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Denso 221-9646 Radiator
| Brand | Denso 221-9646 |
|---|---|
| Core Height | 13.78 |
| Core Thickness | 0.63 |
| Core Width | 27.2 |
| Transmission Oil Cooler Included | No |
| Inlet Diameter | 1.56 |
| Outlet Diameter | 1.56 |
| Product line | Radiator |
| Fits | Subaru · 10 vehicles |
OE-style replacement. Built to match original radiator configuration and fitment requirements.
OE supplier experience. Denso applies original-equipment know-how to radiator design and performance.
Durability tested. Each radiator passes function and durability checks before release.
Cross-references APDI 8013461, Bosch 13461 and CSF 3802 for the same application. See all 7.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Radiator for Subaru Legacy and Outback
This Denso radiator, part number 221-9646, is built for direct OE-style cooling system replacement on select Subaru applications. It combines OE-level configuration details with tested durability to support consistent engine temperature control.
- OE-style radiator construction for accurate fitment and cooling performance.
- Core dimensions of 27.2 in. wide, 13.78 in. high, and 0.63 in. thick.
- 1.56 in. inlet and outlet diameters for proper hose connection sizing.
- Transmission oil cooler not included.
- Engineered to meet OE manufacturer standards for tanks, fin pitch, core dimensions, and materials.
Detailed Fitment and Design
Fits 2015-2019 Subaru Legacy, N/A. Fits 2015-2019 Subaru Outback, N/A. Denso applies OE supplier experience to this radiator, using configuration details that match original equipment requirements for cooling system performance and fitment. The radiator is designed around the specified core size and connection diameters, making it a practical replacement for Subaru Legacy and Subaru Outback cooling service when the original unit is worn, leaking, or no longer performing as intended. This part number 221-9646 is also cross-referenced to Monroe Shocks & Struts (e.g., 41-13461, 45111AL04A) for the same application.
Common Replacement Reasons
- Coolant leaks from a damaged or aging radiator core.
- Overheating caused by reduced heat transfer efficiency.
- Cracked or weakened radiator tanks.
- Incorrect hose fit from a worn or mismatched replacement unit.
- Transmission cooling service when the original radiator is no longer functioning properly.
Installation Notes and Quality
Verify hose connection sizes, core dimensions, and transmission cooler requirements before installation. Confirm vehicle application details against the existing cooling system layout to ensure proper fit. Denso subjects its radiators to durability and function testing, and its OE supply background supports consistent fitment and performance. Part number 221-9646 is built to meet strict OE standards for radiator construction and reliability.
| Year | Make | Model | Submodel | Notes |
|---|---|---|---|---|
| 2019 | Subaru | Legacy | — | OE; Radiator |
| 2019 | Subaru | Outback | — | OE; Radiator |
| 2018 | Subaru | Legacy | — | OE; Radiator |
| 2018 | Subaru | Outback | — | OE; Radiator |
| 2017 | Subaru | Legacy | — | OE; Radiator |
| 2017 | Subaru | Outback | — | OE; Radiator |
| 2016 | Subaru | Legacy | — | OE; Radiator |
| 2016 | Subaru | Outback | — | OE; Radiator |
| 2015 | Subaru | Legacy | 2.5i | OE; Radiator |
| 2015 | Subaru | Outback | 2.5i | OE; Radiator |
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