Best Intake For Wrx: 10 Kits Compared by Fit and Features

#1 · Best Overall

1. Mishimoto MMAI-WRX-15BP

• Weight: 2.27 kg

Best for: 2015+ WRX stock-duct fit.

Why it ranks #1: Listed for 2015-and-newer WRX models, it claims up to 33 whp and 30 wtq on a stock tune and works with the stock intake duct.

Retaining the stock intake duct is the defining practical feature of this Mishimoto kit for the 2015+ Subaru WRX. The listing also says installation takes under an hour, giving owners a stated route to an intake change without replacing that duct or planning a longer installation window.

Mishimoto reports dyno-proven gains up to 33 whp and 30 wtq on a stock tune, with larger stated gains on a more aggressive tune. The stock-duct compatibility keeps the existing duct in the installation arrangement, while a wire-reinforced lower induction hose is described as resisting collapse under suction and boost. Together, those details speak to fit and operation rather than just peak figures. The under-an-hour installation claim is a useful workflow point, though actual setup depends on the vehicle and installer.

Skip it if you need a kit listed for 2022+ WRX models; Mishimoto MMAI-WRX-22MWBK specifically lists that generation and stock-tune dyno testing.

A 2015+ WRX owner wanting to retain the stock duct and complete a stated under-an-hour intake installation is the natural buyer. Note that the higher advertised gains are tied to an aggressive tune.

Listed on Amazon as: Mishimoto – MMAI-WRX-15BP Subaru WRX Performance Air Intake, Polished, 2015+

#2 · Best Newer-Model Fit

2. Mishimoto MMAI-WRX-22MWBK

• Weight: 10.8 lb

Best for: 2022+ WRX bolt-on airflow.

Why it ranks #2: Direct fit for newer WRX models, with claimed gains up to 13.3 hp and 16.6 lb-ft on a stock tune and a powder-coated airbox.

A direct-fit specification for the 2022+ Subaru WRX pairs with dyno-tested gains of up to 13.3 horsepower and 16.6 lb-ft on the stock tune. That combination makes this Mishimoto kit relevant to owners seeking an airflow upgrade without adding a tuning step to the stated installation plan.

The kit includes an aluminum intake pipe, CNC-machined aluminum MAF sensor housing, high-flow oiled filter, and powder-coated airbox. Together, those named parts replace the stock air-filter arrangement with a performance intake while retaining a dedicated housing. Mishimoto reports dyno testing for safe air/fuel ratios without tuning, which supports stock-tune use as described. Its aggressive intake tone under acceleration is another operating change to weigh, and the stated direct fit is for 2022+ WRX models.

Skip it if you have a 2015–2020 WRX STI; Rtunes Racing HI-SB-01CK is listed for that STI range and includes a reusable washable filter.

This suits 2022+ WRX owners who want a specified direct-fit kit, reported stock-tune gains, and a more aggressive acceleration sound. Its listed fitment does not cover earlier WRX generations.

Listed on Amazon as: Mishimoto MMAI-WRX-22MWBK Cold Air Intake Kit for Subaru WRX 2022+

#3 · Best Older-Model Gains

3. Mishimoto MMAI-STI-08WRD

• Weight: 3 lb

Best for: 2008–2014 no-tune power.

Why it ranks #3: For WRX and STI applications, it claims up to 25 whp and 25 wtq without a tune and includes an aluminum pipe with an air straightener.

Mishimoto states gains up to 25 whp and 25 wtq without a tune for this 2008–2014 WRX/STI intake, making its stock-tune performance claim the central draw. An air straightener and CNC-machined MAF housing are included in the aluminum-pipe configuration.

The aluminum intake pipe pairs an air straightener with a CNC-machined MAF housing, named components that shape the intake and sensor-housing arrangement. Mishimoto says the filter has 16% more surface area than stock, connecting the larger filtering area to its stated bolt-on power goal. The listing describes installation in under an hour and gains up to 25 whp and 25 wtq without a tune, giving buyers both a workflow estimate and a stock-tune performance claim. Fitment is specified for 2008–2014 Subaru WRX/STI.

Skip it if you drive a 2022+ WRX; Mishimoto MMAI-WRX-22MWBK lists direct fitment for that generation and dyno testing without tuning.

This is for 2008–2014 WRX or STI owners seeking a stated no-tune power gain and an installation claimed to take under an hour. The listed model years define its fit boundary.

Listed on Amazon as: Mishimoto – MMAI-STI-08WRD Performance Cold-Air Intake, Wrinkle-Red, compatible with Subaru WRX/STI 2008-2014

#4

4. K&N 69-8006TTK

• Weight: 3.64 kg

Best for: Dyno-report-focused WRX upgrade.

Why it ranks #4: Its stated WRX fitment covers a narrower model range, and K&N reports dyno testing, a high-flow filter, and a one-million-mile warranty.

Wheel-based dyno testing with reports included gives this K&N intake a concrete performance focus, while its less restrictive airflow path is intended to send more cool, oxygen-rich air to the engine. It is specifically listed for 2015–2017 Subaru WRX models, a useful boundary for owners narrowing their choices.

The less restrictive intake path is intended to increase cool, oxygen-rich airflow, connecting its core hardware change to the stated horsepower and torque benefit. K&N also says its testing uses wheel-based dynamometers and includes reports with each system, giving buyers documentation alongside the performance claim. The product listing identifies 2015–2017 WRX compatibility, so its scope is clear but narrow; owners of other model years should not treat this listing as a match. The intake is also described as allowing a more pronounced engine sound.

Skip it if you own a WRX outside the listed 2015–2017 range; Mishimoto MMAI-WRX-22MWBK is listed for 2022+ WRX models.

For owners of a 2015–2017 Subaru WRX seeking a dyno-documented airflow upgrade and a more audible engine note, this K&N is a focused option; its stated model-year range is the key boundary.

Listed on Amazon as: K&N Cold Air Intake System: High-Flow Air Filter, Increase Performance & Acceleration: Compatible with 2015-2017 Subaru: WRX. 69-8006TTK

#5 · Best Sealed Airbox

5. aFe Power Takeda 56-70064R

Best for: 2022–2026 sealed-intake monitoring.

Why it ranks #5: Listed for newer WRX models, its sealed design has a sight window for filter checks and a Pro 5R oiled cotton filter.

A clear sight window lets owners monitor the filter condition without opening the sealed Takeda airbox, a useful maintenance detail on this intake listed for Subaru WRX 2022–2026 H4-2.4L models. Its massive Pro 5R oiled-cotton filter prioritizes airflow within that sealed arrangement.

The sealed airbox is customized for the vehicle’s engine bay, giving the intake a contained layout rather than an exposed filter arrangement. Its clear sight window supports quick visual filter checks, while the massive Pro 5R oiled-cotton filter is specified for maximum airflow. aFe Power also describes dyno-proven performance and improved throttle response, tying the intake design to operating benefits without supplying a specific gain figure here. The stated application is WRX 2022–2026 H4-2.4L, so this is not a universal WRX fit.

Skip it if you want stated stock-tune gain figures for a 2022+ WRX; Mishimoto MMAI-WRX-22MWBK lists up to 13.3 HP and 16.6 lb-ft.

This is for 2022–2026 WRX H4-2.4L owners who value a sealed airbox and visible filter checks. The listing describes dyno-proven performance but supplies no specific power-gain figure.

Listed on Amazon as: aFe Power #56-70064R Takeda Sealed Intake for Subaru WRX 22-26 H4-2.4L (t)

#6

6. K&N 69-8001TWR

• Weight: 5 lb

Best for: Reusable-filter airflow upgrade.

Why it ranks #6: The listing identifies WRX STI applications and a mandrel-bent aluminum tube, plus a washable, reusable filter and a no-tune claim.

A mandrel-bent aluminum intake tube and washable, reusable High-Flow filter define this K&N system’s hardware approach, while the listing states that it needs no tune. K&N also connects the airflow change to horsepower and torque gains and a growl on acceleration that quiets at speed.

The mandrel-bent tube is described as increasing airflow volume, and the washable, reusable filter supports ongoing use without treating the filter as disposable. K&N says its intake systems provide a less restrictive path for cool, oxygen-rich air and reports dyno testing for horsepower and torque gains. The sound profile is also specifically described: the engine growls on acceleration and returns to quiet once at speed. The supplied listing identifies a WRX STI H4 2.0/2.5L application, so verify that this stated scope matches the vehicle.

Skip it if you need a 2022+ WRX application; aFe Power Takeda 56-70064R is listed for WRX 2022–2026 H4-2.4L models.

This K&N suits an owner whose WRX STI matches the listed H4 2.0/2.5L application and who wants a reusable filter, no-tune claim, and audible acceleration. The application wording is the fit boundary.

Listed on Amazon as: K&N Cold Air Intake System: High-Flow Air-Filter, 69-8001TWR

#7

7. R&L Racing Blue Intake Kit

• Weight: 8 lb

Best for: Simple-tool 2008–2014 fit.

Why it ranks #7: A listed fit for older WRX and STI applications, it includes a washable, reusable filter and the mounting hardware, hoses, and reducers.

The listing says this R&L Racing intake installs with simple tools and needs no additional parts after purchase, making the supplied installation package its clearest practical advantage. It is specified for 2008–2014 Subaru Impreza WRX/STI 2.5L Turbo applications.

A T-306 aluminum intake pipe and washable, reusable air filter form the core of the kit, while the supplied description says mounting hardware, vacuum hoses, and reducers are included. That component list supports a simpler parts-gathering workflow, consistent with the claim that no additional parts are needed after purchase. The intake is described as helping the engine draw cooler air for throttle response and horsepower. Fitment is limited by the listing to 2008–2014 WRX/STI 2.5L Turbo models.

Skip it if you own a 2015–2020 WRX STI; Rtunes Racing HI-SB-01CK lists that generation and includes a heat shield with its intake kit.

This suits a 2008–2014 2.5L Turbo WRX or STI owner seeking a reusable filter and supplied mounting pieces for a simple-tool installation. Its stated generation and engine range set the boundary.

Listed on Amazon as: R&L Racing Blue Cold Air Intake Kit + Filter 08-14 For Subaru Impreza WRX/STI 2.5L Turbo

#8

8. Rtunes Racing HI-SB-01CK

Best for: Reusable-filter STI installation.

Why it ranks #8: Designed for specified WRX STI applications, this kit has an aluminum pipe, reusable dry filter, heat shield, and a no-cutting installation.

A direct-bolt-on layout that requires no cutting or drilling makes this Rtunes Racing kit the straightforward installation choice in its listed 2015–2020 WRX STI 2.5L Turbo range. The aluminum pipe, cone filter, and heat shield replace the factory airbox with a specified intake configuration.

The kit combines an aluminum intake pipe, heat shield panel, washable reusable cone filter, couplers, clamps, and hardware. That package supplies the listed components for replacing the factory airbox, while the no-cutting-or-drilling installation description points to a less invasive workflow. The filter is a dry, reusable type according to the supplied facts and can be washed with soap and water, then rinsed. Rtunes says the pipe helps draw cold air and improve throttle response and horsepower; the stated fit is limited to 2015–2020 STI 2.5L Turbo.

Skip it if you drive a 2022+ WRX rather than a 2015–2020 STI; aFe Power Takeda 56-70064R lists the 2022–2026 WRX 2.4L.

This fits the stated 2015–2020 WRX STI 2.5L Turbo buyer seeking a no-cut installation and a washable dry filter. The STI-only application boundary is central to choosing it.

Listed on Amazon as: Cold Air Intake Kit w/Heat Shield for 15-20 WRX STI 2.5L Turbo (Black)

#9

9. LIUWEIRACING LWC-DR01-BK-RD

Best for: Older WRX heat-shield kit.

Why it ranks #9: Its fitment covers several older WRX and STI applications and it includes a heat shield, but its horsepower and torque figures are seller claims.

A supplied heat shield distinguishes this LIUWEIRACING intake from a bare filter-and-pipe setup, while fitment spans specified 2002–2007 WRX and STI engine configurations. The listing also describes smooth, wide tubing paired with a high-flow filter, connecting the intake layout to its claimed airflow gains.

The stated fitment separates 2002–2005 WRX 2.0L turbo, 2006–2007 WRX 2.5L turbo, and 2004–2007 WRX STI 2.5L applications, giving buyers specific generation and engine boundaries. A heat shield accompanies the high-flow filter and smooth, wide tubing; the listing links that airflow arrangement to claimed horsepower, torque, and fuel-efficiency improvements. Those gains are manufacturer claims, not supplied dyno results. The heat shield is a practical part of the intake package, but exact application matters across the listed configurations.

Skip it if you own a 2015–2020 WRX STI; Rtunes Racing HI-SB-01CK lists that later range and includes a washable reusable filter.

This kit suits owners whose older WRX or STI engine matches one of its stated year-and-displacement groups and who want a heat shield included. Its split fitment makes engine-year matching essential.

Listed on Amazon as: Cold Air Intake System + Heat Shield Compatible with 2002 2003 2004 2005 2006 2007 Subaru Impreza WRX STI 2.5L 2.0L

#10

10. anwenchapey DR01-BK-RD

Best for: Reusable-filter older WRX setup.

Why it ranks #10: It is listed for older WRX and STI applications, with a washable filter and polished aluminum, but has a shorter stated warranty and fewer fitment details.

A washable, reusable cone filter gives this intake a maintenance feature that can reduce the need for filter replacement, while its stated fit covers Subaru Impreza WRX STI models from 2002–2007 with 2.0L or 2.5L engines. That specific range makes it an older-generation option.

The T-304 polished aluminum construction is described as lightweight and intended for heat dissipation and durability, providing a metal-pipe alternative to the factory plastic intake. A high-flow cone filter is washable and reusable, so owners can clean and return it to service rather than routinely replacing the filter. The manufacturer claims a 7–10% horsepower increase, but the supplied information does not provide dyno-test details. Compatibility is stated for 2002–2007 Impreza WRX STI 2.0L and 2.5L applications.

Skip it if you drive a 2008–2014 WRX or STI; Mishimoto MMAI-STI-08WRD lists that generation and states dyno-proven gains without a tune.

This is aimed at owners of a 2002–2007 Impreza WRX STI with a listed 2.0L or 2.5L engine who value a reusable filter. Its power claim lacks supplied dyno documentation.

Listed on Amazon as: Cold Air Intake System Induction Kit Compatible With Subaru Impreza WRX STI 2002-2007 2.5L 2.0L