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The Genuine Subaru OEM Water Pump Hose (Part #99078AA700) is an exact-fit factory replacement coolant hose designed specifically for 2010–2014 Subaru Legacy 3.6D models. As an authentic OEM component, it ensures proper coolant flow to and from the water pump, maintaining optimal engine temperature and preventing overheating. This is the same hose installed at the factory — no modifications, trimming, or adaptation required.
| Part Number | 99078AA700 |
|---|---|
| Brand | Genuine Subaru OEM |
| Part Type | Water Pump Hose / Coolant Hose |
| Application | 2010–2014 Subaru Legacy 3.6D |
| Material | OEM-grade rubber/EPDM |
| Condition | New, Genuine OEM |
This water pump hose is designed to fit the following Subaru vehicles:
Always verify your vehicle's VIN and engine code before ordering to confirm fitment. If you are unsure, consult your local Subaru dealership or use the part number to cross-reference compatibility.
This is a direct OEM replacement hose. Installation involves draining the coolant, removing the old hose (releasing the hose clamps), and installing the new hose. Refill with the correct Subaru coolant and bleed the system to remove air bubbles. Basic hand tools are required. Professional installation is recommended if you are unfamiliar with cooling system work or do not have the necessary equipment.
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