Subaru OEM Engine Coolant Hose Impreza 2017-2023 | 21204AB39A

Overview

The Genuine Subaru OEM Engine Coolant Hose (Part #21204AB39A) is a factory-replacement cooling system hose designed for 2017–2023 Subaru Impreza models. Built to exact OEM specifications, this engine coolant hose ensures a precise fit and reliable sealing to maintain proper engine coolant flow and operating temperature. Choosing a Genuine Subaru part guarantees factory quality, materials, and compatibility — protecting your engine from overheating and coolant leaks.

Key Features & Benefits

• Genuine Subaru OEM Part — Manufactured to factory specifications for guaranteed fit, form, and function with no modification required.
• Exact-Fit Replacement — Engineered specifically for the 2017–2023 Subaru Impreza, eliminating fitment guesswork and ensuring a leak-free seal.
• Premium OEM Materials — Constructed from high-quality, heat-resistant rubber compounds that withstand the thermal demands of Subaru's horizontally-opposed (Boxer) engine cooling system.
• Maintains Proper Coolant Flow — Restores the coolant circuit to factory performance, helping regulate engine temperature and prevent overheating.
• Factory Warranty Backed — Covered under Subaru's genuine parts warranty for added peace of mind.
• Direct OEM Cross-Reference — Replaces worn, cracked, or leaking coolant hoses using the exact Subaru part number 21204AB39A.

What's Included

• 1x Genuine Subaru Engine Coolant Hose — Part #21204AB39A

Specifications

Fitment & Compatibility

This Genuine Subaru Engine Coolant Hose is designed to fit the following vehicles:

2017-2023 Subaru Impreza

Please verify your vehicle's year and model before ordering. If you have questions about fitment for your specific Impreza trim level, consult your Subaru dealer or reference part number 21204AB39A.

Installation

This engine coolant hose is a direct OEM replacement and installs in the same location as the factory hose. Installation typically involves draining the cooling system, removing the old hose and clamps, and securing the new hose in place. While a mechanically inclined DIYer can complete this job, professional installation by a certified Subaru technician is recommended to ensure proper coolant system bleeding and torque specifications are met.