PERRIN Turbo Inlet Hose - 2002-2007 WRX / 2004-2021 STi / 2004-2008 Forester XT

Eliminate a major restriction in your Subaru's intake system with the PERRIN Turbo Inlet Hose. This high-quality silicone hose replaces the restrictive factory accordion-style inlet hose, improving airflow to the turbo for better throttle response and power gains. Essential upgrade for any modified WRX, STi, or Forester XT.

Key Features:

• Replaces restrictive factory accordion-style inlet hose
• High-quality silicone construction for durability and heat resistance
• Smooth interior eliminates turbulence for maximum airflow
• Black finish complements engine bay appearance
• Direct bolt-on replacement - no modifications required
• Includes all necessary clamps and hardware
• PERRIN quality engineering and manufacturing
• Made in the USA

Performance Benefits:

• Improved Airflow: Smooth interior eliminates restriction for better turbo performance
• Better Throttle Response: Reduced restriction allows turbo to spool faster
• Power Gains: Supports increased boost and power on modified engines
• Heat Resistant: Silicone construction withstands high engine bay temperatures
• Durable: Won't crack, collapse, or deteriorate like factory rubber hose
• Essential Upgrade: Eliminates a major bottleneck in the intake system

Specifications:

• Brand: PERRIN Performance
• Part Number: PSP-INT-401BK
• Product: Turbo Inlet Hose
• Material: High-quality silicone
• Color: Black
• Installation: Direct bolt-on replacement
• Made in: USA
• Weight: 2.7 lbs
• Barcode: PSP-INT-401BK

Fitment Information:

• Compatible Vehicles:
• 2002-2007 Subaru Impreza WRX (all models)
• 2004-2021 Subaru Impreza WRX STi (all models)
• 2004-2008 Subaru Forester XT (all models)
• Note: Designed for EJ20 and EJ25 turbocharged engines. Verify your specific model year before ordering.

What's Included:

• PERRIN turbo inlet hose (black silicone)
• Stainless steel clamps
• All necessary mounting hardware
• Installation instructions

Installation Notes:

• Simple DIY installation - approximately 30-60 minutes
• Remove factory inlet hose from turbo inlet and intake
• Install PERRIN silicone hose in place of factory hose
• Secure with included stainless steel clamps
• Basic hand tools required
• Professional installation available if preferred

Why Replace the Factory Inlet Hose?

The factory turbo inlet hose on the WRX, STi, and Forester XT uses an accordion-style design with a corrugated interior. While this design allows for flexibility during installation, it creates significant turbulence and restriction in the airflow path to the turbo. This restriction limits turbo performance, especially on modified engines running higher boost levels.

The PERRIN Turbo Inlet Hose features a smooth interior that eliminates this turbulence and restriction, allowing air to flow freely to the turbo inlet. This results in improved throttle response, faster turbo spool, and the ability to support higher power levels on modified engines.

High-Quality Silicone Construction:

PERRIN uses premium silicone for their turbo inlet hose, which offers several advantages over the factory rubber hose:

• Heat Resistance: Silicone withstands high engine bay temperatures without degrading
• Durability: Won't crack, collapse, or deteriorate over time like rubber
• Flexibility: Maintains flexibility even in extreme temperatures
• Longevity: Lasts significantly longer than factory rubber hose

Essential for Modified Engines:

If you're running an aftermarket intake, turbo upgrade, or increased boost levels, the PERRIN Turbo Inlet Hose is an essential upgrade. The factory inlet hose becomes an even bigger bottleneck on modified engines, limiting the performance gains from your other modifications. The PERRIN hose ensures your turbo receives unrestricted airflow for maximum performance.

Smooth Interior Design:

The smooth interior of the PERRIN hose is critical for maximum airflow. Unlike the corrugated factory hose that creates turbulence and restriction, the PERRIN hose provides a smooth, unrestricted path for air to flow to the turbo. This reduces pressure drop and allows the turbo to work more efficiently.

Black Finish:

The black silicone finish complements most engine bay aesthetics and maintains its appearance over time. Unlike some colored silicone hoses that can fade or discolor, the black finish stays looking good even after years of exposure to engine bay heat and contaminants.

Why PERRIN?

PERRIN Performance has been engineering high-quality Subaru performance parts for over 30 years. Their turbo inlet hose is designed specifically for the WRX, STi, and Forester XT platforms, ensuring perfect fitment and reliable performance. Made in the USA with PERRIN's commitment to quality and precision.

Perfect Pairing:

For maximum intake system performance, pair the PERRIN Turbo Inlet Hose with:

• PERRIN or aftermarket cold air intake
• Upgraded turbo or turbo inlet
• Boost controller for increased boost levels
• ECU tuning to optimize for improved airflow

Pro Tips:

• Use the included stainless steel clamps and tighten securely to prevent boost leaks
• Inspect factory hose for cracks or deterioration - if damaged, replacement is essential
• Install as part of a complete intake system upgrade for maximum gains
• Pair with ECU tuning to fully realize performance benefits

What Customers Say:

• "Noticeable improvement in throttle response"
• "Essential upgrade for any modified WRX or STi"
• "Quality construction, perfect fitment"
• "Should have done this upgrade years ago"

Perfect For: WRX, STi, and Forester XT owners looking to eliminate intake restriction, improve throttle response, or support increased boost and power on modified engines.

Pro Tip: The turbo inlet hose is one of the most cost-effective performance upgrades you can make - eliminates a major restriction for minimal investment.

Made in USA: PERRIN Performance quality and precision, designed specifically for Subaru turbocharged engines.

Eliminate intake restriction with PERRIN Turbo Inlet Hose - smooth silicone construction, improved airflow, better throttle response, made in USA.