Four Seasons 1878R A/C Compressor Kit

Four Seasons 1878R PAC-Kit w/ Reman Compressor

Four Seasons 1878R is an A/C compressor kit for select 1980-1981 Buick Skylark and Chevrolet Citation models equipped with an R4 compressor. This PAC-Kit w/ Reman Compressor supports a focused repair path for vehicles needing compressor-related HVAC service.

Key Features

• Brand: Four Seasons
• Brand line: PAC-Kit w/ Reman Compressor
• Part number: 1878R
• Category: HVAC A/C clutch and compressor
• Application-specific fitment for R4 compressor systems
• Fits 1980-1981 Buick Skylark, N/A
• Fits 1980-1981 Chevrolet Citation, N/A

Product Details

The Four Seasons PAC-Kit line groups compressor service components for targeted A/C repair work. Part number 1878R is listed for 1980-1981 Buick Skylark and 1980-1981 Chevrolet Citation applications with an R4 compressor. Fitment notes identify related service references for the reman compressor, accumulator, orifice, flush, and oil, which helps narrow the correct HVAC repair path for these vehicles. This part number, 1878R, is a direct reference point when matching the correct compressor kit for Buick Skylark and Chevrolet Citation A/C service.

Common Issues This Part May Address

• Loss of A/C compressor function
• Noise or rough operation from the compressor assembly
• Reduced cooling performance in an R4-based HVAC system
• Compressor replacement during A/C system repair
• Service needs on 1980-1981 Buick Skylark or Chevrolet Citation A/C systems

Installation Notes and Tips

Verify the vehicle uses an R4 compressor before ordering. Match the year, make, and model exactly to the listed fitment for Buick Skylark and Chevrolet Citation. Inspect the full A/C system condition before installation, and confirm the correct related service parts and refrigerant oil specification for the application. Proper evacuation, flushing, and recharge procedures are important for compressor replacement work.

Quality Assurance

Four Seasons is a recognized aftermarket brand in HVAC service parts, and 1878R is cataloged for specific OE-style vehicle applications. Confirm all fitment details against the vehicle’s existing compressor configuration before installation.