APDI 9010274 HVAC Heater Core

APDI 9010274 Heater Core for GM HVAC Repair

The APDI 9010274 heater core is a GM heater core built with a copper brass core and brass tanks for HVAC service work. Its V-cell construction and compact dimensions make it a direct-fit style replacement for select GM heater core applications where cabin heat output and coolant transfer matter.

Key Features

• APDI Heater Core, part number 9010274
• V-cell construction for efficient heat exchange
• Copper brass core material with brass tank material
• Core dimensions: 6-3/8 in. height, 5-5/8 in. width, 2-1/2 in. thickness
• Inlet pipe diameter: 3/4 in.; outlet pipe diameter: 5/8 in.
• Built for GM heater core service applications

Product Details

APDI’s Heater Core line focuses on HVAC replacement parts for heating system repair, and the 9010274 follows that approach with a copper brass heat exchanger design. The V-cell core layout supports coolant flow through the heater core assembly, while the brass tanks and tube sizing help match the original HVAC plumbing on select GM vehicles. This part number 9010274 is a practical choice when servicing a leaking, restricted, or heat-losing heater core in GM applications, including Chevrolet and GMC models where cabin heat performance is affected.

This part cross-references Four Seasons 98477 for the same application.

Common Problems This Part Can Address

• Weak or uneven cabin heat
• Coolant odor inside the vehicle from a heater core leak
• Fogging or film on the windshield caused by HVAC coolant seepage
• Restricted coolant flow through the heater core
• Heating system performance loss in GM HVAC repair jobs

Installation Notes and Tips

Verify inlet and outlet pipe diameters, core dimensions, and HVAC case fitment before installation. Inspect hoses, clamps, and coolant condition during replacement, and flush the cooling system if contamination or debris is present. For GM heater core service, confirm the replacement core matches the original routing and mounting layout before reassembly.

Quality Assurance

APDI manufactures this heater core as an aftermarket HVAC replacement component for GM applications. The copper brass construction and brass tank design provide a serviceable replacement option for technicians and DIY repairs focused on restoring heater performance.