Four Seasons 1937N A/C Compressor and Component Kit

Four Seasons PAC-Kit w/ New Compressor

Four Seasons Part Number 1937N is an A/C compressor kit for select 1984-1985 GM full-size cars with R4 or LTR4 compressor applications. It is built for 1984 Chevrolet Caprice, 1984 Pontiac Parisienne, 1985 Pontiac Parisienne, and 1985 Oldsmobile Custom Cruiser fitments with the listed pulley and compressor configurations.

Key Features

• Four Seasons PAC-Kit w/ New Compressor line
• Part Number: 1937N
• Direct-fit A/C compressor kit for specified vehicle applications
• Application-specific fitment for R4 and LTR4 compressor setups
• Includes fitment notes for pulley diameter, groove style, accumulator, orifice, flush, and oil references

Fitment Details

Compatible With 1984 Chevrolet Caprice, N/A, w/ R4 Compressor; Compressor w/ 5.12" Dia. Pulley; Compressor w/ Single Groove Pulley. Compatible With 1984 Pontiac Parisienne, N/A, w/ R4 Compressor; Compressor w/ 5.12" Dia. Pulley; Compressor w/ Single Groove Pulley. Compatible With 1985 Pontiac Parisienne, N/A, w/ LTR4 Compressor; Compressor w/ 4.9" Dia. Pulley. Compatible With 1985 Oldsmobile Custom Cruiser, N/A, w/ R4 Compressor; Compressor w/ 5.12" Dia. Pulley; Compressor w/ Single Groove Pulley.

This part cross-references common A/C service applications for the same vehicle platform; verify compressor style and pulley configuration before ordering.

What It Helps Address

• Failed or noisy A/C compressor operation
• Loss of cabin cooling performance
• Compressor replacement on R4 or LTR4-equipped vehicles
• Service needs tied to pulley or compressor configuration mismatch
• Restoration work on 1984-1985 Chevrolet Caprice, Pontiac Parisienne, and Oldsmobile Custom Cruiser A/C systems

Installation Notes

Confirm the existing compressor type, pulley diameter, and groove count before installation. Match the vehicle’s listed notes exactly, including R4 or LTR4 configuration, to ensure proper fitment. Follow standard A/C service procedures for evacuation, flushing, oil handling, and component replacement when servicing the system.

Quality Assurance

Four Seasons PAC-Kit w/ New Compressor parts are cataloged for specific vehicle applications and configuration-based fitment. Part Number 1937N is listed for the exact GM models and compressor setups shown above.