Short Ram Air Intake Kit For Impreza (2017-2024) 2.0L Engine

HPS Short Ram Air Intake Kit for Subaru Impreza & Crosstrek 2.0L Non-Turbo

Dyno-Proven Performance Gains | +9 WHP & +9 lb-ft Torque | Made in USA

Engineered for Maximum Performance from Your FB20 Engine

Air intake kit (Part # 827-684) offers a free-flowing 2-3/4 inch mandrel-bent aluminum tube induction system designed to produce dyno proven performance gains - increase horsepower +9 whp, torque +9 ft/lbs and improve throttle response while maintaining safe air fuel ratio. The heavy duty powder coated steel heat shield blocks out hot air from the engine for the best cooling effect. 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.

Vehicle Fitment

Compatible Models:

• 2017–2022 Subaru Impreza 2.0L Non-Turbo (FB20D Engine)
• 2018–2021 Subaru Crosstrek 2.0L Non-Turbo (FB20D Engine)

Important Note: Short Ram Air Intakes are designated as Racing, Off-Road or Show Use only. Not CARB compliant for street use in California.

Year-by-Year Compatibility

Model Year	Impreza 2.0L	Crosstrek 2.0L	Engine Code
2017	✓	✗	FB20D
2018	✓	✓	FB20D
2019	✓	✓	FB20D
2020	✓	✓	FB20D
2021	✓	✓	FB20D
2022	✓	✗	FB20D

Note: This intake is for 2.0L NON-TURBO models only. Not compatible with WRX, STI, or turbocharged variants.

Factory Engine Specifications

Subaru FB20D 2.0L Boxer-4 Engine (2017-2022 Impreza / 2018-2021 Crosstrek)

Engine Code	FB20D (Direct Injection)
Displacement	2.0L (1,995 cc / 121.8 cubic inches)
Configuration	Horizontally-Opposed "Boxer" 4-Cylinder, DOHC, 16-valve
Factory Horsepower	152 HP @ 6,000 RPM
Factory Torque	145 lb-ft @ 4,000 RPM
Bore x Stroke	84 mm × 90 mm (3.31 in × 3.54 in)
Compression Ratio	10.5:1
Fuel System	Direct Injection
Valvetrain	DOHC with Variable Valve Timing (VVT)

Dyno-Proven Performance Gains

Performance Increase with HPS Short Ram Intake

Specification	Factory (Stock)	With HPS Intake	Gain
Wheel Horsepower (WHP)	~120-125 WHP	~129-134 WHP	+9 WHP
Wheel Torque	~115-120 lb-ft	~124-129 lb-ft	+9 lb-ft
Crank Horsepower (Estimated)	152 HP	~162-165 HP	+10-13 HP
Crank Torque (Estimated)	145 lb-ft	~155-158 lb-ft	+10-13 lb-ft
Performance Gain	-	6.5-8.5% increase	Dyno-Verified

Note: WHP (Wheel Horsepower) is measured at the wheels and accounts for drivetrain loss. Crank horsepower estimates assume ~20% drivetrain loss typical for AWD vehicles.

Key Features & Benefits

Dyno-Proven Performance Gains

• +9 Wheel Horsepower (WHP) – Verified on dyno testing
• +9 lb-ft Wheel Torque – Real, measurable gains
• ~+10-13 Crank HP Estimated – Total engine output increase
• Improved throttle response – More immediate power delivery
• Maintains safe air/fuel ratio – No tuning required
• No CEL (Check Engine Light) – Designed for proper operation

Premium Mandrel-Bent 2.75" Aluminum Tube

• 2-3/4 inch diameter – Optimized for FB20 engine
• Mandrel-bent construction – Smooth, unrestricted airflow
• Lightweight aluminum alloy – Superior heat dissipation
• Replaces restrictive stock air box – Eliminates airflow bottleneck
• Polish finish available – Show-quality appearance
• Long-lasting durability – Built to last the life of your vehicle

Heavy-Duty Powder Coated Steel Heat Shield

• Blocks hot engine bay air – Maintains cooler intake temperatures
• Powder coated steel construction – Durable and corrosion-resistant
• Best cooling effect – Cooler air = denser air = more power
• Direct fit design – Mounts securely in engine bay

All-New HPS Performance Air Filter (Washable & Reusable)

• Woven cotton filter element – Traps dirt up to 5 microns
• Superior airflow without sacrificing filtration
• Washable and reusable – Save money over time
• Stainless steel mesh reinforcement – Higher resistance to dents vs aluminum
• Low pressure injection molding – Increases airflow by up to 25%
• Specially formulated synthetic oil – Creates ionic bond with mesh
• Will not affect sensors – Safe for MAF sensor
• HPS Filter Part Number: HPS-4336

Race-Proven Components

• HPS reinforced silicone hoses – High-temperature resistant
• Industrial grade 100% stainless steel T-bolt clamps – Reliable under extreme conditions
• Complete hardware kit – Everything needed for installation
• Made in the USA – Proudly designed and manufactured domestically

No-Hassle Installation

• No modifications required – Direct bolt-on installation
• No tuning required – Works with stock ECU
• Does not trigger CEL light – Properly calibrated design
• Clear installation manual – Step-by-step instructions with pictures
• Typical install time: 30-60 minutes

Performance Benefits Summary

• Increased Horsepower: Gain +9 WHP (~+10-13 crank HP) – Dyno-verified performance
• Increased Torque: Add +9 lb-ft at the wheels for better acceleration
• Improved Throttle Response: More immediate power delivery throughout RPM range
• Enhanced Acceleration: Quicker response from 0-60 and passing power
• Sporty Intake Sound: Hear your boxer engine breathe with aggressive induction tone
• Optimized Airflow: 2.75" mandrel-bent tube eliminates restrictions
• Cooler Intake Temperatures: Heat shield maintains dense air charge
• No Tuning Required: Works perfectly with factory ECU programming
• Long-Term Savings: Washable, reusable filter eliminates replacement costs
• Made in USA: Quality American engineering and manufacturing

Technical Specifications

Part Number	827-684
System Type	Short Ram Air Intake with Heat Shield
Tube Diameter	2.75 inches (2-3/4")
Tube Material	Mandrel-Bent Aluminum Alloy
Tube Finish	Polish (Other colors available)
Heat Shield Material	Heavy-Duty Powder Coated Steel
Air Filter Type	HPS Performance Filter (Washable & Reusable)
Filter Part Number	HPS-4336
Hose Material	HPS Reinforced High-Temperature Silicone
Clamp Type	100% Stainless Steel T-Bolt Clamps
Horsepower Gain	+9 WHP (Dyno-Proven)
Torque Gain	+9 lb-ft (Dyno-Proven)
Tuning Required	No
CEL Light	Does Not Trigger
CARB Compliance	NOT CARB Compliant (Racing/Off-Road Use Only)
Country of Origin	Made in USA

What's Included

• 1x HPS 2.75" mandrel-bent aluminum intake tube (polished finish)
• 1x HPS Performance washable and reusable air filter (HPS-4336)
• 1x Heavy-duty powder coated steel heat shield
• HPS reinforced high-temperature silicone hoses/couplers
• 100% stainless steel T-bolt clamps
• Complete mounting hardware (bolts, brackets, etc.)
• Detailed step-by-step installation manual with pictures

Easy Installation Guide

Installation Time: 30-60 minutes

Tools Required: Basic hand tools (socket set, screwdrivers, pliers)

Skill Level: Beginner to Intermediate (DIY-friendly)

Installation Overview

1. Disconnect negative battery terminal
2. Remove factory engine cover (if equipped)
3. Disconnect factory air intake tube and remove air box
4. Install heat shield in factory location using provided hardware
5. Install HPS aluminum intake tube with silicone couplers
6. Secure all connections with stainless steel T-bolt clamps
7. Install HPS performance air filter on intake tube
8. Double-check all connections for proper fitment
9. Reconnect battery and test engine operation
10. Enjoy improved performance!

Note: No modifications required. No tuning required. Does not trigger CEL light. Maintains proper air/fuel ratio with stock ECU.

HPS Performance Air Filter Technology

Advanced Filtration Design

• Woven Cotton Filter Element: Traps dirt particles up to 5 microns while allowing maximum airflow
• Stainless Steel Mesh Reinforcement: More durable than aluminum mesh – resists dents and damage
• Low Pressure Injection Molding: Minimizes rubber seepage onto filter element, increasing airflow by up to 25% vs high-pressure molding
• Specially Formulated Synthetic Oil: Creates an ionic bond with stainless steel mesh to attract and trap dirt particles
• Will Not Affect Sensors: Safe for MAF (Mass Air Flow) sensors – won't cause false readings or trigger CEL

Why Upgrade Your Factory Intake?

Factory Intake System Limitations

• Restrictive air box design limits airflow to engine
• Small diameter intake tubing creates unnecessary restriction
• Multiple bends and turns disrupt smooth airflow
• Paper air filter requires frequent replacement
• Conservative tuning leaves performance on the table
• Designed for noise reduction, not maximum power

HPS Short Ram Intake Advantages

• Dyno-proven gains – +9 WHP and +9 lb-ft torque verified
• 2.75" mandrel-bent tube – Smooth, unrestricted airflow path
• Heat shield included – Maintains cooler intake temperatures
• Reusable filter – Wash and reuse, never buy another filter
• Better throttle response – More immediate power delivery
• Sporty intake sound – Hear your boxer engine work
• Show-quality appearance – Polished aluminum looks premium
• Made in USA – Quality American engineering

Perfect For

• Daily Drivers: Improved throttle response for everyday commuting
• Performance Enthusiasts: Noticeable power gains you can feel
• Show Cars: Polished aluminum adds visual impact to engine bay
• Budget Builds: Affordable performance upgrade with dyno-proven results
• First-Time Modders: Easy installation, no tuning required
• Track/Autocross: Every bit of power helps on competitive runs

Filter Maintenance & Care

Cleaning Instructions

1. Remove filter from intake tube
2. Spray filter with specialized filter cleaner (available separately)
3. Let cleaner soak for 10-15 minutes
4. Rinse filter from inside out with low-pressure water
5. Shake off excess water and allow to air dry completely
6. Apply filter oil evenly to filter element
7. Let oil absorb for 20 minutes
8. Reinstall filter on intake tube

Cleaning Frequency: Every 10,000-15,000 miles or as needed based on driving conditions

Important Legal Notice

Racing, Off-Road, or Show Use Only: Short Ram Air Intakes are designated as Racing, Off-Road or Show Use only. This product is NOT CARB compliant and is not legal for street use in California or other states with similar emissions regulations. Check your local laws before purchase.

Complement Your Intake with Other Mods

For maximum performance gains from your FB20 engine, consider pairing this short ram intake with:

• Cat-Back Exhaust System: Improve exhaust flow for better breathing
• ECU Tune/Reflash: Optimize fuel and timing maps (can add 15-25 HP)
• Header/Downpipe: Reduce exhaust restriction at the source
• Performance Spark Plugs: Improve ignition efficiency
• Lightweight Pulley: Reduce rotational mass for quicker rev response

Made in USA Quality

Proudly designed and manufactured in the United States by HPS Performance, a leading name in automotive performance parts. Every component is engineered to exacting standards and tested for reliability under the most extreme driving conditions. When you choose HPS, you're choosing American quality, innovation, and customer support.

Transform Your Subaru's Performance

Experience the difference that proper airflow makes. This HPS short ram intake system delivers dyno-verified, measurable performance gains that you'll feel every time you press the accelerator. With +9 wheel horsepower, +9 lb-ft of wheel torque, and dramatically improved throttle response, your Impreza or Crosstrek will feel more responsive and engaging to drive.

The combination of mandrel-bent aluminum tubing, a heavy-duty heat shield, and the all-new HPS Performance filter ensures you're getting maximum power while maintaining engine protection. Plus, the washable, reusable filter means you'll save money over the life of your vehicle while enjoying the aggressive intake sound that makes every drive more exciting.

Bolt-on installation in 30-60 minutes. No tuning required. No CEL light. Dyno-proven +9 WHP and +9 lb-ft torque gains. Includes heat shield, reusable filter, and all hardware. Made in USA. Transform your FB20 engine today.