Subaru OEM Automatic Transmission Oil Cooler Hose Subaru Legacy / Outback 2005-2009 | 45520AG01A

Fitment

• 2005–2007, 2009 Subaru Legacy 2.5L 4AT Sedan

• 2005–2007 Subaru Legacy 2.5L 4AT Wagon

• 2005–2007, 2009 Subaru Legacy GT 2.5L Turbo 5AT Sedan

• 2005–2007 Subaru Legacy GT 2.5L Turbo 5AT Wagon

• 2006–2007 Subaru Outback 2.5L 4AT Sedan

• 2005–2007, 2009 Subaru Outback 2.5L 4AT Wagon

• 2005–2007, 2009 Subaru Outback XT 2.5L Turbo 5AT Wagon

Overview

The Genuine Subaru OEM Automatic Transmission Oil Cooler Hose (Part #45520AG01A) is the factory-original replacement hose designed to maintain proper automatic transmission fluid cooling on 2005–2009 Subaru Legacy and Outback models. Engineered to exact OEM specifications, this hose ensures a leak-free, precise fit that aftermarket alternatives simply cannot guarantee. Keeping your transmission running at the correct operating temperature protects against premature wear and costly transmission failure.

Key Features & Benefits

• Genuine Subaru OEM Part – Factory-original construction ensures an exact fit, proper sealing, and full compatibility with your Legacy or Outback's automatic transmission cooling system.
• Exact-Fit Guarantee – Engineered to the same tolerances as the part that came on your vehicle at the factory — no modifications or adapters required.
• Premium Materials – Built to withstand high transmission fluid temperatures, pressure cycling, and the under-hood environment for long-lasting, reliable performance.
• Prevents Costly Transmission Damage – A failed or leaking cooler hose can cause transmission fluid loss and overheating; replacing with OEM quality restores the factory cooling circuit.
• Backed by Subaru – As a genuine OEM component, this hose is covered under Subaru's standard parts warranty when purchased from an authorized Subaru dealer.

What's Included

• 1x Genuine Subaru Automatic Transmission Oil Cooler Hose (Part #45520AG01A)

Specifications

Installation

This is a direct OEM replacement hose designed for bolt-on installation with no modifications required. The job typically involves draining or capturing transmission fluid, removing the old hose from the cooler lines, installing the new hose, and topping off the transmission fluid to the correct level. Professional installation by a qualified technician is recommended to ensure proper torque specs, leak-free connections, and correct fluid level after service.