Subaru OEM Coolant Hose (05-09 Legacy - 30D) | 99078AA120

Overview

The Genuine Subaru OEM Coolant Hose (Part #99078AA120) is an exact-fit factory replacement hose designed specifically for 2005–2009 Subaru Legacy models. Engineered to Subaru's original specifications, this OEM coolant hose ensures a perfect seal, reliable coolant flow, and long-term durability — keeping your engine operating at the correct temperature. Choosing a genuine Subaru part guarantees compatibility and maintains your vehicle's factory warranty standards.

Key Features & Benefits

• Genuine Subaru OEM Quality — Manufactured to the exact factory specifications used on the original assembly line, ensuring a precise fit and reliable performance every time.
• Exact-Fit Guarantee — Designed exclusively for 2005–2009 Subaru Legacy applications; no trimming, adapting, or modification required.
• Premium Materials — Constructed from high-grade rubber and reinforced materials that resist heat, pressure, and coolant degradation over time.
• Maintains Cooling System Integrity — Proper coolant flow protects your engine from overheating, preserving engine life and performance.
• Factory Warranty Compliance — Using genuine Subaru OEM parts helps maintain your vehicle's factory warranty and ensures dealer-approved repairs.
• Direct Replacement — Replaces worn, cracked, or leaking coolant hoses with a component identical to what came on your Legacy from the factory.

What's Included

• 1x Genuine Subaru OEM Coolant Hose (Part #99078AA120)

Specifications

Fitment & Compatibility

This coolant hose is a genuine OEM part designed for the following Subaru Legacy applications:

Please verify your specific trim level and engine configuration against Subaru part #99078AA120 before ordering. If you are unsure of compatibility, consult your Subaru dealer or reference your VIN.

Installation

This genuine Subaru OEM coolant hose is a direct bolt-on (hose-on) replacement requiring no modification. Basic mechanical experience and standard hand tools are sufficient for most installations. Always allow the engine to cool completely before working on the cooling system, drain coolant responsibly, and inspect clamps and adjacent hoses during replacement. If you are not comfortable working on cooling systems, professional installation by a certified Subaru technician is recommended.