Subaru OEM Coolant Crossover Hose (03-05 Forester) | 21204AA162

Overview

The Genuine Subaru OEM Coolant Crossover Hose (Part #21204AA162) is a factory-replacement cooling system hose designed specifically for 2003–2005 Subaru Forester models. As an authentic OEM component sourced directly from Subaru, this hose ensures a precise fit and reliable coolant flow between engine components, helping maintain optimal operating temperatures and preventing costly overheating damage.

Key Features & Benefits

• Genuine Subaru OEM Quality — Manufactured to exact factory specifications, guaranteeing compatibility and performance equal to the original part installed at the factory.
• Exact-Fit Design — Engineered specifically for the 2003–2005 Forester, eliminating guesswork and ensuring leak-free installation without modification.
• Factory-Grade Materials — Constructed from durable, heat-resistant rubber compound that withstands the thermal cycling demands of the Subaru EJ-series engine bay.
• Maintains Cooling System Integrity — Properly routes coolant across engine components, helping sustain consistent coolant pressure and preventing air pockets that can cause overheating.
• Backed by Subaru — Covered under Subaru's OEM parts warranty for peace of mind after installation.
• Direct Replacement — Drop-in replacement for the original crossover hose with no trimming, adapters, or special tools required beyond standard hand tools.

What's Included

• 1x Genuine Subaru Coolant Crossover Hose (Part #21204AA162)

Specifications

Fitment & Compatibility

This coolant crossover hose is a direct OEM replacement for the following Subaru vehicles:

Always verify your vehicle's VIN and current part number before ordering to confirm fitment for your specific trim level and engine configuration.

Installation

This coolant crossover hose is a straightforward bolt-on replacement for experienced DIYers comfortable working on cooling systems. The job typically involves draining coolant, removing hose clamps, swapping the hose, and refilling with the correct Subaru Super Coolant. Professional installation is recommended if you are unfamiliar with cooling system service to avoid air lock or improper torque on clamps. Always allow the engine to cool completely before beginning work.