HPS Performance 837 Series Air Intake Kit (Part # 837-573) for 2015-2020 Subaru WRX STI 2.5L Turbo offers a free-flowing 2-3/4 inch mandrel-bent aluminum tube induction system by relocating the HPS Performance Air Filter outside of the engine compartment to deliver the coolest air inlet temperature. Compared to the traditional intake setup, this HPS Performance 837 Series cold air intake kit delivers cooler air with more oxygen, which translates into a more intense explosion in the vehicle combustion chamber to produce dyno-proven performance gains: an increase of +19.4 whp in horsepower, +20.5 ft-lbs in torque, and improved throttle response, all while maintaining a safe air-fuel ratio. The included installation manual has clear pictures and instructions to guide the installer throughout the whole process. The kit does NOT require tuning and does not trigger the CEL light. No modification is required during installation. HPS's lightweight mandrel-bent aluminum alloy tube replaces the stock restrictive air box and optimizes airflow with excellent heat dissipation and long-lasting durability. The HPS Performance 837 Series cold air intake kit (aka CAI) features race-proven reinforced silicone hoses and industrial-grade 100% stainless steel t-bolt clamps, ensuring reliability, even during the most extreme driving conditions. Proudly made in the United States, the All-New HPS Performance Air Filter is designed with performance in mind, delivering excellent filtration without sacrificing airflow.
Key Features
Delivers dyno-proven performance gains: +19.4 whp horsepower, +20.5 ft-lbs torque, and improved throttle response. Fine-tuned by HPS Performance to deliver maximum performance output through the top-end power band.
2-3/4 inch mandrel-bent aluminum tube replaces the stock restrictive air box and optimizes airflow with excellent heat dissipation and long-lasting durability.
Relocates the HPS Performance Air Filter outside of the engine compartment to deliver the coolest air inlet temperature for the best cooling effect.
HPS Performance signature race-proven high-temperature reinforced silicone hoses.
HPS Performance industrial-grade 100% stainless steel t-bolt clamps.
HPS Performance Air Filter (Washable and Reusable).
Easy-to-follow step-by-step installation manual with clear pictures and instructions to guide the installer throughout the entire process.
No modification is required during installation.
This air intake kit fits 2015-2020 Subaru WRX STI 2.5L Turbo.
Vehicle Application
2020 Subaru WRX STI 2.5L H4 Turbo (Base, Kanrai Edition, Limited, Sport, Sport-tech, STI)
2019 Subaru WRX STI 2.5L H4 Turbo (Base, Limited, S209, Sport, Sport-tech, STI)
2018 Subaru WRX STI 2.5L H4 Turbo (Base, Limited, Sport, Sport-tech, STI, Type RA)
2017 Subaru WRX STI 2.5L H4 Turbo (Base, Limited, Sport, Sport-tech)
2016 Subaru WRX STI 2.5L H4 Turbo (Base, Limited, Series.HyperBlue)
2015 Subaru WRX STI 2.5L H4 Turbo (Base, Launch Edition, Limited)
Included in the Kit
HPS Performance aluminum intake tube
HPS Performance heavy-duty steel heat shield
HPS Performance Air Filter (Washable and Reusable)
HPS Performance 100% Stainless Steel T-Bolt Clamps
HPS Performance High-Temperature Reinforced Silicone Coupler
Mounting hardware
Installation Instruction
Product Information
Product Type: 837 Series Performance Air Intake Kit
Dyno-proven performance gains: Horsepower 19.4 Whp, Torque 20.5 Ft/lbs
Intake Tube Material: Aluminum
Intake Tube Size: 2-3/4 inch
Warranty: 2 Years
Street Legal In All US States: No
California Restricted: Not legal for sale or use in California
TUV Approved (Europe): No
Weight: 7 lbs
Shipping Box Dimension: 24 inch x 12 inch x 10 inch
CA Residents:
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov