Four Seasons 90569 HVAC Heater Core

Four Seasons 90569 Heater Core for Jeep

The Four Seasons 90569 heater core is an aluminum HVAC heater core built for Jeep applications that need reliable cabin heat and stable coolant-to-air transfer. It is sized for direct replacement use in select Jeep Grand Wagoneer, J10, J20, Comanche, Cherokee, and Wagoneer models.

Four Seasons backs this heater core with more than 50 years of mobile A/C experience and a product approach focused on long-term, trouble-free operation. This Four Seasons 90569 heater core is a practical choice for restoring heat output in older Jeep HVAC systems.

Key Features

• Aluminum heater core construction
• Core depth: 1.625 in.
• Core height: 9.625 in.
• Core width: 5.875 in.
• Tube sizes: 0.625 in. and 0.75 in.
• Designed for Jeep heater core replacement applications
• Part number: 90569

Detailed Description

Built as an aluminum heater core, this unit is sized for HVAC service in classic Jeep platforms where dependable cabin heat matters. The compact core dimensions and dual tube sizes support fitment in the specified Jeep Grand Wagoneer, J10, J20, Comanche, Cherokee, and Wagoneer applications. If you are searching for a Jeep Cherokee heater core, Jeep Wagoneer heater core, or Jeep J10/J20 heater core replacement, Four Seasons 90569 is the cataloged part number to reference.

Four Seasons 90569 also cross-references UAC HT2109C for the same application.

Vehicle Fitment

• Fits 1993 Jeep Grand Wagoneer, N/A; Aluminum Design; Heater Core
• Fits 1984-1991 Jeep Grand Wagoneer, N/A; Aluminum Design; Heater Core
• Fits 1974-1988 Jeep J10, N/A; Aluminum Design; Heater Core
• Fits 1974-1988 Jeep J20, N/A; Aluminum Design; Heater Core
• Fits 1986 Jeep Comanche, N/A; Aluminum Design; Heater Core
• Fits 1974-1983 Jeep Cherokee, N/A; Aluminum Design; Heater Core
• Fits 1978-1983 Jeep Wagoneer, N/A; Aluminum Design; Heater Core

Common Issues It Can Address

• Weak or inconsistent cabin heat
• Coolant odor inside the vehicle
• Moisture on the windshield from HVAC system leakage
• Heater core leakage in the dash area
• Reduced heater performance in aging Jeep HVAC systems

Installation Notes

Verify core dimensions, tube sizes, and vehicle fitment before installation. On Jeep Grand Wagoneer, Cherokee, Wagoneer, J10, J20, and Comanche applications, heater core replacement typically requires access through the HVAC case, so confirm the condition of seals, hoses, and surrounding components during service. Match the existing aluminum design and tube orientation to the removed part for proper installation.

Quality Assurance

Four Seasons engineers and tests its products for dependable operation, drawing on more than 50 years of mobile air conditioning experience. The 90569 heater core is built to support consistent performance in the specified Jeep applications.