K&N High-Flow Engine Air Filter for Subaru 2016–2026 (33-5064) — Washable Lifetime, Pre-Oiled

A washable, reusable K&N High-Flow engine air filter designed to boost airflow and deliver long-term performance for compatible 2016–2026 Subaru vehicles.

This K&N High-Flow Original Lifetime Engine Air Filter (33-5064) replaces your factory paper element with a premium, multi-layer cotton gauze unit engineered to increase airflow, protect your engine, and reduce recurring filter waste. It’s pre-oiled and ready to install, fits into the stock airbox with no modifications, and is backed by K&N’s limited lifetime warranty. Tested on high-demand race circuits and refined for everyday driving, this filter is intended to deliver measurable breathing improvements without complicated tuning.

How much performance improvement can I expect?

The K&N high-flow media is engineered to allow more air into the intake than a stock paper filter, which can translate to better throttle response and potential horsepower gains depending on your vehicle and conditions. Results vary by engine, so the actual increase is influenced by your Subaru’s setup and driving style.

• High-flow cotton gauze media increases airflow versus many disposable filters
• Multi-layer construction balances airflow and contaminant capture
• Track-proven design developed and tested under demanding conditions

What maintenance does the lifetime filter need?

K&N filters are washable and reusable, removing the need for frequent replacements. Under normal highway driving, cleaning is suggested roughly every 75,000 miles, but conditions such as dusty roads may require more frequent attention.

• Pre-oiled and ready to install; simple drop-in replacement
• Clean and re-oil using K&N service kit following the cleaning interval
• Inspect during routine service or after heavy off-road use for optimal protection

Will this fit my Subaru and is installation difficult?

This K&N unit is engineered to fit directly into the factory air box of a wide range of Subaru models from 2016–2026, including Ascent, Crosstrek, Forester, Impreza, Legacy, Outback, WRX, and XV where specified. Installation requires no modifications and can typically be completed in minutes with basic tools.

• Direct-fit replacement for compatible Subaru air boxes
• No cutting, trimming, or special tuning required for most installations
• Comes pre-treated so it’s ready to run right away

How does this filter impact cost and the environment?

Because the K&N filter is washable and designed to last the life of the vehicle, it reduces the number of disposable filters sent to landfills and lowers long-term filter expenses. The upfront cost is offset over time by fewer replacements and consistent performance.

• Reusable design replaces many disposable filters over vehicle lifetime
• 10-year/million-mile limited warranty offers long-term assurance
• Made in the USA using durable materials for extended service life

Who is this for: Drivers of 2016–2026 Subaru models who want a simple, durable upgrade to their engine intake—whether for improved throttle feel, long-term cost savings, or reducing waste from disposable filters. This product suits daily commuters, spirited drivers, and owners who perform routine vehicle maintenance and prefer direct-fit, low-hassle upgrades. If you expect heavy dust exposure, factor in more frequent cleaning intervals to keep filtration performance at its best.