The HPS Performance 837 Series air intake kit for 2015-2020 Subaru STI 2.5L Turbo offers a free-flowing 2-3/4 inch mandrel-bent aluminum tube induction system by relocating HPS Performance Air Filter outside of the engine compartment to deliver the coolest air inlet temperature.

Compared to the traditional intake setup, 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 - increase horsepower +19.4 whp , torque +20.5 ft/lbs and improve throttle response while maintaining 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 CEL light. No modification is required during the installation. HPS light weight mandrel-bent aluminum alloy tube replaces the stock restrictive air box and optimizes the airflow with excellent heat dissipation and long lasting durability. 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 which ensures 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 - increase horsepower +19.4 whp , torque +20.5 ft/lbs and improve throttle response. Fine-tuned by HPS Performance to deliver the maximum performance output through the top end power band.
- 2-3/4 inch mandrel-bent aluminum tube replaces stock restrictive air box and optimizes the airflow with excellent heat dissipation and long lasting durability.
- Relocates 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 whole process.
- No tuning is required 
- This air intake kit fits 2015-2020 Subaru WRX STI 2.5L Turbo.

Vehicle Application
2015-2020 Subaru WRX STI 2.5L H4 Turbo (Base, Kanrai Edition, Limited, Sport, Sport-tech, STI)


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
• Weight: 7 lbs