Four Seasons 54591 A/C Evaporator Core

Overview of Four Seasons Evaporator Core 54591

The Four Seasons Evaporator Core 54591 is designed specifically for select Buick and Oldsmobile models, including the Century, Cutlass Ciera, and Cutlass Cruiser. This A/C evaporator core ensures efficient cooling performance by effectively removing heat and moisture from the vehicle's cabin air.

• Compatible with Buick Century, Oldsmobile Cutlass Ciera, and Cutlass Cruiser
• Part Number: 54591
• Constructed from durable aluminum material
• Plate and fin core type for optimized heat exchange
• Core dimensions: approximately 13.625" width, 6.25" to 6.5625" height, and 3.5" to 3.625" depth
• Inlet and outlet fittings with male insert o-ring type (No. 8 inlet, No. 12 outlet)
• Includes green o-rings for secure sealing (two each of O-Ring A [24608] and O-Ring B [24612])

Four Seasons Evaporator Core Product Line Details

The Four Seasons Evaporator Core product line focuses on delivering reliable HVAC components engineered for precise fit and function. This line features plate and fin aluminum cores designed to provide consistent airflow and efficient heat transfer. The 54591 evaporator core maintains these standards, ensuring compatibility and performance for the specified Buick and Oldsmobile vehicles.

Product Specifications and Features

The evaporator core measures approximately 13.625 inches in width, with height ranging from 6.25 to 6.5625 inches and depth between 3.5 and 3.625 inches. Its plate and fin design enhances heat exchange efficiency, while the aluminum construction offers corrosion resistance and durability. The inlet and outlet fittings use male insert o-ring types, sized No. 8 for the inlet and No. 12 for the outlet, ensuring a secure connection within the HVAC system. Included green o-rings (part numbers 24608 and 24612) provide reliable sealing to prevent refrigerant leaks.

Common Applications and Problem Resolution

• Restores proper air conditioning cooling in Buick Century and Oldsmobile Cutlass models
• Replaces leaking or clogged evaporator cores causing reduced A/C performance
• Addresses issues with moisture buildup and unpleasant odors inside the vehicle cabin
• Solves inconsistent airflow or insufficient cooling from the HVAC system
• Prevents refrigerant leaks that can lead to system failure

Installation Notes and Tips

Installation of the Four Seasons Evaporator Core 54591 requires removal of the vehicle’s HVAC housing to access the evaporator. Ensure all refrigerant is properly recovered before beginning work. Verify the correct orientation of the core and fittings during installation. Replace all associated o-rings with the included green o-rings to maintain a leak-free seal. After installation, perform a system pressure test and recharge the A/C system according to manufacturer specifications.

Quality Assurance and Warranty

Four Seasons manufactures the 54591 evaporator core to meet or exceed OEM standards for fit, form, and function. The aluminum construction and plate and fin design contribute to long service life and reliable performance. This part is backed by Four Seasons’ quality assurance processes. Warranty details should be confirmed with the product documentation or supplier.