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🏁 Unleash your Bronco’s true power with K&N’s lifetime high-flow filter!
The K&N High-Flow Original Lifetime Engine Air Filter (E-0634) is a premium, washable replacement filter designed specifically for the 2021 Ford Bronco. Featuring advanced 4-layer cotton gauze media, it boosts horsepower and acceleration while providing superior contaminant protection. Engineered for durability with a lifetime warranty, it requires cleaning only every 75,000 miles, saving you money and reducing environmental waste. Easy to install and proudly made in the USA, this filter is a smart upgrade for performance-driven Bronco owners.





| Asin | B09NDZT78F |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #10,398 in Automotive (See Top 100 in Automotive) #146 in Automotive Replacement Air Filters |
| Brand Name | K&N |
| Customer Reviews | 4.7 4.7 out of 5 stars (351) 4.7 out of 5 stars |
| Fit Type | Vehicle Specific Fit |
| Included Components | Air Filter |
| Item Type Name | Replacement Air Filter |
| Item Weight | 1.3 Pounds |
| Manufacturer | K&N Engineering, Inc. |
| Manufacturer Part Number | E-0634 |
| Manufacturer Warranty Description | 1,000,000 Miles/10 Year |
| Model Number | E-0634 |
| Oem Equivalent Part Number | Ford FA2022 |
| Product Grade | Replacement Part |
| Shape | Round |
| Unit Count | 1.0 Count |
| Upc | 024844393050 |
User
Excellent
Great fit and easy installation. Very good stock upgrade.
User
Easy install
Easy to remove the paper factory version and install this one. Fitment for me was spot on. The cost was good as well compared to buying from brick and mortar locations. I haven’t tested for fuel performance or HP increases yet as I don’t pay that much attention, but others have said they’ve seen improvements.
User
Great in my Bronco
Works and fits great in my 2025 2.7 Bronco
User
Helps with fuel mileage and performance!
Gained 3 MPG between the filter and ford performance exhaust. Gotta let an engine breathe.
User
Fits 6 gen Bronco
This is a quality filter and really is a huge step up from the OEM filter. I live in an agricultural area that has a lot of dust, and quit a few unpaved rural roads. So, I need to change out filters frequently. This filter will pay for itself rather quickly. I had no issue with fitment as some have had. It looks like K&N has resolved those issues. I have used K&N products for almost 30 years and fi d that they are a quality focused company that produces great products for reasonable prices.
User
Perfect fit - easy install
Got this for my 2021 Ford Bronco 2.3L. Fit like a glove and install was 5 mins. Does not feel like there’s a difference but I’m sure it’s doing a bit better hp and mpg wise. Not sure why other posts saying it’s a loose fit. The stock filter sits the same way there is no clamps holding this on. It just slips on.
User
Mejora el rendimiento y la respuesta de aceleración
Perfecto para bronco
User
Stick With Brands You Know
Trusting in the K & N brand. First non-oiled filter purchase. Time shall tell, but I’m optimistic. A good replacement for my 23 Bronco.
User
Not good for gulf countries
Not good for gulf countriesbbery bad f9r desert drive
User
Ranger 2.7 air filter.
This filter is exactly what I needed. It fits perfectly easy to install all of about 15 minutes and that includes cleaning the air box.
User
Filtre K&N
Exactement comme prévu
User
Passt für Ranger 2025 PHEV !!!
Passt perfekt für Ranger 2025 2,3 PHEVSpürbar besserer Luftdurchsatz und etwas geringerer Verbrauch messbar!
User
Everest
Perfect for Everest 2024 2.3l
Trustpilot
2 days ago
2 months ago