Click to zoom in
SKU: 22WRAOS-D
Killer B Motorsport Performance Dual Catch Can AOS for 2022-2025 Subaru WRX
Elevate your 2022-2025 Subaru WRX’s performance and longevity with the Killer B Motorsport Performance Dual Catch Can Air/Oil Separator (AOS), SKU: 22WRAOS-D. Engineered with precision and unmatched expertise, this state-of-the-art dual catch can system stands head and shoulders above all competitors, offering superior oil vapor separation, effortless installation, and a sleek, OEM-quality design. Protect your engine, maintain peak performance, and experience why this AOS is the top choice for Subaru WRX enthusiasts worldwide.
Why Choose the Killer B Performance Dual Catch Can AOS?
The Killer B Dual Catch Can AOS is the gold standard for protecting your Subaru WRX’s FA24 DIT engine. Unlike traditional baffled systems that restrict airflow, Killer B’s innovative vortex separation technology efficiently captures oil vapor from crankcase gases without compromising flow rates. This ensures cleaner intake air, reduced carbon buildup on valves, and consistent octane levels for optimal engine performance. Designed specifically for high-performance track and street use, this AOS outperforms alternatives like IAG’s V3 AOS by offering a tailored solution for the FA24 engine’s unique PCV system, delivering unmatched reliability and efficiency.
Key Features & Benefits
- Superior Oil Separation: Captures nearly 100% of oil vapor, preventing intake and valve contamination for a cleaner, more efficient engine.
- Vortex System Advantage: Unlike baffled designs, the vortex technology maximizes flow while efficiently separating oil, ensuring no performance loss.
- Lightweight & Compact: 3D-printed from durable, automotive-grade plastic, this AOS clears OEM strut braces and intercoolers for a seamless fit.
- OEM-Like Aesthetics: Sleek, factory-inspired design enhances your engine bay’s look while maintaining functionality.
- Quick & Easy Installation: Installs in approximately 30 minutes with minimal tools, thanks to pre-crimped hoses and a pre-installed firewall bracket.
- Track-Proven Performance: Dual configuration (firewall and front of intake manifold) optimized for high-performance driving, collecting oil effectively even under intense conditions (e.g., ~1mL from manifold side after 600 miles of highway use).
- Easy Maintenance: Simple-to-drain design ensures hassle-free upkeep, keeping your WRX in top shape.
What’s Included in Your Purchase
- 2 Killer B Performance Dual Catch Can AOS Units: One mounted on the firewall, one in front of the intake manifold.
- Pre-Crimped Hoses: High-quality hoses with Killer B logo for a professional finish.
- Pre-Installed Firewall Bracket: Simplifies mounting and ensures a secure fit.
- PCV Valve Adapter: Threads seamlessly into the OEM PCV system.
- Barb Adapter: Connects to the engine block for easy integration.
- Mounting Hardware: Includes 4 hose clamps, 2 nuts, and zip ties for a complete, secure installation.
- Detailed Installation Instructions: Clear, step-by-step guide specifying all required tools (basic hand tools only).
- Part Number: 22WRAOS-D
Vehicle Fitment
- Year: 2022, 2023, 2024, 2025
- Make: Subaru
- Model: WRX (VB Chassis)
- Engine: Turbo FA24 DIT
- Note: Not compatible with right-hand drive (RHD) vehicles without a custom mounting solution (not included).
Why Killer B is the Best Choice
Killer B Motorsport has a proven track record of delivering high-performance Subaru parts, backed by years of R&D and real-world testing. Unlike competitors, this AOS was specifically designed for the FA24 engine, addressing its unique PCV characteristics for superior performance over universal or EJ-engine-based systems. With a focus on quality craftsmanship, made-in-the-USA durability, and a design tested on turbo DIT platforms (including Porsche 911s), Killer B offers unmatched reliability for both street and track enthusiasts. Don’t settle for less—choose the AOS trusted by high-performance builders and racers alike.
Engine
Engine parts and engine bay upgrades for Dodge, Jeep, RAM, Chrysler, Chevrolet, Ford, Toyota, Nissan, Subaru, and Honda vehicles are stocked at Black Ops Auto Works. Shop oil catch cans, supercharger pulleys, thermostats, radiators, cooling parts, throttle bodies, intake manifolds, headers, ignition coils, spark plugs, sensors, gaskets, fuel pumps, valve covers, engine covers, billet cap covers, and full engine bay dress-up parts for HEMI, Hellcat, Trackhawk, Redeye, Demon, Scat Pack, RAM TRX, LS, LT, Coyote, EcoBoost, K-Series, and 2JZ builds. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 14,298 engine SKUs across performance, cooling, oil control, ignition, and appearance categories. What This Category Covers The Engine collection combines OEM-replacement engine service parts with performance aftermarket upgrades for supercharged, turbocharged, and naturally aspirated builds...
View Engine Products
Oil Catch Cans
Oil catch cans for HEMI, LS, LT, and turbocharged platforms are stocked at Black Ops Auto Works. Shop billet aluminum catch cans, mild and wild capacity kits, and direct-fit systems for the Dodge Challenger and Charger Hellcat, Jeep Grand Cherokee Trackhawk, Ram 1500 TRX, Chevrolet Corvette C7, and Chevrolet Camaro platforms. Every product is filterable by AN fitting size, horsepower rating, and vehicle year, make, model, and engine so the correct catch can ships the first time. Black Ops Auto Works carries 440 oil catch can SKUs across mild and wild capacity systems. What This Category Covers Oil catch cans intercept oil vapor and blow-by gases from the PCV system before they recirculate into the intake tract, reducing carbon buildup on intake valves and preventing oil-fouled sensors and intercoolers on turbocharged and supercharged engines. Mild Versus Wild Capacity Mild catch can kits use a smaller AN fitting size, typically 6AN or 8AN, sized for stock to moderately modified ...
View Oil Catch Cans Products
Oil Systems
Oil system parts for supercharged HEMI, LS and LT platforms, diesel trucks, and daily drivers are stocked at Black Ops Auto Works. Shop oil catch cans, air oil separators, oil filters, oil pans, oil pumps, oil pickups, dipsticks, drain plugs, and motor oils for Hellcat, Redeye, Demon, Jeep Trackhawk, Ram TRX, Corvette, Camaro, CTS-V, Mustang, F-150, and Silverado applications. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 1,432 oil system SKUs across catch cans, filtration, and service hardware. What This Category Covers Oil system parts manage crankcase ventilation, filtration, and lubrication delivery throughout the engine. This collection spans oil catch cans, oil separators, air oil separators, oil filters, oil pans, oil pumps, oil pickups, dipsticks, drain plugs, oil baffles, and motor oils for street, track, towing, and high horsepower applications. Crankcase Ventilation...
View Oil Systems Products