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The Genuine Subaru OEM Coolant Crossover Hose (Part #21204AB440) is an exact-fit factory replacement cooling system component designed specifically for 2020–2025 Subaru Legacy 2.5D models. As a true OEM part manufactured to Subaru's precise engineering standards, this hose ensures leak-free coolant flow and long-term cooling system integrity — the same quality found in your Legacy from the factory.
| Part Number | 21204AB440 |
|---|---|
| Brand | Genuine Subaru OEM |
| Component Type | Coolant Crossover Hose |
| Material | OEM-grade heat/pressure resistant rubber |
| Finish | OEM factory finish |
| Condition | New, Genuine OEM |
This coolant crossover hose is designed for the following Subaru vehicles:
| Year Range | Model | Trim / Engine |
|---|---|---|
| 2020–2025 | Legacy | 2.5D |
Always verify your vehicle's specific year, model, and trim before ordering. Use Subaru part number 21204AB440 to confirm fitment with your dealer or parts catalog.
This is a direct OEM replacement hose that installs in the same location as the factory part with no cutting, splicing, or modification required. While many experienced DIYers can perform cooling system hose replacements, we recommend draining and properly disposing of coolant before removal and having the cooling system pressure-tested after installation. If you are unfamiliar with cooling system service, professional installation by a Subaru-trained technician is advised to ensure system integrity.
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