Four Seasons 54873 A/C Evaporator Core - Front

Overview of Four Seasons Evaporator Core 54873

The Four Seasons Evaporator Core 54873 is designed to restore efficient cooling performance in select GM vehicles. Engineered with precision, this aluminum evaporator core ensures reliable operation for Cadillac, Chevrolet, and GMC models including the Avalanche, Escalade, Sierra, Silverado, Suburban, Tahoe, and Yukon series.

• Core dimensions: 11.125" width x 10.125" height x 2.875" depth
• Constructed from durable aluminum material
• Plate & fin type design for effective heat exchange
• Block fitting inlet and outlet for secure connections
• Includes slimline washer O-rings (part numbers 24402 and 24404)

Detailed Product Description

This Four Seasons Evaporator Core 54873 features a plate and fin construction that maximizes surface area for optimal refrigerant cooling. The core measures 11-1/8 inches wide, 10-1/8 inches high, and 2-7/8 inches deep (approximately 282.6 mm x 254 mm x 73 mm), fitting precisely within the HVAC system of compatible vehicles. Both the inlet and outlet utilize block fitting types, ensuring a secure and leak-resistant connection. The aluminum build offers corrosion resistance and durability under typical operating conditions.

As part of the Four Seasons Evaporator Core product line, this component is engineered to meet OEM specifications for HVAC performance and fitment. The inclusion of slimline washer O-rings (one each of 24402 and 24404) helps maintain a tight seal, preventing refrigerant leaks and maintaining system integrity.

Compatible Vehicles and Applications

This evaporator core is compatible with a range of GM trucks and SUVs, including:

• Cadillac Escalade, Escalade ESV, Escalade EXT
• Chevrolet Avalanche 1500 and 2500, Cheyenne
• GMC Sierra 1500, 1500 Classic, 1500 HD, 1500 HD Classic, 2500, 2500 HD, 2500 HD Classic, 3500, 3500 Classic, 3500 HD
• Chevrolet Silverado 1500, 1500 Classic, 1500 HD, 1500 HD Classic, 2500, 2500 HD, 2500 HD Classic, 3500, 3500 Classic, 3500 HD
• Suburban 1500, Suburban 2500, Tahoe, Yukon, Yukon XL 1500, Yukon XL 2500

Common Issues Addressed by This Evaporator Core

• Reduced A/C cooling efficiency or no cold air output
• Refrigerant leaks within the evaporator core
• Unusual odors or mold buildup inside the HVAC system
• HVAC system freezing or inconsistent temperature control
• Corrosion or physical damage to the original evaporator core

Installation Notes and Tips

Installation of the Four Seasons Evaporator Core 54873 requires disassembly of the vehicle’s HVAC housing. It is recommended to have the system evacuated and recharged by a certified technician to ensure proper refrigerant handling. Verify that the block fitting inlet and outlet connections are clean and free of debris before installation. Replace O-rings with the included slimline washers to maintain a secure seal. Proper alignment and secure mounting are essential to prevent leaks and ensure optimal performance.

Quality Assurance and Warranty

Four Seasons manufactures this evaporator core to meet or exceed OEM standards for durability and performance. The aluminum construction and plate & fin design contribute to long service life under normal operating conditions. This part is backed by Four Seasons’ quality assurance protocols. Please refer to Four Seasons’ official warranty documentation for specific coverage details.