Global Parts 8231665 HVAC Heater Core - Rear

Global Parts 8231665 Rear Heater Core

Global Parts 8231665 is a specific-fit HVAC heater core for the rear heating circuit on select Toyota Sienna models. Built from aluminum, it transfers heat from the engine cooling system into the cabin to support rear passenger comfort and stable heater performance.

Key Features

• Specific-fit replacement for the rear HVAC system
• Aluminum construction for efficient heat transfer
• Fits 2004-2010 Toyota Sienna, rear
• Direct application for rear heater core service on Toyota Sienna vehicles
• Part number 8231665 for accurate ordering and catalog lookup

Detailed Description

This heater core is made for 2004-2010 Toyota Sienna rear HVAC applications and is engineered as a specific-fit component rather than a universal part. In the vehicle’s heating system, the heater core uses engine coolant flow to transfer heat into the cabin air stream, helping restore rear heat output when the original core is restricted, leaking, or no longer transferring heat effectively. Global Parts 8231665 is an aluminum unit selected for thermal efficiency and fitment accuracy in the rear position.

This part cross-references Edelmann 92149 for the same application.

What It Helps Fix

• Weak or uneven rear cabin heat in a Toyota Sienna
• Coolant odor or dampness from a leaking heater core
• Restricted heat transfer caused by internal blockage or corrosion
• Rear HVAC performance loss on 2004-2010 Toyota Sienna models
• Temperature inconsistency in the rear passenger area

Installation Notes and Tips

Confirm rear-position fitment before installation and verify the vehicle year against the listed application. Inspect coolant condition, hoses, and related HVAC components during service so the replacement core is not affected by contamination or flow restriction. Proper bleeding of the cooling system after installation is important to restore heater performance and prevent air pockets.

Quality Assurance

Global Parts supplies application-specific HVAC components for direct replacement use. This heater core is listed with confirmed fitment for 2004-2010 Toyota Sienna rear applications and uses aluminum construction for the intended heat-transfer function.