One Stop Solutions 98505 HVAC Heater Core

OE-Style Heater Core Replacement

Restore cabin heat with this HVAC heater core from One Stop Solutions. Part number 98505 is built as a direct replacement for vehicles with air conditioning systems and is shaped for drop-in fit, form, and function across a wide range of GM A-body applications.

Designed for Chevrolet Monte Carlo, Buick Regal, Chevrolet El Camino, Oldsmobile Cutlass, Pontiac Grand Prix, and related models, this heater core uses premium aluminum construction and includes the foam and accessories needed for the unit. It is a practical replacement for aging cores that have developed leaks, restricted flow, or heat output issues.

Key Features

• Drop-in fit, form, and function for OE-style replacement
• Premium grade aluminum construction for added durability
• Cadmium-plated tubes inside and out to help resist premature failure
• Individually pressure tested before shipment
• Includes necessary foam and accessories
• Built to address original design failures in high-mileage vehicles
• Part number 98505 for easy identification

Detailed Description

OSC Premium New Automotive Heater Cores are engineered to match original equipment dimensions and performance requirements. This heater core is a direct replacement for copper-designed units and uses aluminum construction to provide a modern service part for older HVAC systems. The design focuses on cycle, vibration, burst, and environmental testing to support consistent operation in demanding conditions. This part cross-references Dorman - HELP 94505 for the same application.

Fits 1978-1988 Chevrolet Monte Carlo, Compatible with vehicles with air conditioning systems. Fits 1978-1987 Buick Regal, Compatible with vehicles with air conditioning systems. Fits 1978-1987 Chevrolet El Camino, Compatible with vehicles with air conditioning systems. Fits 1985-1987 Oldsmobile Cutlass, Compatible with vehicles with air conditioning systems. Fits 1978-1981 Oldsmobile Cutlass, Compatible with vehicles with air conditioning systems. Fits 1985-1987 Oldsmobile Cutlass Salon, Compatible with vehicles with air conditioning systems. Fits 1978-1980 Oldsmobile Cutlass Salon, Compatible with vehicles with air conditioning systems. Fits 1978-1987 Oldsmobile Cutlass Supreme, Compatible with vehicles with air conditioning systems. Fits 1978-1987 Pontiac Grand Prix, Compatible with vehicles with air conditioning systems. Fits 1987 Pontiac T1000, Compatible with vehicles with air conditioning systems. Fits 1982-1986 Pontiac Bonneville, Compatible with vehicles with air conditioning systems. Fits 1978-1983 Chevrolet Malibu, Compatible with vehicles with air conditioning systems. Fits 1980-1983 Oldsmobile Cutlass Cruiser, Compatible with vehicles with air conditioning systems. Fits 1978-1983 Pontiac Grand LeMans, Compatible with vehicles with air conditioning systems. Fits 1978-1981 Buick Century, Compatible with vehicles with air conditioning systems. Fits 1978-1981 Oldsmobile Cutlass Calais, Compatible with vehicles with air conditioning systems. Fits 1978-1981 Pontiac LeMans, Compatible with vehicles with air conditioning systems. Fits 1978-1980 Pontiac Grand Am, Compatible with vehicles with air conditioning systems. Fits 1978-1979 Oldsmobile Custom Cruiser, Compatible with vehicles with air conditioning systems.

Common Problems This Part Can Address

• Loss of cabin heat from a leaking or restricted heater core
• Coolant odor or moisture inside the HVAC case
• Poor heater performance in high-mileage GM vehicles
• Failure caused by age, vibration, or thermal cycling
• Replacement of an original copper-style core with an aluminum unit

Installation Notes

Verify vehicle fitment by year, make, model, and HVAC configuration before installation. This heater core is listed for vehicles with air conditioning systems, and the OE-style shape supports direct replacement in the intended applications. Inspect the HVAC case, hoses, and coolant condition during service to help prevent repeat failures.

Quality Assurance

Each heater core is individually pressure tested, and the design is validated through cycle, vibration, burst, and environmental testing. Premium materials and cadmium-plated tubes are used to improve service life in older vehicles. Part number 98505 is built as a direct replacement for copper-designed heater cores in the listed applications.