Subaru OEM Coolant Hose | 99078AB320

Overview

The Genuine Subaru OEM Coolant Hose (Part #99078AB320) is an exact-fit factory replacement hose engineered to maintain your Subaru's cooling system integrity. Designed and manufactured to Subaru's original specifications, this OEM coolant hose ensures reliable coolant flow, proper sealing, and long-lasting durability — keeping your engine running at the correct operating temperature. Ideal for Subaru owners who demand factory quality and a perfect fit over generic aftermarket alternatives.

Key Features & Benefits

• Genuine Subaru OEM Part — Manufactured to exact factory specifications for a guaranteed perfect fit and reliable performance, eliminating the guesswork of aftermarket alternatives.
• Exact-Fit Design — Engineered specifically for compatible Subaru models, ensuring proper routing, connection, and sealing without modification.
• High-Quality Materials — Constructed from durable, heat-resistant rubber compounds capable of withstanding the high temperatures and pressures of the Subaru cooling system.
• Prevents Coolant Leaks — Precise dimensions and factory-grade materials maintain a tight seal, protecting your engine from overheating and coolant loss.
• Backed by Subaru Quality Standards — Every genuine Subaru OEM part meets rigorous factory quality control requirements for dependable, long-term use.
• Direct Replacement — Replaces worn, cracked, or leaking coolant hoses with zero fitment issues for a straightforward service repair.

What's Included

• 1x Genuine Subaru OEM Coolant Hose (Part #99078AB320)

Specifications

Fitment & Compatibility

This Genuine Subaru OEM Coolant Hose (Part #99078AB320) is designed for compatible Subaru vehicles. Please verify fitment using your vehicle's year, make, model, and trim level before ordering. Subaru models may include the Outback, Forester, Impreza, Legacy, Crosstrek, WRX, Ascent, or BRZ depending on application. Use your VIN or consult the parts diagram on parts.subaru.com to confirm this is the correct hose for your specific vehicle.

Installation

This coolant hose is a direct OEM replacement designed for a straightforward, bolt-on installation. Basic hand tools and mechanical knowledge are recommended. Always allow the engine to cool completely before working on the cooling system, and properly drain and refill coolant to the correct level after replacement. Professional installation by a certified Subaru technician is recommended if you are not experienced with cooling system repairs.