Subaru OEM Engine Coolant Overflow Hose Forester XT 2014-2018 / WRX 2015-2021 | 99078AB291

Overview

The Genuine Subaru OEM Engine Coolant Overflow Hose (Part #99078AB291) is the factory-replacement coolant hose designed specifically for the 2014–2018 Subaru Forester XT and 2015–2021 Subaru WRX. This is an exact-fit OEM component manufactured to Subaru's original specifications, ensuring proper coolant flow, reliable sealing, and long-term durability in the engine cooling system. If your vehicle is showing signs of a coolant leak or the existing hose has become cracked or brittle, this genuine Subaru part is the correct, no-compromise replacement.

Key Features & Benefits

• Genuine Subaru OEM Quality — Manufactured to the same exacting standards as the original factory part, ensuring a perfect fit and reliable performance every time.
• Exact-Fit Design — Engineered specifically for 2014–2018 Subaru Forester XT and 2015–2021 Subaru WRX applications; no trimming, adapting, or modification required for installation.
• Factory-Grade Materials — Constructed from heat- and pressure-resistant materials rated for the thermal demands of the engine cooling system, resisting cracking and deterioration over time.
• Secure, Leak-Free Sealing — Precision molded to mate perfectly with the factory connections, eliminating the risk of misalignment or coolant leaks common with ill-fitting aftermarket alternatives.
• Backed by Subaru Factory Warranty — Comes with Subaru's standard OEM parts warranty for added peace of mind.
• Protects Your Engine Investment — A functioning coolant overflow hose is critical to cooling system integrity; replacing a worn hose promptly with an OEM part helps prevent overheating and costly engine damage.

What's Included

• 1x Genuine Subaru Engine Coolant Overflow Hose — Part #99078AB291

Specifications

Fitment & Compatibility

This engine coolant overflow hose is designed for the following Subaru vehicles:

2014-2018 Subaru Forester XT

2015-2021 Subaru WRX

Note: This hose is intended for the Forester XT and WRX applications listed in the fitment section above. Always verify your vehicle's transmission type and confirm the part number against your VIN before ordering.

Installation

This engine coolant overflow hose is a direct OEM replacement. Installation involves accessing the hose connections, draining the relevant coolant, removing the old hose, and fitting this replacement hose using the original clamps or new clamps as appropriate. The system should be refilled with the correct Subaru-approved coolant and inspected for leaks before returning the vehicle to service. While some experienced DIYers can perform this repair, professional installation by a qualified Subaru technician is recommended to ensure proper torque, sealing, and coolant fill procedures are followed.