PERRIN PSP-INT-421BK Turbo Inlet Hose for 08-14 Subaru WRX/Legacy/Forester XT

Vehicle Fitment

• 2008-2014 Subaru WRX (All trims, 2.5L Turbo EJ255/EJ257)
• 2005-2009 Subaru Legacy GT & Outback XT (2.5L Turbo EJ255)
• 2009-2012 Subaru Forester XT (2.5L Turbo EJ255)

Features

• 5-ply heat-resistant silicone with SS wire support
• 2.4" ID smooth-bore design removes OEM pleats
• Built-in aluminum BOV connection port
• Integrated ½" ID vacuum/crank-vent spigots
• Improves turbo spool, acceleration, throttle response
• Black glossy finish resists heat soak
• No tuning required--drop-in factory replacement
• Backed by 5-year manufacturer warranty

Specifications

• Inner diameter: 2.4" (front inlet)
• Material: multilayer reinforced silicone, SS wire
• Finish: black; also available in red/blue
• Spigot size: ½" ID (vacuum/PCV ports)
• Compatible with stock turbo inlet location

Included Components

• 1x PERRIN silicone turbo inlet hose (PSP-INT-421BK)
• 1x glass-filled nylon coupler
• Clamps and vacuum fittings
• Installation instructions
• Warranty documentation

Product Description

The PERRIN PSP-INT-421BK Turbo Inlet Hose replaces the OEM rubber inlet on select Subaru models and provides a smooth, larger 2.4" ID silicone path to the turbo. The multi-ply, stainless-reinforced design resists collapse and heat soak. A built-in aluminum blow-off valve port and multiple ½" spigots deliver reliable connections for vacuum and PCV lines.

Installation is straightforward, requiring no ECU tune, and yields faster turbo spool, improved throttle response, and modest horsepower gains. Ideal for enthusiasts upgrading intake or turbo systems. Fitment confirmed through 2014; 2015+ unconfirmed. Compatible across AWD trims--Impreza WRX, Forester XT, Legacy GT/Outback XT. Designed to exact OEM mounting locations.