Spectra 99318 HVAC Heater Core - Front

Spectra 99318 HVAC Heater Core for Toyota Sienna

Spectra 99318 is an HVAC heater core for 2004-2006 Toyota Sienna front applications. It is built to match the performance expectations of the original equipment unit it replaces, with manufacturing controls focused on fit, function, and consistency.

For drivers searching for a 2004-2006 Toyota Sienna front heater core replacement, this Spectra unit provides a direct-fit solution for restoring cabin heat performance. The Spectra Premium 99318 is also a common cross-reference for related aftermarket listings under the same application.

Key Features

• Direct replacement HVAC heater core for front installation
• Fits 2004-2006 Toyota Sienna, front
• Built with engineering and quality control standards aimed at OE-level performance
• Supports proper coolant-to-air heat transfer inside the HVAC system
• Part number 99318 for easy catalog matching

Detailed Description

The Spectra 99318 heater core is designed for the front HVAC system in the Toyota Sienna across the 2004, 2005, and 2006 model years. If your vehicle has weak cabin heat, uneven temperature output, or a leaking heater core, this replacement helps restore normal heater operation. This part cross-references APDI 9010495 for the same application.

Use this heater core when servicing a 2004-2006 Toyota Sienna front heater core replacement and you need a part that aligns with the original equipment layout. The Spectra 99318 name appears in aftermarket catalogs as a direct reference for this fitment.

What It Helps Fix

• Loss of cabin heat
• Coolant odor inside the vehicle
• Fogging from a leaking heater core
• Uneven or reduced airflow heat output
• Coolant seepage in the HVAC housing

Installation Notes and Tips

Fits 2004-2006 Toyota Sienna, front. Confirm the vehicle’s HVAC configuration and compare the original heater core before installation. Drain and refill coolant as required during service, and inspect hoses, clamps, and seals for wear while the system is open.

Quality Assurance

Spectra Premium states that its engineering, manufacturing technology, and quality control are used to help heater cores meet or exceed the performance of the original equipment they replace. Part number 99318 is cataloged for OE-style replacement use in the Toyota Sienna front HVAC system.