Global Parts 8231359 HVAC Heater Core

HVAC Heater Core for Buick, Cadillac, and Chevrolet

Restore cabin heat with this Global Parts HVAC heater core, part number 8231359. It transfers heat from the engine cooling system into the passenger compartment and is built with an aluminum core for efficient thermal transfer.

Key Features

• Aluminum heater core construction
• Core height: 6.125 in.
• Core width: 8.2 in.
• Core thickness: 1.25 in.
• Inlet diameter: 5/8 in.
• Adjustable pipe positioning: No
• Direct-fit replacement for select GM applications

Product Details

Global Parts 8231359 is an HVAC heater core engineered for vehicles that rely on engine coolant flow to produce heat inside the cabin. Its aluminum construction supports heat transfer while keeping the core compact for the specified housing dimensions. This part number 8231359 is listed for 1994-1996 Buick Roadmaster, 1994-1996 Chevrolet Caprice, 1994-1996 Chevrolet Impala, 1996 Cadillac Commercial Chassis, and 1996 Cadillac Fleetwood. For buyers searching by vehicle, this heater core fits 1994-1996 Buick Roadmaster, 1994-1996 Chevrolet Caprice, and 1994-1996 Chevrolet Impala applications with the listed dimensions and inlet size.

This part cross-references Four Seasons 90778 and TYC 96032 for the same application.

Common Repair Symptoms

• Weak or no heat from the vents
• Coolant odor inside the cabin
• Fogging or film on the windshield from heater core leakage
• Coolant loss traced to the HVAC system
• Uneven cabin temperature output

Installation Notes

Verify core height, width, thickness, and 5/8 in. inlet diameter against the original unit before installation. Confirm the heater hose routing and pipe orientation match the vehicle’s HVAC layout, since adjustable pipe positioning is not provided. Flush the cooling system and inspect hoses, clamps, and the thermostat housing before installing the replacement heater core.

Quality Assurance

Global Parts supplies this heater core as a replacement component for select GM vehicles, including Buick Roadmaster, Chevrolet Caprice, Chevrolet Impala, Cadillac Commercial Chassis, and Cadillac Fleetwood applications. The aluminum core construction and published dimensions provide the reference points needed for accurate parts matching.