Fits 2018-2021 Subaru STI and 2018 Type RA.

The Cobb NexGen Stage 2 Power Package provides a comprehensive, emissions-compliant performance upgrade for the EJ25 engine. This kit replaces legacy Stage 2 configurations with updated hardware and calibrations designed to work within modern environmental standards while still delivering significant gains in horsepower and torque. By combining engineered hardware with optimized ECU mapping, this package improves throttle response and overall engine efficiency for a more capable driving experience.

• Complete NexGen Stage 2 performance solution for the 2.5L EJ engine
• Compatible with 2018-2021 Subaru STI and 2018 Type RA models
• Engineered for power gains while maintaining emissions compliance
• Durable hardware components featuring a Blue finish
• Designed for straightforward bolt-on installation
• Manufacturer Part Number: SUB004NG2S2-BL

Fits 2018 Subaru WRX STI Type RA and 2019-2021 Subaru WRX STI.

The Cobb NexGen Stage 2 Power Package is a complete performance solution engineered to provide significant power gains while maintaining emissions compliance. This kit bridges the gap between basic intake upgrades and full bolt-on configurations by combining the industry-standard Accessport V3 with high-efficiency hardware. By optimizing the EJ25's air-fuel ratios and boost control through the NexGen calibration, this package delivers a substantial increase in torque and horsepower across the entire RPM range.

• Accessport V3: The world's best-selling, most flexible ECU tuning solution for Subaru, pre-loaded with Stage 2 NexGen maps.
• NexGen Stage 2 Hardware: Includes high-flow intake components designed to reduce induction restriction and improve turbo spool.
• Sleek Aesthetics: Components feature a durable black finish for a clean, professional look under the hood.
• Installation Ready: Includes all necessary brackets, hardware, and instructions for a bolt-on installation to factory mounting points.
• Reliability: Calibrations are extensively tested to ensure engine safety and consistent performance in various driving conditions.
• Manufacturer Part Number: SUB004NG2S2-BK

The BMC Carbon Dynamic Airbox (CDA) is a high-performance universal filtration system designed for engines with a displacement greater than 1600cc. Unlike standard factory air boxes or open-element filters, the CDA utilizes a genuine carbon fiber housing to insulate the intake air from engine bay heat soak, ensuring a denser, cooler oxygen charge reaches the combustion chamber for improved volumetric efficiency.

Inside the carbon cylinder, a washable, multi-layer cotton air filter works in tandem with an internal flow deflector. This aerodynamic design minimizes pressure drops and creates a constant pressure airflow into the intake manifold, resulting in sharper throttle response and increased power throughout the RPM range. This universal kit (ACCDA85-150) is engineered for high-volume air requirements with 85mm diameter inlet and outlet ports.

• Thermal Insulation: Real carbon fiber construction acts as a superior heat barrier compared to plastic or metal.
• Dynamic Overpressure: Engineered to utilize the dynamic pressure of incoming air to force a higher volume into the engine.
• High-Flow Filtration: Features a reusable, pre-oiled multi-layer cotton filter that outperforms OE paper elements.
• Universal Fitment: Designed for custom installations on engines over 1.6L displacement.
• Manufacturer Part Number: ACCDA85-150

Fits select 1999-2004 Nissan Frontier and Xterra (V6-3.3L / V6-3.3L Supercharged) models.

The Weapon R Intake Cold Air Box Kit is engineered to isolate your air filter from the high-temperature environment of the engine bay. By shielding the intake from radiant heat soak, this kit ensures that the engine draws in cooler, denser air, which is essential for optimized combustion and consistent performance in V6-equipped Nissan trucks and SUVs. This kit is a critical upgrade for drivers looking to maintain lower intake air temperatures (IAT) during heavy use or in hot climates.

• Shields the air filter from engine heat to maintain lower intake temperatures
• Engineered for a precise fit with the existing intake tract
• Durable construction designed to withstand engine bay heat and vibration
• Includes necessary hardware for installation
• Manufacturer Part Number: 950-117-102

The Spectre 9833 Polished Aluminum Inline Air Box is a versatile solution for fabricators and enthusiasts building custom air intake systems. By enclosing the air filter within a cylindrical housing, this unit allows for the direct routing of cool outside air to the engine, helping to isolate the intake charge from radiant engine bay heat.

Constructed from lightweight, polished aluminum, the housing features a 4-inch outside diameter with 3-inch inlet and outlet necks to accommodate standard intake plumbing. Every unit comes equipped with a pre-installed Spectre High Flow HPR air filter, designed to provide superior airflow while maintaining critical engine protection.

• Manufacturer Part Number: 9833
• Inlet/Outlet Diameter: 3 inches
• Housing Outside Diameter: 4 inches
• Material: Polished aluminum
• Filter Type: High-flow HPR filter included
• Configuration: Inline cylindrical air box for custom ducting

The Spectre 9832 Inline Air Box is a versatile solution for custom air intake fabrication, designed to isolate the intake charge from radiant engine bay heat. This cylindrical housing allows you to route an intake tract to a fresh air source, ensuring the engine receives cooler, denser air for improved combustion efficiency.

Constructed from polished aluminum for a professional finish and corrosion resistance, this inline unit features a 4-inch inlet and outlet to support high-airflow requirements. The compact 5-inch diameter housing measures 10.1 inches in length, making it suitable for engine bays with limited space where a traditional open-element filter would be prone to heat soak.

• Polished aluminum housing with 5-inch outside diameter
• 4-inch inlet and outlet diameters for high-velocity airflow
• Overall length of 10.1 inches
• Includes high-flow HPR air filter
• Designed for custom cold air intake applications
• Manufacturer Part Number: 9832

Fits 2004-2008 Subaru Forester XT models, including Sports, Limited, and Premium trims.

Upgrade your induction system with the PERRIN Red Turbo Inlet Hose. This high-flow component replaces the restrictive factory corrugated rubber hose, which is prone to collapsing under vacuum and degrading over time due to heat soak. By providing a larger internal diameter and a smoother interior surface, this hose allows the turbocharger to draw air more efficiently, improving throttle response and overall airflow.

Built to withstand the high-temperature environment of a turbocharged engine bay, this hose is constructed from reinforced multi-layer silicone that maintains its structural integrity under extreme conditions. It is a direct-fit performance upgrade designed to bolt up to the factory turbocharger and intake components.

• Manufacturer Part Number: PSP-INT-401RD
• Replaces restrictive OEM corrugated rubber inlet
• High-temperature reinforced silicone construction
• Smooth interior walls to reduce air turbulence
• Vibrant red finish for enhanced engine bay aesthetics

Fits 2004-2008 Subaru Forester (XT, Sports 2.5 XT, XT Limited, and XT Premium).

The PERRIN Turbo Inlet Hose replaces the restrictive, corrugated factory rubber intake with a high-flow, multi-layer reinforced silicone unit. Designed to eliminate the turbulence common in OE components, this inlet hose provides a smooth, internal diameter that maintains consistent airflow to the turbocharger compressor. Unlike the factory hose, which can become brittle or collapse under high vacuum, the PERRIN silicone construction is engineered to withstand heat and high-boost pressures without distorting.

• Construction: Multi-layered reinforced silicone for maximum durability and heat resistance
• Flow Dynamics: Smooth internal surface reduces turbulence and increases air velocity
• Reliability: Rigid design prevents hose collapse under high vacuum
• Color: Blue finish
• Manufacturer Part Number: PSP-INT-401BL

Fits 2004-2008 Subaru Forester XT including Sports, Limited, and Premium models (2.5L Turbo).

The PERRIN Turbo Inlet Hose (PSP-INT-401BK) is designed to maximize airflow to your turbocharger by replacing the restrictive, corrugated factory intake pipe. This performance hose features a smooth internal bore and a larger diameter than the original equipment, reducing turbulence and allowing the turbo to pull air more efficiently for improved throttle response and consistent power delivery.

• Reinforced construction prevents the hose from collapsing under high vacuum and heat
• Increases air volume and flow velocity to the turbocharger
• Durable multi-layer material resists oil and fuel degradation
• Direct replacement for the factory OE inlet pipe
• Manufacturer Part Number: PSP-INT-401BK

Fits 2005-2009 Subaru Legacy GT, GT Limited, and GT spec.B.

The PERRIN AFTA-MAF Intake Tube replaces the factory corrugated rubber hose between the air-box and the turbo inlet. By eliminating the accordion-style internal walls found in the OE part, this tube provides a smooth internal bore that reduces air turbulence and improves throttle response. It is a direct-fit performance upgrade that maintains compatibility with the factory air-box and MAF sensor housing.

• Manufacturer Part Number: PSP-INT-355RD
• Application: Connects factory air-box to turbo inlet
• Finish: Red
• Replaces restrictive factory corrugated hose
• Improves airflow efficiency to the turbocharger

Fits 2008-2014 Subaru Impreza WRX models (including Limited and Premium).

The PERRIN AFTA-MAF Intake Tube replaces the restrictive, corrugated factory rubber hose located between the air-box and the turbo inlet. By eliminating the accordion-style design of the OEM component, this tube provides a smoother internal surface to reduce turbulence and optimize airflow into the induction system.

• Direct replacement for the factory air-box to inlet hose
• Smooth internal bore for improved airflow efficiency
• Durable construction designed to withstand engine bay heat
• Finish: Black
• Manufacturer Part Number: PSP-INT-355BK

Fits 2002-2005 Subaru Impreza WRX.

The PERRIN AFTA-MAF Intake Tube replaces the restrictive factory corrugated rubber hose between the air filter box and the turbo inlet pipe. By smoothing the airflow path after the Mass Air Flow (MAF) sensor, this tube eliminates turbulence and can improve throttle response. Unlike the original equipment hose that can degrade or crack over time, the PERRIN version is built from high-temperature reinforced silicone to withstand engine heat and vacuum pressures without collapsing.

• Direct replacement for the factory air-box-to-inlet hose
• Smooth internal bore for optimized laminar airflow
• Multi-layer reinforced silicone construction for durability
• Resistant to high under-hood temperatures
• Vibrant red finish for an upgraded engine bay appearance
• Manufacturer Part Number: PSP-INT-350RD

Fits 2002-2005 Subaru Impreza WRX.

The PERRIN AFTA-MAF Intake Tube replaces the restrictive, corrugated factory rubber hose between the air filter box and the turbo inlet pipe. By eliminating the turbulent accordion-style internal walls of the OE piece, this intake tube provides a smoother airflow path into the turbocharger, improving throttle response and increasing intake efficiency.

Constructed from high-temperature resistant, multi-layer silicone, the AFTA-MAF hose is engineered to withstand engine bay heat without collapsing under vacuum or cracking over time. This is a direct bolt-on upgrade that maintains factory sensor locations and requires no ECU recalibration for installation.

• Direct replacement for the OEM air-box to inlet hose
• Smooth internal bore reduces air turbulence for better flow
• Durable silicone construction resists heat soak and degradation
• Finish: Black
• Manufacturer Part Number: PSP-INT-350BK

Fits 2015-2021 Subaru WRX Base, Limited, and Premium models.

Enhance the efficiency of your Mishimoto Performance Air Intake with this dedicated steel airbox. Engineered to isolate the air filter from engine bay heat soak, this airbox effectively diverts cold ambient air directly to the intake, helping to maintain lower intake air temperatures (IATs). This design also stabilizes airflow across the Mass Air Flow (MAF) sensor, providing more accurate readings for more reliable datalogging and engine tuning.

Constructed from durable steel and finished in a sleek, black powdercoat, this airbox adds a professional look to your engine bay while resisting corrosion. The kit includes all necessary hardware and protective edge strips to ensure a secure, clean installation. If used with the stock plastic intake duct, a template is provided to guide accurate trimming for a perfect fit.

• Direct fit for 2015-2021 Subaru WRX models
• Constructed from durable steel with a black powdercoated finish
• Diverts cold outside air toward the filter for improved intake efficiency
• Helps provide more accurate MAF readings for better tuning reliability
• Includes all necessary mounting hardware and protective edge strips
• Compatible with factory intake duct (trimming template included)
• Manufacturer Part Number: MMAB-WRX-15
• Protected by the Mishimoto Lifetime Warranty

Fits select 2005-2014 Subaru WRX, STI, Legacy GT, Outback XT, and Forester XT models.

The Cobb SF Airbox is designed to isolate the intake filter from the radiant heat of the engine bay, ensuring your turbocharger draws in the coolest air possible. Heat soak can significantly impact performance on turbocharged Boxer engines; this airbox solves that by creating a dedicated chamber for the air filter. Constructed from laser-cut aluminum and finished in a durable black powder coat, it provides a clean, factory-like appearance while standing up to the harsh environment of the engine compartment.

• Designed specifically for use with the Cobb SF Intake system
• Laser-cut aluminum construction for precise fitment and weight savings
• Black powder-coated finish for heat resistance and durability
• Utilizes factory mounting points for a straightforward installation
• Includes all necessary hardware for a complete setup
• Manufacturer Part Number: 724160

Fits 2019-2021 Subaru WRX STI and STI Type RA.

Protect your intake charge from power-robbing engine bay heat with the Cobb Tuning Airbox. This enclosure is designed to isolate your air filter from the high-temperature environment of the engine compartment, ensuring the turbocharger pulls in cooler, denser air. By managing intake air temperatures (IATs), this component helps maintain consistent power delivery and engine safety during high-load driving.

• Precision laser-cut aluminum construction for a perfect fit
• Durable black wrinkle powder-coated finish for corrosion resistance
• Effective heat shielding to reduce intake air temperatures
• Integrates seamlessly with Cobb SF intake systems
• Includes all required mounting hardware for installation
• Manufacturer Part Number: 716100

Fits select 2008-2014 Subaru Impreza WRX, WRX STI, 2.5 GT, and Forester XT.

The Subaru SF Intake and Airbox system replaces the restrictive factory airbox with a high-flow induction setup designed for improved engine response and consistent power delivery. By combining a high-surface-area conical filter with a dedicated, custom-molded airbox, this kit ensures your turbocharger pulls cooler air while shielding the intake from radiant engine bay heat.

• Specifically engineered for 2008-2014 Subaru turbo models
• High-flow reusable conical air filter for increased airflow efficiency
• Custom SF Airbox isolates the filter from heat soak to maintain lower intake temperatures
• Direct bolt-on installation using factory mounting points for a secure fit
• Manufacturer Part Number: 715300-BL

Fits 2008-2014 Subaru Impreza WRX and WRX STI, 2009-2010 Impreza 2.5 GT, and 2009-2013 Forester XT.

The Cobb SF Intake + Airbox system (715300-BK) is engineered to optimize induction efficiency by replacing the restrictive factory airbox and paper filter. This kit features a high-flow cone filter element and a custom-designed airbox that acts as a thermal barrier. By isolating the intake from the high temperatures of the engine bay, the SF Airbox ensures that the turbocharger draws in cooler, denser air, which is critical for consistent power delivery and engine health on turbocharged EJ-series engines.

• High-flow, reusable oiled-cotton gauze filter media for increased airflow
• Black powder-coated aluminum airbox prevents heat soak from the engine compartment
• Velocity stack design promotes smooth air transition into the intake tract
• Direct-fit installation using factory mounting points for a secure, OE-quality fit
• Compatible with factory MAF sensor location to maintain proper scaling
• Manufacturer Part Number: 715300-BK

Fits 2015-2018 Subaru WRX STI models.

The Cobb SF Airbox is engineered to isolate your intake filter from the high-temperature environment of the engine bay. By providing a dedicated enclosure, this airbox helps maintain lower intake air temperatures (IATs), which is essential for consistent power delivery and engine safety in turbocharged applications. Designed as a direct-fit upgrade, it protects the filter from debris and radiant heat while maintaining an OEM-plus aesthetic under the hood.

• Compatible with 2015-2018 Subaru WRX STI
• Reduces heat soak by isolating the air filter from engine heat
• Constructed for durability with a professional textured finish
• Designed for use with Cobb SF Intake systems
• Includes all necessary mounting hardware for installation
• Manufacturer Part Number: 715160

Fits select 2002-2007 Subaru WRX, 2004-2007 WRX STi, and 2004-2008 Subaru Forester XT.

The Cobb SF Airbox Kit (MPN 712160) is designed to solve the problem of high intake air temperatures by isolating your SF Intake filter from the radiant heat of the engine bay. By creating a sealed enclosure that utilizes the factory inlet ducting, this kit ensures your turbocharger draws in cooler, denser ambient air rather than hot air from the engine compartment. This reduction in Intake Air Temperatures (IAT) is critical for maintaining consistent power delivery and engine safety under load.

• Specifically engineered for compatibility with the Cobb SF Intake system.
• Durable construction provides excellent thermal insulation to prevent heat soak.
• Integrates seamlessly with the factory fresh air ducting for maximum efficiency.
• Includes all necessary hardware for a straightforward installation to existing mounting points.
• Finished with a laser-etched Cobb logo for a clean, professional aesthetic under the hood.

Fits 2015 Subaru WRX STI Base, Launch Edition, and Limited.

The Stage 1+ Power Package is an engineered performance solution designed specifically for the 2015 Subaru WRX STI. This kit combines the industry-leading Accessport V3 handheld tuner with a high-flow intake system to eliminate factory airflow restrictions and optimize engine calibration. It provides a significant increase in power and torque while maintaining daily drivability and engine safety margins.

• Accessport V3: Large, high-resolution screen with customizable multi-gauge monitoring and easy ECU flashing.
• Optimized Calibration: Recalibrates the factory ECU to maximize efficiency with the upgraded intake components.
• Direct Fitment: Designed to bolt into factory mounting points without permanent modifications to the vehicle.
• Complete System: Includes all necessary hardware for a professional-grade installation.
• Manufacturer Part Number: 616X01P-BL

Fits 2015 Subaru WRX STI Base, Launch Edition, and Limited models.

The Stage 1+ Power Package (MPN 616X01P-BK) is a comprehensive performance solution designed to increase horsepower and torque while improving throttle response. This kit provides a coordinated set of upgrades that install using factory-style mounting points, offering a significant boost in engine efficiency and drivability without requiring deep internal modifications.

• Specifically engineered for 2015 Subaru WRX STI applications
• Designed for improved power delivery and engine breathing
• Straightforward installation using included hardware
• Genuine performance upgrade kit with verified fitment
• Manufacturer Part Number: 616X01P-BK

Fits select 2008-2014 Subaru Impreza WRX, WRX STI, and Forester XT.

The Stage 1+ Power Package with V3 (MPN 615X01P-BL) is a complete performance solution designed to optimize airflow and engine management. This kit combines a high-flow induction system with the powerful Accessport V3 handheld programmer to deliver increased horsepower and torque through precise ECU recalibration. By replacing the restrictive factory intake and optimizing fuel and ignition timing, this package provides a significant improvement in throttle response and overall drivability.

• Accessport V3: Features a high-resolution screen, customizable multi-gauge display, and easy-to-use ECU flashing capabilities for data logging and monitoring.
• Stage 1+ Air Intake: Designed to increase induction volume and reduce turbulence, allowing the turbocharger to spool more efficiently.
• Bolt-On Installation: Hardware is designed to fit factory mounting points for a straightforward installation process.
• Pre-Loaded Calibrations: Includes specific maps developed for the included hardware to ensure safe and reliable power gains.

Vehicle Fitment:

• 2009-2014 Subaru Impreza WRX Premium
• 2008-2014 Subaru Impreza WRX STI
• 2011-2014 Subaru Impreza WRX STI Limited
• 2010 Subaru Impreza WRX STI Special Edition
• 2009 Subaru Forester XT
• 2009-2010 Subaru Forester XT Limited
• 2010-2013 Subaru Forester XT Premium
• 2011-2013 Subaru Forester XT Touring
• 2009-2010 Subaru Impreza 2.5 GT
• 2008-2014 Subaru Impreza WRX
• 2010-2014 Subaru Impreza WRX Limited

Fits select 2008-2014 Subaru Impreza WRX, WRX STI, 2.5 GT, and 2009-2013 Forester XT.

The Stage 1+ Power Package is a calibrated performance solution designed to unlock the power potential of your Subaru EJ engine while maintaining reliability. This kit centers on the Accessport V3, providing a powerful handheld interface for ECU flashing, real-time data monitoring, and diagnostic tool functionality. By combining the tuning capabilities of the V3 with a high-flow intake system, this package allows the turbocharger to breathe more freely, resulting in improved throttle response and more efficient boost delivery.

The included intake components are engineered for a precise fit, utilizing factory-style mounting points for a straightforward installation. This package is specifically designed for vehicles using the factory fuel system and exhaust, providing a measurable performance increase without requiring internal engine modifications.

• Accessport V3: High-resolution screen with customizable multi-gauge displays and data logging capabilities.
• High-Flow Intake: Optimized air induction path with a black finish for a clean, professional engine bay appearance.
• Installation Hardware: Includes all necessary brackets, couplers, and clamps required for a complete bolt-on install.
• System Integration: Engineered to work seamlessly with factory sensors and mounting locations.
• Manufacturer Part Number: 615X01P-BK