Subaru OEM Heater Hose - Outlet (15-19 Legacy - 25B) | 72421AL00B

Overview

The Genuine Subaru OEM Heater Hose – Outlet (Part #72421AL00B) is a factory-original coolant hose designed for precise fitment on 2015–2019 Subaru Legacy models equipped with the 2.5B engine. As a direct OEM replacement, this hose delivers the same exact dimensions, material composition, and performance characteristics as the hose installed at the factory, ensuring a leak-free seal and reliable heat transfer to your cabin. If you're looking for the best heater hose replacement for your 2015–2019 Subaru Legacy 2.5B, this genuine part eliminates the guesswork of aftermarket fitment.

Key Features & Benefits

• Genuine Subaru OEM Quality – Manufactured to Subaru's exact factory specifications, guaranteeing fit, form, and function identical to the original part.
• Exact-Fit Guarantee – Engineered specifically for the 2015–2019 Legacy 2.5B, so there's no trimming, adapting, or modification required.
• Premium Materials – Constructed from heat- and pressure-resistant rubber compounds that withstand the thermal demands of the engine cooling and heating system.
• Leak-Free Performance – Precision-molded ends ensure a secure, airtight connection at both the heater core outlet and the engine fitting, preventing coolant loss.
• Factory Warranty Coverage – Backed by Subaru's genuine parts warranty, giving you confidence in long-term reliability.
• Plug-and-Play Installation – Direct OEM replacement requires no special tools or modifications, making it suitable for DIY installation.

What's Included

• 1× Genuine Subaru OEM Heater Hose – Outlet (Part #72421AL00B)

Specifications

Fitment & Compatibility

This heater hose is a confirmed OEM fit for the following Subaru vehicles:

Always verify your VIN and engine code before ordering to confirm compatibility with your specific vehicle configuration.

Installation

This is a direct bolt-on, plug-and-play OEM replacement. Installation involves draining the coolant system, removing the old outlet hose, and clamping the new hose in place using the factory clamps. The job is suitable for experienced DIYers with basic hand tools. Professional installation is recommended if you are unfamiliar with coolant system service. Always allow the engine to cool completely before beginning work, and refill and bleed the cooling system properly after installation.