Subaru OEM PCV Hose (02-05 WRX) | 11815AB400

Overview

The Genuine Subaru OEM PCV Hose (Part #11815AB400) is a factory-original positive crankcase ventilation hose designed specifically for the 2002–2005 Subaru WRX. This exact-fit replacement hose ensures proper crankcase pressure regulation, protecting your turbocharged EJ205 engine from oil leaks, sludge buildup, and excessive blowby. If your WRX is showing signs of rough idle, oil consumption, or a cracked/brittle PCV hose, replacing it with the genuine Subaru part guarantees a perfect OEM fit and function every time.

Key Features & Benefits

• Genuine Subaru OEM Quality — Manufactured to Subaru's exact factory specifications, ensuring correct fit, finish, and performance with no modifications required.
• Exact-Fit Replacement — Engineered specifically for the 2002–2005 Subaru WRX (EJ205 turbocharged engine), eliminating guesswork and compatibility concerns.
• Factory-Grade Materials — Built from OEM-spec rubber/polymer compounds rated to withstand the heat cycles and pressure demands of a turbocharged engine environment.
• Maintains Proper Crankcase Ventilation — A functioning PCV hose keeps crankcase pressure balanced, reducing oil consumption and extending engine life.
• Prevents Costly Engine Damage — A cracked or collapsed PCV hose can allow unmetered air into the intake, causing lean conditions, oil leaks, and potential engine damage on boosted applications.
• Direct OEM Replacement — Cross-references Subaru part number 11815AB400 for confident ordering and inventory matching.

What's Included

• 1x Genuine Subaru PCV Hose — Part #11815AB400

Specifications

Fitment & Compatibility

This PCV hose is a direct OEM replacement for the following Subaru vehicles:

Note: Verify your vehicle's part number using your VIN before ordering to confirm fitment. This hose is for the WRX model only and is not confirmed for the WRX STI without further verification.

Installation

The Subaru OEM PCV Hose is a straightforward bolt-on/hose-swap replacement that most experienced DIYers can perform with basic hand tools. The hose connects between the valve cover/crankcase and the intake system. Inspect all hose clamps and connected PCV components during installation, and replace any additional worn hoses or fittings as needed. If you are unfamiliar with turbocharged engine intake systems, professional installation is recommended to ensure all connections are secure and boost integrity is maintained.