K&N vs Volant Cold Air Intake: 2011-2020 Toyota 4Runner

A cold air intake is the first bolt-on most 2011-2020 Toyota 4Runner owners reach for, and the K&N vs Volant cold air intake question is the one that lands in our Tampa shop inbox most often. Both fit the 4.0L 1GR-FE V6 that powers every fifth-generation 4Runner (a stout 270 hp and 278 lb-ft from the factory), but they take opposite approaches: K&N leaves the filter open to the air for maximum flow and sound, while Volant locks it inside a sealed box to keep hot under-hood air out. This guide puts both head-to-head — plus the wide-fitment Airaid alternative — with real specs, honest power expectations, fitment years, and pricing so you can pick the right one the first time.

K&N vs Volant: Which 4Runner Intake Should You Buy?

Buy the K&N 57-Series if you want the best value, the loudest intake growl, and a quick 60-minute install; buy the Volant Pro5 if your 4Runner sees dust, mud, and long low-speed crawling where a sealed airbox keeps the filter cooler and cleaner. That is the short answer. Both are genuine performance air intakes for the 4.0L V6, both use a washable filter you will never buy again, and both are backed by solid warranties. The difference is philosophy: an open element (K&N and Airaid) versus a sealed closed box (Volant). The rest of this comparison explains exactly when each one wins.

Open Filter vs Sealed Airbox: The Real Difference

An open-element intake exposes a high-flow filter directly to the engine bay, while a sealed closed-box intake encloses that same filter inside a lidded housing fed by the factory cold-air inlet. Open designs flow freely and pull engine-bay heat away faster at highway speed, which creates denser air once you are moving; sealed boxes shine at low speed and idle, where there is no airflow to clear heat soak and an exposed filter is simply breathing hot engine air. For a trail-driven 4Runner that spends time crawling in low range, the sealed box also keeps the filter further from splashing mud and airborne dust — though note a closed box is not a snorkel and does not raise your water-fording depth. For a 4Runner that mostly commutes and tows around Tampa, the open K&N gives you the sound and response with the simplest install.

K&N 57-Series FIPK: The Best-Value Pick

The K&N 57-9034 is the value champion of this comparison at around $240 — the cheapest of the three and our budget pick. It pairs a roto-molded intake tube with a large, exposed, oiled-cotton cone filter that K&N designs to be cleaned and re-oiled rather than thrown away. K&N's own bench numbers for this kit estimate roughly 5.8 extra horsepower (around 5400 rpm) and about 5.7 lb-ft on the 4.0L V6 — modest, as you would expect from a naturally aspirated intake, but the throttle response and the extra induction growl are what owners actually notice day to day. Installation runs about 60 minutes with hand tools.

Volant Pro5 Closed Box: The Trail-Ready Choice

The Volant Pro5 is the pick for 4Runner owners who actually wheel their truck. Its filter lives inside a fully enclosed, lidded box that draws from the factory cold-air opening, so the element stays shielded from the hot engine bay and from the dust and spray a trail kicks up. Volant's Pro5 filter is a five-layer oiled cotton-gauze element that is washable and reusable, just like the K&N (Volant also offers a dry PowerCore filter on some kits). You trade a little of the open-filter theater — the sound is more subdued with the lid on — for cooler, cleaner intake air when you are crawling. At roughly $380 it sits in the middle of this group on price, and it fits 2011-2020 4Runner 4.0L models.

Airaid Performance Intake: The Widest Fitment

If your 4Runner falls outside the K&N and Volant year coverage, the Airaid is the one to check first: its fitment runs all the way through 2023, covering the later fifth-gen trucks the other two stop short of. It is an open-element design like the K&N — a high-flow washable filter on a molded tube with a heat shield — so expect similar sound and response. At around $340 it lands between the K&N and the Volant, and it is the safe choice when you want the open-filter benefits on a 2021-2023 4Runner.

4Runner Intake Comparison: Specs & Prices Side by Side

Here is how the three intakes line up for the 4.0L V6 4Runner. All three use a washable, reusable filter; the key split is open element versus sealed box, and how far each one's fitment reaches.

What to Expect: Power, Sound, and MPG on the 4.0L V6

On a naturally aspirated 4.0L 1GR-FE making 270 hp from the factory, an intake is a response-and-sound mod, not a big power mod — and we would rather tell you that up front than sell you a fantasy dyno sheet. K&N's published estimate for the 57-9034 is about 5.8 hp and 5.7 lb-ft at the peak, and the other open kits are in the same neighborhood. What you will actually feel is crisper throttle tip-in and a deeper induction note when you get on it, especially on the open K&N and Airaid. Fuel economy is a wash for most drivers; a freer-breathing intake can help slightly at steady cruise, but a heavier right foot chasing the new sound usually cancels it out. Pair any of these with a quality exhaust or a tune later and the intake keeps earning its keep.

Installation and Maintenance

All three intakes are a straightforward driveway install — plan on roughly 60 to 90 minutes with basic hand tools and no cutting. You unbolt the factory airbox and intake tube, drop in the new tube and heat shield (or sealed box on the Volant), and clamp the filter in place. Maintenance is where the washable filter pays off: instead of buying a disposable paper element, you clean the cotton-gauze filter with the manufacturer's recommended cleaner, let it dry, and re-oil it — typically only every 30,000 to 50,000 miles under normal driving, longer if you want. The one caution on any oiled filter: use the correct amount of oil. Over-oiling can leave residue on the mass-airflow (MAF) sensor and trigger a check-engine light, so follow the kit instructions and do not drench it.