aFe TA-4306B-D Takeda Stage-2 Pro DRY S Intake for 2015–2017 Subaru WRX STI

The aFe TA-4306B-D Takeda Attack Stage-2 Cold Air Intake System with Pro DRY S filter delivers impressive power gains, improved throttle response, and cooler airflow for the 2015–2017 Subaru WRX STI. Designed with a CAD-modeled red cold-air scoop, ABS heat shield, and a mandrel-bent intake tube, this system outperforms the factory intake while maintaining OEM-like fitment.

Dyno testing shows increases of up to 21 horsepower and 24 lb-ft of torque, thanks to aFe’s large 7-inch oil-free Pro DRY S filter and optimized airflow path. The scoop channels fresh outside air directly into the intake, while the ABS heat shield protects the filter from engine heat to reduce heat-soak and sustain performance.

The Pro DRY S filter features three layers of progressively finer synthetic media, offering excellent airflow and filtration without the need for oiling. This makes it ideal for daily driving and light off-road use while keeping maintenance simple.

With included clamps, couplers, and hardware, installation is straightforward with no cutting or drilling required. CARB EO D-550-23 applies to some applications, allowing 50-state legal use where specified.

Key Features and Benefits

• Fits 2015–2017 Subaru WRX STI (EJ257 H4-2.5L Turbo)

• Dyno-proven gains up to 21 HP and 24 lb-ft torque

• Outflows the factory intake by 56%

• 7" tall conical Pro DRY S air filter (oil-free, 3-layer synthetic media)

• CAD-designed, cross-linked polyethylene red intake scoop for maximum cold-air flow

• ABS plastic heat shield blocks engine heat

• 2.75" mandrel-bent wrinkle black intake tube boosts airflow efficiency

• Direct bolt-on installation — no cutting or drilling

• Includes clamps, couplers, and mounting hardware

• Ideal for street and everyday performance use

• CARB EO D-550-23 applies to select vehicles

• Does not fit 2018–2019 WRX STI models

Technical Specs / Material Info

• Filter Type: Pro DRY S (oil-free, reusable, 3-layer synthetic)

• Filter Height: 7 inches

• Scoop Material: XLPE (red)

• Intake Tube: Mandrel-bent wrinkle black aluminum

• Heat Shield: ABS plastic

• Emissions: 50-state legal for qualifying applications (CARB EO D-550-23)

• Install Time: ~1 hour

Package Contents

• Red Intake Scoop

• 7" Pro DRY S Air Filter

• 2.75" Mandrel-Bent Intake Tube

• ABS Heat Shield

• Hardware, Clamps, Couplers

• aFe Warranty

Installation Info

• Direct bolt-on installation

• No cutting or modification required

• Uses stock mounting points

• Includes all installation hardware

Special Notes / Emissions Info

• Does not fit 2018–2019 WRX STI models

• Some applications are 50-state legal (see CARB EO D-550-23)

• Verify emissions compliance in your state