Subaru OEM Turbo Coolant Return Subaru WRX 2002-2003 | 21144AA020

Overview

The Genuine Subaru OEM Turbo Coolant Return Line (Part #21144AA020) is the factory-original coolant return hose designed to route coolant away from the turbocharger on 2002-2003 Subaru WRX models. This exact-fit OEM replacement ensures your turbocharged EJ20/EJ205 engine's cooling system operates at factory specifications, protecting the turbocharger from heat-soak damage and premature wear. If you're replacing a cracked, leaking, or deteriorated coolant line, this is the correct Genuine Subaru part for the job.

Key Features & Benefits

• Genuine Subaru OEM Part — Manufactured to exact factory specifications for a guaranteed perfect fit and reliable long-term performance.
• Exact Part Number #21144AA020 — Eliminates guesswork; cross-reference this number to confirm correct application before ordering.
• Turbocharger Protection — Properly routes coolant back from the turbo to prevent heat buildup, bearing damage, and oil coking inside the turbo center section.
• Factory-Grade Materials — Built to withstand the high-temperature environment of the WRX's turbocharged engine bay, matching original durability and heat resistance.
• Direct Bolt-On Replacement — No modifications required; installs in the same location and configuration as the original line.
• Backed by Subaru OEM Warranty — Genuine Subaru parts are covered under Subaru's standard parts warranty.

What's Included

• 1x Genuine Subaru OEM Turbo Coolant Return Line / Hose — Part #21144AA020

Specifications

Product Fitment

2002-2003 Subaru WRX

Installation

This is a direct OEM replacement coolant line designed for bolt-on installation with no modifications required. Allow the engine to cool completely before servicing the cooling system. Drain or clamp the coolant lines, remove the old line and any retaining clamps, install the new line in the original routing, secure with new clamps if needed, refill and bleed the cooling system, and check for leaks before returning the vehicle to service.