Subaru OEM Heater Hose - Outlet Subaru WRX / STI / Forester / Forester XT / Impreza / Outback | 72421AG050

Overview

The Genuine Subaru OEM Heater Hose Out (Part #72421AG050) is an exact-fit factory replacement cooling/heating system component designed specifically for the following vehicles: 2009-2013 Subaru Forester, 2009-2013 Subaru Forester XT, 2008-2010 Subaru Impreza, 2008-2010 Subaru Outback, 2008-2014 Subaru STI, and 2008-2014 Subaru WRX. As an original equipment manufacturer part, it matches the precise dimensions, material specification, and routing of the hose that left the factory — ensuring a leak-free seal and proper coolant flow to your heater core. Choose OEM for guaranteed fitment and lasting reliability over generic aftermarket alternatives.

Key Features & Benefits

• Genuine Subaru OEM Quality — Manufactured to Subaru's exact factory specifications, ensuring the same fit, form, and function as the original part your vehicle was built with.
• Exact-Fit Guarantee — Engineered specifically for the vehicles listed in the Fitment & Compatibility section below; no trimming, adapters, or modifications required.
• Premium Heat & Pressure Resistance — Built to withstand the high-temperature coolant environment of a turbocharged EJ-series engine, resisting cracking, swelling, and deterioration over time.
• Leak-Free Performance — Factory-spec inner diameter and wall thickness deliver a secure, pressure-tight connection at both heater core and engine coolant ports.
• Maintains Heater System Efficiency — Proper coolant flow through an undamaged outlet hose keeps your cabin heater operating at full effectiveness year-round.
• Backed by Subaru's Factory Warranty — Genuine Subaru parts are covered under Subaru's OEM parts warranty when installed by an authorized dealer or qualified technician.

What's Included

• 1x Genuine Subaru Heater Hose Out — Part #72421AG050

Specifications

Fitment & Compatibility

This genuine Subaru heater outlet hose is confirmed to fit the following vehicles:

• 2009-2013 Subaru Forester
• 2009-2013 Subaru Forester XT
• 2008-2010 Subaru Impreza
• 2008-2010 Subaru Outback
• 2008-2014 Subaru STI
• 2008-2014 Subaru WRX

Always verify your vehicle's VIN and engine code before ordering. If you are unsure of fitment, consult your Subaru dealer with your full VIN.

Installation

Replacing the heater outlet hose is a straightforward cooling system service. The engine must be completely cool before beginning work. Drain the coolant to a safe level, remove the clamps securing the old hose at the heater core inlet and the engine-side port, and slide on the new OEM hose. Secure with the original clamps (or new OEM-spec clamps), refill with Subaru Super Coolant, and bleed the cooling system per the factory service manual procedure. While a confident DIYer can complete this repair, professional installation by a Subaru-trained technician is recommended to ensure a proper coolant system bleed and to protect your OEM warranty coverage.