APDI 9010071 HVAC Heater Core

APDI 9010071 Heater Core for GM HVAC Systems

APDI heater core 9010071 is a direct-fit HVAC heater core for GM applications that use an aluminum core and aluminum tanks. With a compact 7 in. core height, 7-1/2 in. core width, and 2 in. core thickness, it is built for vehicles that need a precise replacement heater core for dependable cabin heat.

Compatible With Buick Riviera, Cadillac Eldorado, Cadillac Seville, Oldsmobile Toronado, and other GM models listed below, this heater core is sized for specific factory HVAC layouts. APDI 9010071 also cross-references Spectra Premium 94546 for the same application.

Key Features

• Aluminum core construction for efficient heat transfer
• Aluminum tank material for a lightweight, corrosion-resistant design
• Core dimensions: 7 in. height, 7-1/2 in. width, 2 in. thickness
• Inlet pipe diameter: 5/8 in.
• Outlet pipe diameter: 3/4 in.
• GM heater core replacement for select A-body and E-body applications

Detailed Description

APDI 9010071 is an HVAC heater core engineered for GM vehicles that require the listed inlet and outlet sizes and the specified aluminum construction. The APDI Heater Core line focuses on replacement heating components, and this unit is sized for factory-style fitment in vehicles such as 1973-1977 Buick Century, 1973-1977 Chevrolet Malibu, 1973-1977 Pontiac Grand Prix, and 1979-1985 Cadillac Eldorado. It is also listed for 1979-1985 Buick Riviera and 1979-1985 Oldsmobile Toronado.

This part number, 9010071, is a practical replacement choice when restoring heater performance in GM cars with AC-equipped HVAC systems. The aluminum core and tank materials support consistent heat exchange in the heater box, while the compact dimensions help match the original HVAC case layout.

What It Helps Solve

• Weak or no cabin heat from a restricted heater core
• Coolant seepage from a leaking heater core assembly
• Uneven defrost performance caused by poor heater output
• HVAC heat loss in older GM vehicles with aging core internals
• Replacement needs during heater box service or cooling system repair

Installation Notes and Tips

Verify inlet and outlet pipe diameters before installation: 5/8 in. inlet and 3/4 in. outlet. Confirm the vehicle’s HVAC configuration and compare the core dimensions to the original unit before reassembly. For best results, flush the cooling system and inspect hoses, clamps, and the heater control valve or related HVAC components while the system is open.

Fits 1973-1977 Buick Century, with AC; 1973-1977 Buick Regal, with AC; 1979-1985 Buick Riviera; 1973-1977 Chevrolet El Camino, with AC; 1973-1977 Chevrolet Malibu, with AC; 1973-1976 Chevrolet Monte Carlo, with AC; 1979-1985 Cadillac Eldorado; 1980-1985 Cadillac Seville; 1973-1977 Oldsmobile Custom Cruiser, with AC; 1973-1977 Oldsmobile Cutlass, with AC; 1975-1977 Oldsmobile Cutlass Salon, with AC; 1973-1977 Oldsmobile Cutlass Supreme, with AC; 1979-1985 Oldsmobile Toronado; 1973-1977 Pontiac Grand LeMans, with AC; 1973-1977 Pontiac Grand Prix, with AC; 1973-1977 Pontiac LeMans, with AC; 1973-1975 Pontiac Grand Am, with AC.

Quality Assurance

APDI heater cores are built as replacement HVAC components for specific vehicle applications, with construction and dimensions listed to support accurate part matching. Part number 9010071 is cataloged with multiple interchange references, including Spectra Premium 94546, for the same application.