Four Seasons 54867 A/C Evaporator Core - Rear

Overview of Four Seasons Evaporator Core 54867

The Four Seasons Evaporator Core 54867 is designed to restore efficient air conditioning performance in select Buick, Chevrolet, GMC, Isuzu, and Oldsmobile vehicles. This A/C evaporator core is engineered to meet OEM specifications, ensuring reliable cooling for models such as the Trailblazer, Envoy, and Ascender.

• Core dimensions: 9.25 inches width, 6.625 inches height, and approximately 2.375 inches depth
• Constructed from durable aluminum material for effective heat exchange
• Serpentine type core design for optimized refrigerant flow
• Inlet fitting: Female o-ring with No. 8 outside diameter
• Outlet fitting: Flange type with No. 12 outside diameter
• Includes green O-rings [24608] and [24642] for secure sealing

Detailed Product Description

The Four Seasons Evaporator Core 54867 belongs to the Evaporator Core product line, which focuses on delivering precise fit and function for vehicle HVAC systems. This core features a serpentine design that enhances refrigerant circulation and heat absorption, contributing to consistent cabin cooling. Its aluminum construction provides corrosion resistance and durability under typical operating conditions. The core measures 9-1/4 inches wide, 6-5/8 inches high, and has a depth of approximately 2-3/8 inches (60.325 mm), dimensions that align with the original equipment for compatible vehicles.

Fittings include a female o-ring inlet with a No. 8 outside diameter and a flange outlet with a No. 12 outside diameter, ensuring proper connection to the vehicle’s HVAC system. The included green O-rings [24608] and [24642] help maintain a leak-free seal during installation.

Compatible Vehicles and Applications

This evaporator core is compatible with a range of GM and Isuzu models, including:

• Buick Rainier
• Chevrolet Trailblazer, Trailblazer EXT
• GMC Envoy, Envoy XL, Envoy XUV
• Isuzu Ascender, Bravada
• Oldsmobile models requiring this specific core size and fittings

Common Issues Addressed by This Evaporator Core

• Reduced or inconsistent air conditioning cooling
• Leaks or damage in the evaporator core causing refrigerant loss
• Unpleasant odors from mold or debris buildup inside the core
• HVAC system inefficiency due to clogged or corroded core
• Failure of original evaporator core leading to system shutdown

Installation Notes and Tips

Proper installation of the Four Seasons Evaporator Core 54867 requires careful handling to avoid damage to the aluminum fins and fittings. Ensure the green O-rings are correctly seated to prevent refrigerant leaks. It is recommended to replace the receiver/drier or accumulator and evacuate the system before recharging with refrigerant. Professional installation is advised to maintain system integrity and performance.

Quality Assurance and Warranty

Four Seasons manufactures the Evaporator Core 54867 to meet industry standards for durability and performance. The aluminum construction and precise fitment contribute to long service life. While specific warranty details are not provided here, Four Seasons typically offers coverage against defects in materials and workmanship. Consult product documentation or manufacturer resources for exact warranty terms.