Subaru OEM Coolant Overflow Hose (15-21 WRX) | 45162AG021

Overview

The Genuine Subaru OEM Coolant Overflow Hose (Part # 45162AG021) is an exact-fit factory replacement hose designed specifically for 2015–2021 Subaru WRX models. This hose connects the radiator coolant reservoir to the cooling system, ensuring proper coolant recovery and preventing overheating. Choosing a genuine OEM part guarantees factory-level fit, materials, and durability — no modifications required.

Key Features & Benefits

• Genuine Subaru OEM Quality — Manufactured to Subaru's exact factory specifications, ensuring reliable performance and a perfect fit every time.
• Exact-Fit Replacement — Engineered specifically for 2015–2021 WRX applications, eliminating the guesswork of aftermarket fitment concerns.
• Factory-Grade Materials — Constructed from heat-resistant rubber compound to withstand the high-temperature environment of the engine bay and resist degradation over time.
• Maintains Cooling System Integrity — Properly routes coolant between the overflow reservoir and the radiator, preventing air pockets and maintaining optimal engine temperature.
• Factory Warranty Coverage — As a genuine Subaru part, eligible for Subaru's OEM parts warranty for added peace of mind.
• Direct OEM Replacement — No cutting, clamping, or adapters needed; installs just like the original factory hose.

What's Included

• 1x Genuine Subaru Coolant Overflow Hose (Part # 45162AG021)

Specifications

Fitment & Compatibility

This genuine Subaru coolant overflow hose is compatible with the following vehicles:

Always verify your vehicle's part number against the Subaru parts catalog or your VIN to confirm compatibility before ordering.

Installation

This coolant overflow hose is a straightforward bolt-on (hose-on) replacement that can typically be completed with basic hand tools. Drain the coolant reservoir before removal, disconnect the old hose at both ends, and route the new hose in the same path. It is recommended to inspect clamps and the reservoir cap during replacement. For those unfamiliar with cooling system service, professional installation by a qualified Subaru technician is advised to ensure the system is properly refilled and bled of air.