Four Seasons 64176 A/C Evaporator Core - Rear

Rear A/C Evaporator Core for GM SUVs

The Four Seasons 64176 is a rear A/C evaporator core built for select Cadillac, Chevrolet, and GMC applications. It uses a parallel-flow design and includes O-rings, with male inlet and outlet fittings for a direct replacement-style service part.

Four Seasons Evaporator Core line parts are backed by more than 50 years of mobile A/C experience and are engineered and tested for dependable operation over time. This Four Seasons 64176 evaporator core is a fitment-specific solution for rear HVAC service on vehicles such as the Cadillac Escalade, Chevrolet Tahoe, and GMC Yukon.

Key Features

• Part number: 64176
• Rear A/C evaporator core application
• Parallel-flow core design
• Male inlet fitting and male outlet fitting
• O-rings included
• Core dimensions: 5-35/64 in. wide, 9-7/8 in. high, 1-3/4 in. deep
• Core size in metric: 140.891 mm wide, 250.825 mm high, 45 mm deep

Product Details

This evaporator core is part of Four Seasons’ Evaporator Core product line, a category focused on HVAC service components for mobile air conditioning systems. The parallel construction supports efficient heat transfer in rear climate control systems, while the listed dimensions and male fittings help match the original service layout on the vehicle.

Compatible With rear HVAC service on 2021-2024 Cadillac Escalade, 2021-2024 Cadillac Escalade ESV, 2021-2024 Chevrolet Tahoe, 2024 Chevrolet Traverse, 2024 GMC Acadia, 2021-2024 GMC Yukon, and 2021-2024 GMC Yukon XL. This part cross-references Monroe Shocks & Struts (e.g., 289229, 84689023) for the same application.

Common Issues This Part Can Address

• Rear cabin air not cooling properly
• Reduced airflow through the rear HVAC system
• Refrigerant leakage at the evaporator core assembly
• Corrosion or internal blockage in the rear evaporator
• Temperature inconsistency between front and rear climate zones

Installation Notes and Tips

Verify the rear HVAC configuration, fitting style, and core dimensions before installation. Replace the O-rings during service, inspect the surrounding HVAC housing and refrigerant lines for wear or contamination, and evacuate and recharge the system according to the vehicle service procedure after installation.

Quality Assurance

Four Seasons engineers and tests its mobile A/C components for long-term service life, drawing on more than 50 years of HVAC experience. The 64176 evaporator core is built to meet the demands of rear climate control repair on select Cadillac, Chevrolet, and GMC vehicles.