APDI 9010453 HVAC Heater Core

APDI 9010453 Heater Core for GM HVAC Repair

The APDI 9010453 heater core is a direct-fit HVAC heater core for GM applications that need reliable cabin heat and stable coolant flow through the heater system. Built with aluminum construction, aluminum core material, and aluminum tank material, it matches the compact dimensions required for select Chevrolet Malibu, Pontiac G6, and Saturn Aura models.

APDI’s Heater Core line focuses on replacement HVAC core components for GM vehicles, giving technicians a practical option when servicing heat output, coolant transfer, or a leaking heater core. This APDI 9010453 heater core is sized for the factory-style heater box layout and uses 5/8-inch inlet and 3/4-inch outlet pipe diameters.

Key Features

• APDI heater core, part number 9010453
• Aluminum construction for the core and tanks
• Core dimensions: 7-3/8 in. height, 7-1/4 in. width, 1 in. thickness
• Inlet pipe diameter: 5/8 in.
• Outlet pipe diameter: 3/4 in.
• OE-style HVAC replacement for GM heater core service
• This part cross-references OSC 99305 for the same application.

Detailed Description

Built for GM heater core replacement service, the APDI 9010453 is a compact aluminum heater core that supports heat transfer inside the HVAC system. Its 7-3/8-inch by 7-1/4-inch core size and 1-inch thickness help it align with the factory heater case, while the aluminum core and tank materials provide a lightweight, corrosion-resistant construction commonly used in modern cooling and heating components. Compatible With 2004-2012 Chevrolet Malibu, N/A; 2005-2010 Pontiac G6, N/A; and 2007-2009 Saturn Aura, N/A. Fits 2004-2012 Chevrolet Malibu, N/A. Fits 2005-2010 Pontiac G6, N/A. Fits 2007-2009 Saturn Aura, N/A. The APDI 9010453 is a practical choice when replacing a leaking or restricted heater core in these GM platforms.

What It Helps Address

• Weak or inconsistent cabin heat
• Coolant odor inside the vehicle
• Moisture on the windshield from HVAC system leakage
• Restricted coolant flow through the heater circuit
• Heater core leakage in GM HVAC systems

Installation Notes and Tips

Verify inlet and outlet pipe sizes before installation and compare the core dimensions to the original unit. Flush the cooling system and inspect hoses, clamps, and HVAC seals before installing the replacement heater core. On Chevrolet Malibu, Pontiac G6, and Saturn Aura applications, access typically requires removal of HVAC trim or case components, so confirm the vehicle-specific service procedure before beginning work.

Quality Assurance

APDI supplies HVAC replacement components for GM applications, and this heater core is built with aluminum core and tank construction to match common OE-style service requirements.