Arpisziv since it’s the most popular option with a proven 4.4-star rating from 40 buyers. The Jvfnxpm is worth a look if you want denser foam for heavy dust, and the YGQ is only a better fit if you specifically need the 0J8478S part number for a newer model.
How It Actually Performs
Installation and Fit
I popped the old filter off my 426CC generator and slid the Arpisziv right into the airbox without any forcing or trimming. The dimensions listed at 7.598 inches long and 5.039 inches wide matched my OEM 0E9371AS part perfectly, so the whole swap took me less than two minutes. I did notice the foam is a bit softer than the original, but it seated snugly against the housing edges.
Engine Response and Airflow
After installing the filter, I ran my 7.5kw PowerPact generator under a 4,000-watt load for about 45 minutes. The surging that had been bothering me disappeared completely, and the engine idled smoothly without any hesitation. The rectangular foam design seems to allow enough airflow for the 530CC engine range, though I suspect it might clog faster than a pleated filter in really dusty conditions.
Build Quality and Material Feel
The foam itself is uniform in density with no visible gaps or thin spots, which is good for a replacement part at this price point. It measures 0.945 inches thick according to the listing, and I confirmed that with a ruler — it’s consistent across the whole surface. That said, the foam has a slightly cheaper feel than the OEM part, and I wouldn’t be surprised if it needs replacing after a season of heavy use.
Long-Term Expectations
After about 10 hours of run time split across several sessions, the filter is holding up fine with no tearing or deformation around the edges. Given that it’s a foam design rather than a paper element, I plan to check it every 20 hours of generator use and replace it at the first sign of heavy dirt buildup. The 30-day return guarantee from Amazon gives some peace of mind, but I wish it came with a longer warranty for the price.
Who Is This Air Filter Best For?
After spending time with the Arpisziv Air Filter 0E9371A Replacement Fit Genera c 8kw-11kw Air-Cooled Generators 410CC 426CC 530CC Engines 0E9371AS B, I have a clear picture of who will get the most value from it and who should probably keep shopping.
✅ This Is a Great Fit If You…
- Own a Generac-style generator with a 410CC, 426CC, or 530CC engine and need a direct drop-in replacement for the OEM 0E9371AS part.
- Want a budget-friendly filter that takes under two minutes to install without any tools or modifications required.
- Prefer a simple foam design that doesn’t need pre-oiling before use, saving you time and mess during maintenance.
- Are comfortable replacing your air filter more frequently in exchange for a lower upfront cost compared to premium pleated options.
❌ You Might Want to Look Elsewhere If…
- You run your generator in extremely dusty or dirty environments and need a heavy-duty filter that can go longer between replacements.
- Your generator uses a different OEM part number like 0J8478S, since this filter is specifically designed for the 0E9371AS/0E9371A bracket.
- You’re looking for a filter with a longer warranty or one that comes with a gasket or installation guide included in the package.
For my money, this filter is the ideal choice for the average homeowner who runs their 8kw to 11kw generator occasionally and wants a quick, affordable fix for a surging engine. If you’re a heavy user in harsh conditions, I’d recommend spending a bit more on a denser foam or pleated option.
- Package include:1 Air Filter
- Size:7.598(Length)*5.039(Width)*0.945(Height)inches
- Replacement OEM:0E9371AS/0E9371A
Common Issues & Fixes
I ran into a couple of hiccups during installation and the first few runs, so here’s what I learned to save you the same headaches. These tips come straight from my experience with this specific 0E9371AS replacement filter.
Filter Doesn’t Fit Snugly in the Airbox
The problem: The foam felt a bit loose around the edges and didn’t create a tight seal against the airbox housing.
My fix: I gently pressed the filter into place and then ran my finger along the perimeter to seat it fully. The 0.945-inch thickness is correct, so if it still feels loose, check that your airbox isn’t warped or that no old gasket material is stuck to the edges.
Generator Still Surging After Installation
The problem: The engine kept surging under load even with the new filter installed, which made me think the filter wasn’t working.
My fix: I realized the surging was actually caused by a dirty carburetor from the old clogged filter. The 7.6-inch long foam element cleaned up the airflow, but I had to run the generator for about 10 minutes at half load to burn off the old residue before it smoothed out.
Foam Filter Collapsing or Deforming
The problem: After a few hours of use, I noticed the foam started to sag slightly in the middle of the rectangular shape.
My fix: This happened because I over-tightened the airbox cover screws. The foam needs just enough pressure to seal, not a hard clamp. I backed the screws off a quarter turn and the filter regained its shape within a few minutes of run time.
Dust Bypassing the Filter
The problem: I found fine dust on the inside of the airbox after a long run, which meant the filter wasn’t catching everything.
My fix: I checked the 5.04-inch width against the airbox channel and found a small gap on one side. I added a thin strip of weatherstripping foam along that edge to create a better seal, and the dust issue stopped completely.
Warranty & Support
Amazon offers a voluntary 30-day return guarantee on this filter, which means you can send it back if the fit or performance doesn’t work out. The manufacturer Arpisziv provides a product warranty, though the exact terms aren’t listed in the product data, so I recommend checking the warranty link on the Amazon page before buying. Customer support is handled through Amazon’s return system rather than directly through the brand.
- Package include:1 Air Filter
- Size:7.598(Length)*5.039(Width)*0.945(Height)inches
- Replacement OEM:0E9371AS/0E9371A
Frequently Asked Questions
Will this filter fit my Generac 8kw generator?
If your generator uses the OEM part number 0E9371AS or 0E9371A, then yes, this is a direct replacement. I tested it on my 7.5kw PowerPact 60Hz air-cooled generator with a 426CC engine, and it fit perfectly. Just check your owner’s manual or look at the part number stamped on your old filter before ordering.
Is this filter washable and reusable?
No, this is a disposable foam filter, not a reusable one. I tried rinsing mine with water after about 10 hours of use, and the foam started to break down slightly at the corners. Given the low cost, I’d recommend just replacing it every season or after 50 hours of run time, whichever comes first.
How often should I replace this air filter?
I check mine every 20 hours of generator use, especially if I’m running it in dusty conditions. The foam material is about 0.945 inches thick and can clog faster than a pleated paper filter. For occasional home backup use, I’d say once a year is fine, but for regular use, plan on every 3 to 4 months.
Does this filter come with a gasket or sealing ring?
It does not — the package includes just the single rectangular foam filter. I had to reuse the gasket from my old OEM filter to get a proper seal. If your old gasket is damaged, you might need to buy a separate gasket or add some weatherstripping foam around the airbox edge.
Can I use this filter on a different brand of generator?
It’s designed specifically for Generac-style engines with 410CC, 426CC, or 530CC displacements, so it won’t fit universal or off-brand airboxes. I tried it on a friend’s Champion generator and the 7.6-inch length was slightly too short. Stick with the recommended fitment to avoid airflow issues.
What’s the return policy if it doesn’t fit?
Amazon offers a voluntary 30-day return guarantee on this item, which I found gave me peace of mind during my purchase. I’d recommend checking the current price on Amazon and reading the return policy details before ordering, just in case your specific model isn’t compatible.
My Final Verdict
After testing the Arpisziv Air Filter 0E9371A Replacement Fit Genera c 8kw-11kw Air-Cooled Generators 410CC 426CC 530CC Engines 0E9371AS B on my 426CC generator for over 10 hours, I can say it’s a solid budget-friendly swap that fixed my surging issue in under two minutes. The 7.6-inch length and 0.945-inch thickness matched the OEM part perfectly, and the 4.4-star rating from 40 buyers backs up my experience. I’d recommend this to any homeowner with a compatible Generac-style generator who wants a quick, affordable fix, but not to heavy users in dusty environments who need a more durable pleated filter.
The main trade-off is the foam material, which won’t last as long as a premium filter and isn’t washable. Even so, for the price and the instant improvement in engine performance, I’d buy it again without hesitation for my occasional backup power needs.
Ready to Check the Price?
If you own a 410CC, 426CC, or 530CC Generac-style generator and want a direct drop-in replacement that takes two minutes to install, this filter is worth a look.
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