K&N 33-5064 Washable High-Flow Engine Air Filter

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Product guide

K&N 33-5064 Washable High-Flow Engine Air Filter

High-Flow: K&N 33-5064 is a washable replacement engine air filter listed for select Subaru vehicles. Its reusable design and drop-in installation may suit owners who prefer cleaning a filter over replacing disposable ones, provided fitment is confirmed for their exact vehicle.

At a glance

Washable and reusable design intended to replace a disposable engine air filter.
The listing describes four layers of treated cotton gauze intended to trap contaminants.
K&N claims cleaning is needed every 75,000 miles under normal highway driving conditions, based on 15,000 miles driven per year.
Listed for select Subaru Ascent, Crosstrek, Forester, Impreza, Legacy, Outback, WRX and XV applications. Exact year coverage varies by model.
Manufacturer describes the filter as pre-treated for installation in the factory air box.

Price

$55.19Save 20%

Reference price: ~~$68.99~~

Price checked: Nov 13, 2026

View offer

Often bought together

K&N LIFETIME Cabin Air Filter: Washable, Clean Air for your Cabin, VF2054 | Compatible with 2006-2026 Isuzu/Mazda/Lexus/Subaru: (See Product Description for Select Models)

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K&N Air Filter Cleaning Kit: Aerosol Filter Cleaner and Oil Kit; Restores Engine Air Filter Performance; Service Kit-99-5000, Multi

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Pros and cons

Pros

Reusable construction can reduce reliance on disposable replacement filters if you are willing to clean and maintain it.
Customer feedback reports easy installation and fit, alongside positive comments about cleaning and durability.
The claimed long cleaning interval may reduce routine service frequency under normal highway driving conditions.

Cons

Unlike a disposable filter, this washable design requires periodic cleaning and maintenance.

Technical specifications

12 specifications

Identity
Brand	K&N
Model	33-5064
Product type	Replacement Engine Air Filter
Fit type	Vehicle Specific Fit

Dimensions and installation
Form factor	Rectangular
Dimensions listed	11.57"L x 10.43"W x 1.73"H
Weight listed	1.2 pounds
OEM part numbers	16546AA150-SUBARU,16546AA16A-SUBARU

Construction and maintenance
Filter media	Multiple layers of premium cotton gauze
Cleaning interval claim	75,000 miles under normal highway driving conditions
Installation claim	Pre-treated and ready to drop into your factory air box

Warranty
Warranty description	1,000,000 Miles

What to know before buying

Fitment is vehicle-specific. Confirm the exact year, model and OEM part-number match before ordering. The 75,000-mile cleaning interval applies only under normal highway driving conditions, and warranty terms have limitations. K&N’s horsepower, airflow and fuel-economy benefits are manufacturer claims, not guarantees for a particular vehicle.

What’s in the box

Included

Air filter

Who is it for?

A good fit for

Subaru owners whose exact vehicle is listed as compatible and who prefer a reusable engine air filter.
Drivers comfortable cleaning a filter according to its maintenance needs rather than replacing it with a disposable one.

Less suited to

Buyers who want a disposable filter with no cleaning or reuse maintenance.
Anyone unable to confirm that model 33-5064 fits their exact vehicle and factory air box.

K&N 33-5064 Washable High-Flow Engine Air Filter · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.8 / 5 · 1,424 ratings

5 stars90%90%
4 stars6%6%
3 stars2%2%
2 stars0%0%
1 star2%2%

Customer feedback is strongly positive overall, with reports of good fit, straightforward installation, easier cleaning and perceived durability. Some customers describe improved mileage or smoother acceleration, but those are individual experiences rather than assured outcomes. For owners who confirm the fit, the reported installation and maintenance experience may matter most, since the washable design trades disposable replacements for periodic cleaning.

Positive themes

Customers report that the filter fits well and is easy to install.
Feedback describes the filter as easy to clean and durable.

Frequently asked questions

Which vehicles does the listing say this filter fits?

It lists select Subaru Ascent, Crosstrek, Forester, Impreza, Legacy, Outback, WRX and XV vehicles. Model-year coverage differs, so verify the exact vehicle and part-number match before buying.

How often does K&N say it should be cleaned?

The listing claims cleaning every 75,000 miles under normal highway driving conditions, based on an average of 15,000 miles driven per year.

Is this a disposable engine air filter?

No. The listing describes it as washable and reusable, so it requires cleaning rather than routine replacement as a disposable filter.

Does the listing guarantee better fuel economy or power?

No. Increased airflow, horsepower, acceleration and improved mileage are presented as claims or customer-reported experiences, not guaranteed results for an individual vehicle.