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Denso 221-9351 Radiator
| Brand | Denso 221-9351 |
|---|---|
| Core Height | 20.6700 |
| Core Thickness | 0.6300 |
| Core Width | 30.4000 |
| Transmission Oil Cooler Included | Yes |
| Inlet Diameter | 1.3600 |
| Outlet Diameter | 1.3400 |
| Product line | Radiator |
| Fits | Toyota · 6 vehicles |
OE experience. Built to meet strict OE standards for reliable fit and performance.
Transmission oil cooler included. Integrated cooling helps simplify radiator replacement.
Radiator performance is essential for proper engine cooling and function.
Cross-references APDI 8013449, CSF 3773 and DPI Performance Racing Products 13449 for the same application. See all 8.
Denso Radiator for Toyota Highlander
The Denso 221-9351 radiator is an OE-style cooling replacement built for 2014-2016 Toyota Highlander models with the towing package and 2017-2019 Toyota Highlander engine cooling applications. It combines OE-based fitment with a transmission oil cooler included, making it a direct choice for restoring cooling system performance on the Toyota Highlander.
Key Features
- Brand: Denso Radiator
- Part number: 221-9351
- Core height: 20.6700
- Core width: 30.4000
- Core thickness: 0.6300
- Inlet diameter: 1.3600
- Outlet diameter: 1.3400
- Transmission oil cooler included: Yes
- Fits 2014-2016 Toyota Highlander, w/ towing package
- Fits 2017-2019 Toyota Highlander, engine cooling; radiator
OE-Style Cooling Construction
Denso supplies radiators to OE vehicle manufacturers and applies that OE experience to this replacement radiator. The core dimensions, tank design, fin pitch, and materials are built to match manufacturer standards for fitment and cooling performance. Denso 221-9351 is engineered for reliable heat transfer and consistent operation under demanding driving conditions, including towing-focused Highlander applications.
This part cross-references Toyota (e.g., 16400-0P420) for the same application.
Common Problems This Radiator Can Address
- Engine overheating from a leaking or restricted radiator
- Coolant loss caused by cracked tanks or damaged core passages
- Transmission temperature concerns when the radiator cooler circuit is failing
- Reduced cooling efficiency in a high-load Toyota Highlander
- Fitment issues from using the wrong radiator for towing-package vehicles
Installation Notes
Verify the inlet and outlet diameters, core dimensions, and transmission cooler connections before installation. This radiator is listed for 2014-2016 Toyota Highlander models with the towing package and 2017-2019 Toyota Highlander engine cooling applications, so confirm your vehicle configuration before ordering. Proper system flushing, fresh coolant, and leak checks after installation help ensure stable cooling performance.
Quality Assurance
Denso radiators are built to OE standards and undergo durability and function testing before release. That quality process supports dependable fitment and cooling performance for Toyota Highlander applications, including the Denso 221-9351 radiator.
| Year | Make | Model | Fuel Type | Position | Notes |
|---|---|---|---|---|---|
| 2019 | Toyota | Highlander | FULL HYBRID EV-GAS (FHEV) | N/A | Engine Cooling; Radiator |
| 2018 | Toyota | Highlander | FULL HYBRID EV-GAS (FHEV) | N/A | Engine Cooling; Radiator |
| 2017 | Toyota | Highlander | FULL HYBRID EV-GAS (FHEV) | N/A | Engine Cooling; Radiator |
| 2016 | Toyota | Highlander | GAS | N/A | w/ Towing Package |
| 2015 | Toyota | Highlander | GAS | N/A | w/ Towing Package |
| 2014 | Toyota | Highlander | GAS | N/A | w/ Towing Package |
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