Global Parts 8231261 HVAC Heater Core

HVAC Heater Core for GM A-Body Applications

Global Parts 8231261 is an aluminum HVAC heater core built to transfer engine coolant heat into the cabin through the vehicle’s heating system. It is a direct-fit style replacement for a wide range of GM intermediate and full-size applications, including Chevrolet Monte Carlo, Oldsmobile Cutlass Supreme, and Buick Regal models.

• Aluminum core material for efficient heat transfer
• Core height: 5.8 in.
• Core width: 7.24 in.
• Core thickness: 1.02 in.
• Inlet diameter: 0.63 in.
• Adjustable pipe positioning: No

Detailed Product Overview

This heater core is designed for vehicles that route heated coolant through the HVAC system to warm the passenger compartment. Global Parts 8231261 matches the listed dimensions and inlet size for applications such as 1978-1988 Chevrolet Monte Carlo, 1978-1987 Buick Regal, and 1978-1987 Chevrolet El Camino, along with additional Oldsmobile and Pontiac models listed below. This part cross-references APDI 9010089 and TYC 96025 for the same application.

Compatible With 1978-1988 Chevrolet Monte Carlo, N/A; 1978-1987 Buick Regal, N/A; 1978-1987 Chevrolet El Camino, N/A; and other listed GM platforms where the heater core dimensions and inlet configuration match. Part number 8231261 is also referenced in aftermarket catalogs for related HVAC service applications.

What This Heater Core Helps Address

• Weak or no cabin heat from a restricted or leaking heater core
• Coolant odor or moisture inside the HVAC case
• Uneven defrost performance caused by poor heater output
• Temperature control issues tied to heat exchanger failure
• Service replacement for aging aluminum heater core assemblies

Installation Notes and Tips

Verify core height, width, thickness, and inlet diameter before installation. Confirm the vehicle’s HVAC layout and coolant hose routing, especially on 1982-1983 Buick Regal and 1978-1981 Buick Century models equipped with air conditioning, as noted in the fitment data. Flush the cooling system and inspect hoses, clamps, and the heater control valve before installing the new core.

Quality Assurance

Global Parts supplies this heater core as an aluminum replacement component for listed GM applications. Use the confirmed fitment data and dimensional specifications to match the part to the vehicle before service.

Vehicle Fitment

• Fits 1978-1988 Chevrolet Monte Carlo, N/A
• Fits 1978-1988 Oldsmobile Cutlass Supreme, N/A
• Fits 1978-1987 Buick Regal, N/A
• Fits 1978-1987 Chevrolet El Camino, N/A
• Fits 1985-1987 Oldsmobile Cutlass, N/A
• Fits 1978-1981 Oldsmobile Cutlass, N/A
• Fits 1985-1987 Oldsmobile Cutlass Salon, N/A
• Fits 1978-1980 Oldsmobile Cutlass Salon, N/A
• Fits 1978-1987 Pontiac Grand Prix, N/A
• Fits 1982-1986 Pontiac Bonneville, N/A
• Fits 1978-1984 Oldsmobile Cutlass Calais, N/A
• Fits 1982-1983 Buick Regal, N/A, fits models equipped with air conditioning.
• Fits 1978-1981 Buick Century, N/A, fits models equipped with air conditioning.
• Fits 1978-1981 Pontiac LeMans, N/A
• Fits 1979-1980 Pontiac Grand Am, N/A