Perrin [02-07 WRX, 04-21 STI, 04-08 FXT] 2.4" Turbo Inlet Hose - Black/Red/Blue | PSP-INT-401

Boost performance and throttle response — the PERRIN Turbo Inlet Hose is a simple upgrade with big gains.

Unlike the restrictive, pleated OEM inlet, the PERRIN Turbo Inlet Hose features a perfectly smooth interior and a significantly larger internal diameter — increasing airflow, reducing turbo spool time, and improving overall engine response. Whether you're running a stock turbo or a high-output setup, this upgrade ensures your engine gets the air it needs, when it needs it.

Built from multi-layer silicone and reinforced with an internal stainless steel wire, this inlet hose maintains its shape even under extreme boost or with high-restriction filters. That means consistent performance, long-term durability, and no risk of collapse under pressure.

• Larger internal diameter for increased airflow

• Smooth inner walls eliminate turbulence and restriction

• Improves throttle response, turbo spool, and acceleration

• Multi-layer high-temp silicone construction

• Embedded stainless steel support wire prevents hose collapse

• Ideal for stock or high-boost turbo setups

• Direct-fit replacement for OEM turbo inlet hose

What’s in the Box:

• PERRIN Silicone Turbo Inlet Hose

• Stainless Steel Clamps

• Installation Instructions

• Warranty Information

Fitment:
Designed for Subaru WRX/STI models (verify compatibility with your year and trim before ordering)

Installation:
Difficulty: ★★★☆☆
Time: 60–90 min
Tools Required: Basic hand tools, hose clamp driver recommended
Instructions: [View Here]

Warranty:
PERRIN Limited Warranty

⚠️ PROPOSITION 65 WARNING:
Cancer and Reproductive Harm — www.P65Warnings.ca.gov