Subaru OEM Bypass Valve Recirculation Hose Subaru WRX 2002-2005 | 99071AB123

Overview

The Genuine Subaru OEM Bypass Valve Recirculation Hose (Part #99071AB123) is the factory-replacement hose connecting the blow-off/bypass valve recirculation circuit on 2002-2005 Subaru WRX turbocharged engines. Designed to exact OEM specifications, this hose ensures airtight boost management, preserving throttle response and protecting your turbo system from pressure spikes. If your WRX is experiencing boost leaks, hissing noises, or poor throttle response, this is the correct factory fix.

Key Features & Benefits

• Genuine Subaru OEM Part – Manufactured to Subaru factory specifications for guaranteed fitment and reliability on your 2002-2005 WRX.
• Exact-Fit Design – Drop-in replacement with no modification required; mates perfectly to OEM bypass valve and intake piping connection points.
• Durable OEM-Grade Material – Constructed from Subaru-approved rubber compound engineered to withstand repeated heat cycles and boost pressures in the EJ205 turbocharged environment.
• Restores Proper Boost Recirculation – Ensures the bypass valve recirculates pressurized air correctly under closed-throttle conditions, protecting the turbocharger and maintaining smooth operation.
• Factory Warranty Eligible – As a Genuine Subaru part, it is backed by Subaru's OEM warranty.
• Prevents Boost Leaks – Replaces cracked, hardened, or deteriorated OEM hose to eliminate boost leaks.

What's Included

• 1x Genuine Subaru Bypass Valve Recirculation Hose – Part #99071AB123

Specifications

Product Fitment

2002-2005 Subaru WRX

Installation

This bypass valve recirculation hose is a straightforward bolt-on replacement requiring basic hand tools.