Subaru OEM Intercooler (05-07 LGT, 05-07 OBXT) | 21821AA021

Overview

The Genuine Subaru OEM Intercooler (Part #21821AA021) is the factory-original charge air cooler designed specifically for turbocharged 2005–2007 Subaru Legacy GT and 2005–2007 Subaru Outback XT models. As a direct OEM replacement, this intercooler delivers the same precision fitment, cooling efficiency, and durability as the unit installed at the factory — ensuring your turbocharged EJ255 engine runs at its best. Whether you're restoring a tired cooling system or replacing a damaged unit, this is the exact part Subaru engineers specified for your vehicle.

Key Features & Benefits

• Genuine Subaru OEM Quality — Manufactured to factory specifications for guaranteed fit, form, and function with no modifications required.
• Exact-Fit Replacement — Engineered specifically for the 2005–2007 Legacy GT and Outback XT platform, ensuring plug-and-play installation using existing mounting points and hose connections.
• Optimal Charge Air Cooling — Restores factory-level intercooling performance, keeping intake charge temperatures low to protect engine efficiency and power output.
• Factory Warranty Coverage — As a genuine Subaru part, this intercooler is backed by Subaru's OEM parts warranty when purchased through an authorized source.
• Durable Construction — Built to Subaru's rigorous quality standards for long-term reliability in the demanding underhood environment of a turbocharged vehicle.
• Direct OEM Cross-Reference — Matches Subaru part number 21821AA021, making it straightforward to verify correct fitment for your specific vehicle.

What's Included

• 1x Genuine Subaru OEM Intercooler (Part #21821AA021)

Specifications

Fitment & Compatibility

This genuine Subaru OEM intercooler is compatible with the following vehicles:

Always verify your vehicle's VIN and engine code before ordering to confirm compatibility. This part is designed exclusively for turbocharged variants of the 2005–2007 Legacy and Outback — it is not compatible with naturally aspirated models.

Installation

The 21821AA021 intercooler is a direct OEM replacement designed to bolt into the factory location using existing mounting hardware and hose connections. While an experienced DIYer comfortable with turbocharged engine systems may be able to complete the installation at home, professional installation by a qualified Subaru technician is recommended to ensure proper fitment and to avoid boost leaks or cooling inefficiencies. Always depressurize the intake system and allow the engine to cool fully before beginning any intercooler work.