Four Seasons 2791R A/C Compressor and Component Kit

Four Seasons 2791R PAC-Kit Overview

Four Seasons 2791R is an A/C compressor kit for vehicles equipped with the R4 compressor platform. This PAC-Kit w/ Reman Compressor is built for direct replacement service on select Buick, Chevrolet, Oldsmobile, and Pontiac applications from 1984-1990.

Use this kit when servicing a failing air conditioning compressor on a compatible Buick LeSabre, Chevrolet Caprice, or Pontiac Parisienne. The Four Seasons PAC-Kit line groups the compressor with related service components for a more complete HVAC repair path.

Key Features

• Part number: 2791R
• Four Seasons PAC-Kit w/ Reman Compressor
• For R4 compressor applications
• Compatible with select 1984-1990 Buick, Chevrolet, Oldsmobile, and Pontiac vehicles
• Application notes include compressor-specific pulley, switch, metric thread, and groove configurations where listed

Detailed Description

Four Seasons 2791R is an A/C compressor kit for R4-equipped GM vehicles. Fitment includes 1984-1990 Buick LeSabre, 1985 Buick Regal, 1984-1990 Chevrolet Caprice, 1985 Chevrolet Impala, 1984-1985 Oldsmobile 98, 1984-1985 Oldsmobile Custom Cruiser, 1984-1985 Oldsmobile Delta 88, 1985 Oldsmobile Delta 88, 1985 Pontiac Parisienne, and 1987-1989 Pontiac Safari. This part number is also referenced as 2791R for ordering and catalog lookup.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Loss of cabin cooling from a worn or failed A/C compressor
• Noisy compressor operation in R4-based HVAC systems
• Compressor seizure or poor refrigerant circulation
• Service replacement needs on older GM full-size car and wagon platforms
• Fitment matching for vehicles with listed pulley, switch, or thread configurations

Installation Notes and Tips

Verify the vehicle’s compressor style and the notes shown for your exact application before ordering. Confirm pulley diameter, switch style, metric thread details, and groove count where listed for Buick LeSabre, Chevrolet Caprice, and Pontiac Parisienne applications. Proper system flushing and correct oil selection are important when replacing an A/C compressor on an R4 system.

Quality Assurance

Four Seasons PAC-Kit products are cataloged for specific HVAC service applications and are identified by exact vehicle fitment data to support accurate parts selection.