Four Seasons 92018 HVAC Heater Core

Four Seasons 92018 Heater Core Overview

The Four Seasons 92018 heater core is an aluminum HVAC heater core built for direct replacement in select Chevrolet, Pontiac, and Saturn applications. It is engineered to meet or exceed OEM requirements and is sized for the factory heater box layout in vehicles such as the Chevrolet Cobalt, Chevrolet HHR, Pontiac G5, Pontiac G4, Pontiac Pursuit, and Saturn Ion.

Key Features

• Aluminum heater core construction for HVAC heat transfer
• Dimensions: 8-3/8 in. length, 6-3/8 in. width, and 1 in. thickness
• Core height: 8.375 in.; core width: 6.375 in.; core depth: 1 in.
• Tube sizes: 0.625 in. and 0.750 in. for application-specific fitment
• Meets or exceeds OEM specifications
• Four Seasons Heater Core line, Part Number 92018

Product Details

Four Seasons 92018 is an aluminum heater core designed for the HVAC system’s heat exchange function, helping transfer engine coolant heat into the cabin air stream. The compact core dimensions and fixed pipe positioning support factory-style replacement in vehicles that use this configuration. This part cross-references Dorman - HELP 91018 for the same application.

Compatible With 2006-2011 Chevrolet HHR, Heater Core; 2005-2010 Chevrolet Cobalt, Heater Core; 2007-2010 Pontiac G5, Heater Core; 2003-2007 Saturn Ion, Heater Core; 2005-2006 Pontiac G4, Heater Core; and 2005-2006 Pontiac Pursuit, Heater Core. The Four Seasons 92018 is a practical replacement choice when restoring cabin heat performance in these platforms.

Common Heater Core Issues This Part Can Address

• Weak or uneven cabin heat output
• Coolant odor inside the passenger compartment
• Fogging or film on the inside of the windshield caused by heater core leakage
• Visible coolant seepage from the HVAC housing area
• Restricted coolant flow through a damaged or clogged heater core

Installation Notes and Tips

Verify tube orientation, core dimensions, and hose connection sizes before installation. Because heater core replacement often requires access through the HVAC case, inspect related components such as heater hoses, clamps, and coolant condition during service. Proper system bleeding after installation helps restore normal heater performance and reduce air pockets in the cooling system.

Quality Assurance

This Four Seasons heater core is built to meet or exceed OEM specifications for the listed applications. Four Seasons 92018 is part of the Heater Core product line and is intended for direct-fit replacement where the original equipment uses this aluminum core configuration.