Reach Cooling 18-12011 HVAC Heater Core - Rear

Heater Core for Rear HVAC Service

Reach Cooling heater core part number 18-12011 is built for direct replacement in rear HVAC applications. It is engineered to meet or exceed form, fit, and function requirements, with aluminum construction throughout for consistent heat transfer and durability.

Key Features

• Aluminum core and aluminum tank construction
• Compact dimensions: 4 1/8 in. length, 4 1/8 in. width, 13/16 in. thickness
• 9/16 in. inlet and 9/16 in. outlet connections
• Built to match original form, fit, and function
• Compatible with rear HVAC heater core service

Detailed Description

This Reach Cooling heater core, part number 18-12011, is a replacement component for the heating system in 2001-2003 Dodge Durango rear HVAC applications. The aluminum core and tank design supports efficient heat transfer while keeping the unit compact for the available case space. For buyers searching for a Dodge Durango heater core or a rear heater core replacement, this part provides the dimensions and connection sizes needed for a proper service match. The 18-12011 heater core is also cross-referenced to APDI 9010446 and Four Seasons 92275 for the same application.

Common Issues This Part May Address

• Loss of cabin heat from a leaking or restricted heater core
• Coolant odor inside the vehicle from heater core seepage
• Poor rear HVAC heat output
• Reduced coolant flow through the heating circuit

Installation Notes and Tips

Verify inlet and outlet diameter, overall dimensions, and rear-position fitment before installation. Confirm the HVAC case configuration on 2001-2003 Dodge Durango models to ensure the replacement matches the original heater core layout. Flush the cooling system and inspect hoses and seals during service to reduce repeat contamination.

Quality Assurance

Reach Cooling states that its heater cores are manufactured with advanced engineering methods and modern production technology to meet or exceed form, fit, and function expectations.