Perrin Post MAF Hose Red 2002-2007 WRX / 2004-2007 STI | Smooth Airflow | Silicone Intake Hose
Overview
The Perrin Post MAF Hose Red is a high-quality silicone replacement hose designed specifically for the 2002-2007 Subaru WRX and 2004-2007 WRX STI models. This upgrade replaces the factory corrugated rubber MAF hose with a smooth, larger diameter silicone tube that optimizes airflow to your turbocharged engine. Ideal for Subaru enthusiasts looking to restore or improve intake efficiency, this hose addresses common issues like cracking, leaks, and airflow restrictions found in aging OEM components.
Engineered with precision, Perrin Performance focuses on delivering parts that enhance both reliability and performance. The smooth inner surface and increased internal diameter reduce air turbulence and pressure drop, which are critical factors for turbocharged Subaru engines. This design philosophy ensures a more consistent and efficient air supply, contributing to improved throttle response and quicker turbo spool.
For Subaru owners, this hose offers tangible benefits beyond just maintenance. By restoring smooth airflow, it supports better engine breathing and can contribute to a noticeable improvement in acceleration and overall turbo performance. Whether you’re maintaining a high-mileage WRX/STI or upgrading your intake system, the Perrin Post MAF Hose is a practical, performance-driven solution tailored to the Subaru platform.
Features & Specifications
This Perrin Performance Post MAF Hose is engineered for 2002-2007 WRX and 2004-2007 WRX STI models and features a smooth inner surface with a larger internal diameter. Constructed from durable silicone, it delivers improved airflow and throttle response for Subaru enthusiasts seeking reliable intake upgrades and enhanced turbo efficiency.
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Brand: Perrin Performance
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Product: Post MAF Hose Red 2002-2007 WRX / 2004-2007 STI
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Part Number: PSP-INT-350RD
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Fitment: 2002-2007 Subaru WRX, 2004-2007 Subaru WRX STI
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Material: Silicone
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Finish: Red
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Construction: Molded silicone with smooth inner bore
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Origin: Made in USA
Key Benefits
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Performance: Larger diameter and smooth interior reduce air turbulence for quicker turbo spool and improved throttle response.
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Durability: High-quality silicone resists cracking and leaks common in aging OEM rubber hoses.
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Fitment: Direct replacement designed specifically for WRX and WRX STI models, ensuring a perfect fit without modifications.
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Maintenance: Ideal upgrade for high-mileage Subarus to restore intake system integrity and prevent boost leaks.
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Quality: Made in the USA with premium materials for long-lasting reliability under turbocharged conditions.
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Value: Includes clamps and installation instructions for a complete, hassle-free upgrade.
What's Included
- 1× Perrin Post MAF Hose Red 2002-2007 WRX / 2004-2007 STI
- 2× Hose clamps
- Installation instructions
Installation & Compatibility
The Perrin Post MAF Hose is a straightforward bolt-on replacement that is DIY-friendly for enthusiasts with basic mechanical skills. No special tools are required beyond common hand tools for hose clamp removal and installation. This hose fits directly onto the factory MAF sensor and intake piping without any trimming or modifications. While no tuning is required, verifying fitment for your specific year and trim is recommended to ensure compatibility.
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Professional Installation: DIY-Friendly
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Modifications Required: None
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Verify Compatibility: Confirm fitment for your specific year and trim level
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