PERFORMANCE / EST. 2026
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Install

BRZ/FR-S: fit the PERRIN inlet hose

Part-specific instructions, fitment limits and final checks.

GUIDE OVERVIEW

Difficulty
Basic · 2/5
Time
1 min read; job time varies
Vehicle / platform
2013–2020 Subaru BRZ and Scion FR-S where model exists; PSP-INT-430
Tools
  • Screwdriver or nut driver
  • Pliers
Parts / supplies
  • PSP-INT-430
  • Two size-52 clamps
  • 5/8-inch cap
STEP 01

Remove the sound-generator path

Remove the original inlet hose and sound-generator tubing as far as the chassis-mounted fitting. Keep the plastic crankcase elbow attached to its hose. Place the supplied cap over the chassis fitting; the instructions do not require a clamp there.

Sources 1

STEP 02

Fit and reconnect

Install the replacement between throttle body and intake, leaving clamps loose. Move the original pinch clamp to the new crankcase spigot. Insert the original elbow and secure it with that clamp. If the reinforced hose becomes distorted, restore its shape by hand.

Sources 1

STEP 03

Check belt clearance

Adjust the hose to provide at least 1/2 inch from the serpentine belt, then tighten its clamps. Start the engine and check normal operation before the test drive. If it fails to start or runs abnormally, investigate vacuum leaks.

Sources 1

Products in this guide

Sources / references 2
  1. PERRIN official installation instructions ↗Reviewed Oct 8, 2026
  2. PERRIN official instructions database ↗Reviewed Oct 8, 2026

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