Subaru OEM Coolant Crossover Hose (18-19 Crosstrek - 20D) | 21204AB370

Overview

The Genuine Subaru OEM Coolant Crossover Hose (Part #21204AB370) is an exact-fit factory replacement hose designed specifically for 2018–2019 Subaru Crosstrek models equipped with the 2.0L engine (engine designation 20D). Engineered to Subaru's original factory specifications, this hose ensures proper coolant flow between engine components, helping maintain optimal operating temperature and preventing overheating. Choosing a Genuine Subaru part guarantees a precise fit, factory-grade materials, and lasting reliability — no modifications or adapters required.

Key Features & Benefits

• Genuine Subaru OEM Quality — Manufactured to the exact factory specifications your Crosstrek was built with, ensuring proper fit and long-term durability.
• Exact-Fit Replacement — Designed specifically for 2018–2019 Subaru Crosstrek 20D applications; no trimming, adapting, or modification needed.
• Optimal Coolant Flow — Maintains proper coolant circulation across engine components to prevent overheating and protect engine health.
• Factory-Grade Materials — Constructed from OEM-spec rubber and reinforcement materials engineered to withstand high coolant temperatures and engine bay conditions.
• Factory Warranty Coverage — Backed by Subaru's genuine parts warranty, giving you confidence in every mile driven.
• Direct OEM Cross-Reference — Subaru Part Number 21204AB370 allows for precise identification and fitment verification.

What's Included

• 1x Genuine Subaru Coolant Crossover Hose — Part #21204AB370

Specifications

Fitment & Compatibility

This Genuine Subaru Coolant Crossover Hose is confirmed to fit the following vehicles:

Always verify your vehicle's engine designation (20D) before ordering. Part number 21204AB370 is your exact reference for fitment confirmation.

Installation

This coolant crossover hose is a direct OEM replacement and is designed for straightforward installation using standard hand tools. Allow the engine to cool completely before beginning any coolant system work. Drain coolant as necessary, remove the old hose, and install this genuine replacement. Retighten all clamps to factory torque specifications and refill with the appropriate Subaru-approved coolant. Professional installation is recommended if you are not familiar with automotive cooling system service.