Product Highlights
- 3" mandrel-bent aluminum tubing and reusable high-flow cotton air filter for optimized air flow.
- Relocates HPS Performance Air Filter outside of the engine compartment to deliver the coolest air inlet temperature.
- Improves acceleration and throttle response with dyno-proven gains of 29.5 horsepower and 27 lb-ft. of torque.
- Heavy duty powder coated steel heat shield designed to block out radiant heat from the engine.
- Converts to shortram air intake setup.
- Includes a high-temperature and high-pressure resistant reinforced silicone coupler and stainless steel T-bolt clamps.
- Easy bolt-on installation using simple hand tools.
- Essential performance upgrade for 3rd Gen 2008-2014 Subaru Impreza WRX STI 2.5L H4 Turbo.

Vehicle Application
2014 Subaru WRX STI 2.5L H4 Turbo
2014 Subaru Impreza 2.5L H4 Turbo (WRX STI, WRX STI Limited)
2013 Subaru WRX STI 2.5L H4 Turbo
2013 Subaru Impreza 2.5L H4 Turbo (WRX STI, WRX STI Limited)
2012 Subaru WRX STI 2.5L H4 Turbo
2012 Subaru Impreza 2.5L H4 Turbo (WRX STI, WRX STI Limited)
2011 Subaru Impreza 2.5L H4 Turbo (WRX STI, WRX STI Limited)
2010 Subaru Impreza 2.5L H4 Turbo (WRX STI, WRX STI Special Edition)
2009 Subaru Impreza WRX STI 2.5L H4 Turbo
2008 Subaru Impreza WRX STI 2.5L H4 Turbo

Features and Benefits
HPS Performance 837 Series 2-pieces cold air intake kit (Part # 837-778) for 3rd Gen 2008-2014 Subaru Impreza WRX STI 2.5L Turbo features free-flowing, 3 inch mandrel-bent aluminum tubing and is dyno-proven to deliver an impressive 29.5 horsepower and 27 lb-ft of torque. Experience improved throttle response and quicker acceleration, all while maintaining a safe air-fuel ratio. To maximize performance, the high-flow, washable air filter is strategically relocated outside the engine compartment, drawing in cold air. A heavy duty, powder coated steel heat shield further isolates the filter from engine heat. This bolt-on upgrade replaces your restrictive stock air intake hose and air box with a smoother, two-piece aluminum intake designed for optimal airflow, excellent heat dissipation, and lasting durability. Engineered for reliability even under extreme driving conditions, the kit includes high-temperature resistant silicone hoses and industrial-grade 100% stainless steel T-bolt clamps. Best of all, no tuning or additional modifications are required.

Included in the kit
- HPS Performance aluminum intake tubes
- 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 Couplers
- Mounting hardware
- Digital Installation Instruction

Product Information
- Product Type: 837 Series Performance Air Intake Kit
- Part Number: 837-778
- Intake Tube Material: Aluminum
- Intake Tube Size: 3 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: 15 lbs
- Shipping Box Dimension: 24 inch x 14 inch x 14 inch