OE Quality
60-Day Returns

Universal Air HT400021C HVAC Heater Core - Rear
Reliable HVAC Heater Core Replacement for Toyota Highlander
The Universal Air Heater Core Aluminum HT400021C is designed specifically for Toyota Highlander models, providing efficient heating performance and durability. This HVAC heater core ensures your vehicle's heating system operates smoothly during colder months.
- Compatible with Toyota Highlander models
- Part number HT400021C for precise identification
- Constructed from durable aluminum for enhanced heat transfer
- Direct replacement for OEM heater core units
- Designed to integrate seamlessly with existing HVAC systems
About the Universal Air Heater Core Aluminum Product Line
The Heater Core Aluminum line by Universal Air focuses on delivering heater cores made from aluminum, which offers improved heat dissipation and corrosion resistance compared to traditional materials. This product line is engineered to meet the specific requirements of various vehicle models, including the Toyota Highlander, ensuring reliable heating performance and longevity.
Product Details and Compatibility
The HT400021C heater core is an HVAC component that replaces the original heater core in Toyota Highlander vehicles. Its aluminum construction allows for efficient heat exchange, helping to maintain a comfortable cabin temperature. This part is categorized under HVAC motors, cores, cases, and related components, emphasizing its role in the vehicle's heating and ventilation system.
Common Issues Addressed by This Heater Core
- Insufficient cabin heating during cold weather
- Coolant leaks inside the vehicle cabin
- Fogging or moisture buildup on windows due to heater core failure
- Unusual odors from the HVAC system
- Overheating of the engine caused by heater core malfunction
Installation Notes and Tips
Installation of the HT400021C heater core should be performed by a qualified technician familiar with Toyota Highlander HVAC systems. Proper flushing of the cooling system is recommended before installation to prevent contamination. Ensure all connections are secure and check for leaks after installation to maintain system integrity.
Quality Assurance and Warranty
Universal Air provides this heater core with quality standards that meet or exceed OEM specifications. While specific warranty details are not provided here, Universal Air products typically come with a limited warranty covering defects in materials and workmanship. Verify warranty terms with the supplier or manufacturer.
This part fits 18 vehicles. Search below:
| Year | Make | Model | Submodel | Position | Notes |
|---|---|---|---|---|---|
| 2019 | Toyota | Highlander | Rear | Heater Core Aluminum | |
| 2018 | Toyota | Highlander | Rear | Heater Core Aluminum | |
| 2017 | Toyota | Highlander | Rear | Heater Core Aluminum | |
| 2016 | Toyota | Highlander | Rear | Heater Core Aluminum | |
| 2015 | Toyota | Highlander | Rear | Heater Core Aluminum | |
| 2014 | Toyota | Highlander | Rear | Heater Core Aluminum | |
| 2013 | Toyota | Highlander | Rear | Heater Core Aluminum | |
| 2012 | Toyota | Highlander | Rear | Heater Core Aluminum | |
| 2011 | Toyota | Highlander | Rear | Heater Core Aluminum | |
| 2010 | Toyota | Highlander | Rear | Heater Core Aluminum | |
| 2009 | Toyota | Highlander | Limited | Rear | Heater Core Aluminum |
| 2009 | Toyota | Highlander | Base | Rear | Heater Core Aluminum |
| 2009 | Toyota | Highlander | Hybrid | Rear | Heater Core Aluminum |
| 2009 | Toyota | Highlander | Sport | Rear | Heater Core Aluminum |
| 2009 | Toyota | Highlander | Base Premium | Rear | Heater Core Aluminum |
| 2009 | Toyota | Highlander | Sport Premium | Rear | Heater Core Aluminum |
| 2009 | Toyota | Highlander | Hybrid Limited | Rear | Heater Core Aluminum |
| 2008 | Toyota | Highlander | Rear | Heater Core Aluminum |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.