One Stop Solutions 99078 HVAC Heater Core

Overview of One Stop Solutions HVAC Heater Core 99078

The One Stop Solutions HVAC Heater Core 99078 is designed for reliable heating performance in select Lexus and Toyota vehicles. This heater core is compatible with Lexus GX470 and Toyota 4Runner and FJ Cruiser models, providing efficient cabin heat transfer and climate control.

• Compatible with Lexus GX470, Toyota 4Runner, and FJ Cruiser
• OEM-quality HVAC heater core replacement part
• Part number 99078 for precise fitment
• Durable construction for long-lasting operation
• Designed to integrate with existing HVAC systems

Product Details and Specifications

The HVAC heater core 99078 from One Stop Solutions is engineered to meet the specific heating requirements of the Lexus GX470 and Toyota 4Runner and FJ Cruiser models. This component functions as a heat exchanger, transferring engine coolant heat to the vehicle’s interior ventilation system. Constructed with corrosion-resistant materials, it ensures consistent performance and durability under varying operating conditions. The heater core is designed to fit directly into the OEM housing, simplifying replacement and maintaining factory HVAC system efficiency.

Applications and Common Issues Addressed

This heater core is used to restore proper heating function in the vehicle’s HVAC system. It is a direct replacement part for the following issues:

• Insufficient cabin heat output
• Coolant leaks inside the vehicle
• Fogging or moisture buildup on interior windows
• Unusual odors from the HVAC vents
• Overheating or coolant loss related to heater core failure

Installation Notes and Tips

Installation of the One Stop Solutions heater core 99078 requires removal of the dashboard and HVAC housing in the Lexus GX470 or Toyota 4Runner and FJ Cruiser. It is recommended to drain the cooling system before removal to prevent coolant spillage. Careful handling is necessary to avoid damage to the fins and tubes of the heater core. After installation, refill and bleed the cooling system to remove air pockets and verify proper heater operation.

Quality Assurance and Warranty Information

One Stop Solutions provides this HVAC heater core with quality standards that meet or exceed OEM specifications. The part number 99078 undergoes rigorous testing to ensure durability and performance. Warranty coverage details should be confirmed at the time of purchase, but typically include protection against manufacturing defects for a specified period.