Four Seasons 3907R A/C Compressor and Component Kit - Front and Rear

Four Seasons 3907R PAC-Kit w/ Reman Compressor

Four Seasons 3907R is an A/C compressor kit for classic Cadillac HVAC service. This PAC-Kit with reman compressor is built for front and rear applications on select 1968-1972 Cadillac DeVille, Eldorado, and Fleetwood models with an A6 compressor and expansion valve system.

Key Features

• Part number 3907R from Four Seasons
• PAC-Kit w/ Reman Compressor for A/C compressor replacement service
• Fits vehicles with A6 compressor and single groove pulley configuration
• Application-specific coverage for front and rear HVAC systems
• Includes fitment for 1968-1972 Cadillac DeVille, Eldorado, and Fleetwood

Fitment Details

• Fits 1969-1972 Cadillac DeVille, front and rear, w/ A6 compressor; w/ expansion valve; compressor w/ single groove pulley.
• Fits 1969-1972 Cadillac Fleetwood, front and rear, w/ A6 compressor; w/ expansion valve; compressor w/ single groove pulley.
• Fits 1968 Cadillac DeVille, front and rear, from serial no. 114153; w/ A6 compressor; w/ expansion valve; compressor w/ single groove pulley.
• Fits 1968 Cadillac Eldorado, front and rear, w/ A6 compressor; w/ expansion valve; compressor w/ single groove pulley.
• Fits 1968 Cadillac Fleetwood, front and rear, from serial no. 114153; w/ A6 compressor; w/ expansion valve; compressor w/ single groove pulley.

What It Helps Address

• Loss of A/C compressor function in the original HVAC system
• Poor cooling performance caused by compressor wear
• Noisy or inefficient compressor operation
• Service replacement for aging Cadillac air conditioning components
• Restoration work on factory-style front and rear A/C systems

Installation Notes

Verify the vehicle uses an A6 compressor, expansion valve setup, and single groove pulley before ordering. Confirm the listed year, model, and serial-number note where applicable, especially for 1968 DeVille and Fleetwood applications. Follow standard A/C service procedures, including system evacuation, flushing, and correct oil handling during compressor replacement.

Quality Assurance

Four Seasons is a recognized aftermarket brand for HVAC service parts, and this 3907R kit is cataloged for specific Cadillac applications to support accurate parts selection.