Subaru OEM Coolant Crossover Hose (04-05 Forester) | 21204AA770

Overview

The Genuine Subaru OEM Coolant Crossover Hose (Part #21204AA770) is an exact-fit factory replacement coolant hose designed specifically for the 2004–2005 Subaru Forester. This OEM-quality hose ensures a precise seal and reliable coolant flow between engine components, helping maintain optimal operating temperature and preventing costly overheating. If you're restoring your Forester's cooling system to factory spec, this is the correct part — not an approximation.

Key Features & Benefits

• Genuine Subaru OEM Quality — Manufactured to the same exact standards as the original part installed at the factory, ensuring a perfect fit and long-lasting performance.
• Exact-Fit Guarantee — Engineered specifically for the 2004–2005 Subaru Forester; no trimming, adapting, or modification required.
• Factory-Grade Materials — Constructed from heat- and coolant-resistant rubber to withstand the thermal cycling and chemical exposure of a demanding cooling system environment.
• Leak-Free Sealing — OEM hose geometry and durometer match original routing and clamp interfaces precisely, minimizing the risk of leaks or premature failure.
• Backed by Subaru's Factory Warranty — Genuine Subaru parts are covered under Subaru's OEM parts warranty when installed per factory guidelines.
• Direct OEM Cross-Reference — Part number 21204AA770 allows for straightforward cross-referencing with dealer records and factory service manuals.

What's Included

• 1 × Genuine Subaru Coolant Crossover Hose (Part #21204AA770)

Specifications

Fitment & Compatibility

This coolant crossover hose is designed for the following Subaru vehicles:

Always verify fitment using your vehicle's VIN or consult a Subaru dealer parts advisor to confirm compatibility with your specific trim level and engine variant.

Installation

This coolant crossover hose is a direct OEM replacement and installs in the same location as the original factory hose. Installation involves draining the cooling system, removing the old hose and clamps, and routing the new hose per the factory service manual. While a mechanically experienced DIYer can complete this repair, professional installation is recommended to ensure proper torque on clamps and a complete coolant system bleed. Always allow the engine to cool completely before beginning any cooling system work.