Sold out
Cobb 15-21 Subaru WRX SF Intake System - Black-COBB-COBB745120
Cobb 15-21 Subaru WRX SF Intake System - Black-COBB-COBB745120
Cobb 15-21 Subaru WRX SF Intake System - Black-COBB-COBB745120
Cobb 15-21 Subaru WRX SF Intake System - Black-COBB-COBB745120
Cobb 15-21 Subaru WRX SF Intake System - Black-COBB-COBB745120
Cobb 15-21 Subaru WRX SF Intake System - Black-COBB-COBB745120
Cobb 15-21 Subaru WRX SF Intake System - Black-COBB-COBB745120
Cobb 15-21 Subaru WRX SF Intake System - Black-COBB-COBB745120
Cobb 15-21 Subaru WRX SF Intake System - Black-COBB-COBB745120
Click to zoom in

Cobb 15-21 Subaru WRX SF Intake System - Black

COBB
COBB745120
700424681280
Cold Air Intakes
Out of stock
$ 545.00

SKU: B745120   |   UPC: 700424681280

Cobb 15-21 Subaru WRX SF Intake System - Black

The Cobb SF Intake System replaces the factory airbox on 2015-2021 Subaru WRX models with a high-flow aluminum intake tube and oversized filter for improved airflow and quicker throttle response. This black powder-coated setup delivers measurable power gains on dyno tests while maintaining smooth operation with stock tuning. Direct bolt-on installation fits all WRX sedan trims without modifications.

Key Features

  • Large Double-Cone Filter: Synthetic dry ProTuner filter provides 99% filtration efficiency with massive surface area for unrestricted airflow even at high RPMs.
  • 3-Inch Aluminum Intake Tube: Smooth, mandrel-bent tubing in black powdercoat finish reduces restrictions and heat soak for consistent performance.
  • Integrated Heat Shield: Powder-coated shield blocks engine bay heat to keep intake air temperatures low and power delivery steady.
  • High-Quality Silicone Couplers: Durable reinforced silicone connects seamlessly to throttle body and turbo inlet for reliable seal under boost.
  • Stainless Steel Clamps: Heavy-duty clamps ensure secure, vibration-resistant mounting for long-term durability.

Product Notes

  • Designed for stock or tuned applications dyno-tested gains up to 12 wheel horsepower on Stage 1 maps.
  • Clean filter every 15,000-30,000 miles based on driving conditions for peak performance.

Installation Notes

  • Professional installation recommended.
  • Complete install takes 45-60 minutes with basic hand tools no cutting or permanent modifications required.
  • Includes all necessary hardware compatible with stock airbox delete and Cobb Accessport.

This Part Fits

Year Make Model Submodel
2015-2021 Subaru WRX Base
2015-2021 Subaru WRX Limited
2015-2021 Subaru WRX Premium
2015-2017 Subaru WRX Sport

Why Choose Cobb?

  • Over 25 years specializing in Subaru performance parts with direct OEM collaboration.
  • Dyno-proven designs backed by real-world testing on VA-chassis WRX platforms.
  • Precision-engineered components using aircraft-grade aluminum and premium hardware.

Frequently Asked Questions

  • Q: Will this fit 2015-2021 Subaru WRX STI models?
    A: No, designed exclusively for non-STI WRX sedan models (VA chassis); STI requires separate part number.
  • Q: What filter media and finish does it use?
    A: Features a reusable dry synthetic ProTuner filter (washable) and black powder-coated aluminum tube for corrosion resistance and style.
  • Q: What is the warranty and install process?
    A: Backed by Cobb's limited lifetime warranty on defects bolt-on install with included instructions, no tune required for basic gains.

Shipping & Handling

  • Method: UPS Ground or FedEx Ground
  • Availability: In stock - ships same or next business day
  • Packaging: Secure foam-padded box, 28" x 14" x 10"
  • Weight: 8.2 lbs shipping weight

Request For Information

Have questions about Cobb 15-21 Subaru WRX SF Intake System - Black? Fill out the form below and we'll get back to you by the next business day.
Air Intake Systems

Air Intake Systems

Air intake systems for Hellcat, Trackhawk, TRX, HEMI, and import performance platforms are stocked at Black Ops Auto Works. Shop cold air intakes, short ram intakes, air boxes, intake elbows, mass air flow sensors, scoops, snorkels, and silicone couplers for street cars, trucks, Jeeps, and supercharged Mopar builds. Every intake system is filterable by vehicle platform, engine, and intake style so the correct part ships the first time. Black Ops Auto Works carries 4,427 air intake SKUs across cold air intakes, short ram intakes, and supporting components. What This Category Covers An air intake system pulls outside air into the engine and filters it before combustion. Upgrading the factory intake with a cold air intake, short ram intake, or carbon fiber system can improve airflow, throttle response, induction sound, and horsepower potential on compatible applications. Cold Air Intakes vs Short Ram Intakes Cold air intakes route the filter away from engine bay heat for cooler, de...

View Air Intake Systems Products
COBB

COBB

COBB Tuning parts for turbocharged performance platforms are stocked at Black Ops Auto Works. Shop the Accessport ECU programmer, cold air intakes, cat back exhaust systems, and supporting hardware engineered for Subaru WRX and STI, Ford Focus ST and RS, Ford F-150 EcoBoost, Mazdaspeed3 and 6, Nissan GT-R, Porsche, BMW, and Volkswagen platforms. Every product is filterable by year, make, model, and trim so the correct part ships the first time. Black Ops Auto Works carries 372 COBB SKUs across tuning, intake, and exhaust categories. What This Brand Covers COBB Tuning built its reputation on the Accessport, one of the most widely used ECU flash tools in the aftermarket, and has expanded into intakes, exhausts, downpipes, and supporting hardware for a range of turbocharged platforms. The catalog centers on a defined group of import and Euro performance vehicles rather than a single brand family. Brand Focus COBB Tuning parts are engineered primarily for Subaru, Ford, Mazda, Nissan...

View COBB Products
Cold Air Intakes

Cold Air Intakes

Shop cold air intakes, short ram intakes, closed-airbox intake systems, replacement air filters, intake tubes, and MAF housings from K&N, AEM, aFe Power, Airaid, S&B Filters, Injen, Roush, Volant, Corsa, Mishimoto, HPS Performance, Cobb Tuning, JLT, Vararam, Steeda, and other performance intake brands. Find full open-element cold air intakes, sealed-airbox systems, dry and oiled air filters, replacement drop-in filter panels, MAF sensor housings, and complete intake tube kits. Cold air intakes for domestic muscle, sport-compact tuners, diesel trucks, off-road 4x4, Euro performance, and modern sport SUVs Mustang, Camaro, Challenger, Charger, F-150, Silverado, Ram, Tundra, Tacoma, 4Runner, Wrangler, Bronco, Cummins, Duramax, Power Stroke, WRX/STi, Civic Type R, GR86, Supra, GR Corolla, BMW M2/M3/M4, Golf R, and hundreds of additional platforms. Filter by vehicle, intake style (open element, closed airbox, short ram, tube kit), filter media (oiled cotton, dry synthetic), tun...

View Cold Air Intakes Products
Military & First Responder Discounts

Military & First Responder Discount Program

Black Ops Auto Works proudly honors active duty military, veterans, National Guard, reserves, police officers, firefighters, and EMTs with an exclusive 5% discount on all performance parts and carbon fiber upgrades. Verify instantly and start saving today.

Learn More & Apply

Your cart

×