PERRIN PSP-INT-350BK Afta-MAF Intake Hose Black for 2002-2007 Subaru WRX/STI

Vehicle Fitment

• 2002-2007 Subaru WRX (All trims, 2.0L/2.5L Turbo EJ205/EJ257, AWD)
• 2004-2007 Subaru WRX STI (All trims, 2.5L Turbo EJ257, AWD)

Features

• Replaces factory corrugated rubber hose for smoother airflow
• Large bore silicone reduces turbulence, improves turbo response
• 5-ply reinforced silicone resists heat and collapse
• Plug-and-play - no ECU tune required
• Available in black glossy finish for engine bay styling
• Includes clamps and installation hardware
• 5-year manufacturer warranty
• Off-road use only (not CARB legal in CA)

Specifications

• Material: 5-ply reinforced silicone
• Color: black
• Inner diameter: OEM-matching, smooth-bore design
• Includes OEM-style clamp kit
• Warranty: 5 years

Included Components

• 1x PERRIN Afta-MAF intake hose (PSP-INT-350BK)
• 2x silicone hose clamps
• Installation instructions & warranty card

Product Description

The PERRIN PSP-INT-350BK Afta-MAF intake hose replaces the original corrugated rubber hose between the turbo inlet and factory air box on 2002-2007 WRX and STI models. With a smooth, uniform silicone interior, it minimizes airflow disruption, enhancing turbo response, throttle feel, and overall power delivery - without requiring any ECU tuning.

Constructed from 5-ply reinforced silicone, this hose resists collapse under boost and withstands heat soak. Installation is simple and plug-and-play, typically taking about 10 minutes. Includes durable clamps and backed by a 5-year warranty. Note: this part is intended for off-road use and is not CARB legal in California.