Four Seasons 57081 A/C Compressor

Reman A/C Compressor for SD508 Applications

Four Seasons 57081 is a remanufactured A/C compressor for vehicles equipped with the SD508 compressor platform and dealer air systems. It uses R134a refrigerant and PAG 100 oil compatibility, with an ear-mount design, O-ring suction and discharge ports, and no clutch included.

This Four Seasons Reman Compressor line focuses on OE-style replacement coverage for older Jeep, Ford, and Mercury applications that use Sanden/Sankyo SD508 hardware. Part number 57081 is built for direct compressor replacement where the original unit is a non-clutch, ear-mount configuration.

Key Features

• Remanufactured A/C compressor for R134a systems
• Compatible with PAG 100 refrigerant oil
• SD508 compressor type with non-clutch pulley belt setup
• Ear mount design with O-ring suction and discharge ports
• No clutch included
• Does not include service fittings
• Includes green O-ring seals for the specified port connections

Product Details

Four Seasons 57081 is a reman A/C compressor intended for SD508-equipped vehicles that require a Sanden/Sankyo-style replacement. The compressor uses O-ring port connections and a non-clutch configuration, making it a direct match for applications listed with dealer air and reman compressor notes. If you are replacing a worn compressor on a Jeep Wrangler, Jeep Cherokee, Ford Escort, or Mercury Tracer, this part number provides the correct compressor format for those systems.

This part cross-references Dorman - HELP 57081 and Four Seasons 74007 for the same application.

What It Helps Fix

• No cold air from the A/C vents
• Compressor noise, seizure, or internal wear
• Refrigerant loss at the compressor ports
• Weak system pressure and poor cooling performance
• Failure of an original SD508 compressor assembly

Installation Notes

• Verify the vehicle uses an SD508 compressor with ear-mount brackets before ordering.
• Confirm R134a refrigerant and PAG 100 oil requirements for the system.
• Transfer or source any service fittings separately, since they are not included.
• Replace the specified O-rings during installation and evacuate the system before recharge.
• Check belt alignment and mounting points on Jeep, Ford, and Mercury applications before final assembly.

Quality Assurance

Four Seasons remanufactured compressors are rebuilt for replacement use in HVAC service applications and are cataloged by exact compressor type and fitment. For this part, the remanufactured construction, SD508 specification, and application-specific notes help support accurate replacement on 1981-1990 Jeep, Ford, and Mercury vehicles.

Vehicle Fitment

• Fits 1987-1990 Jeep Wrangler, N/A — w/ SD508 Compressor; Reman w/o Clutch; Dealer Air; Does Not Include Service Fittings; Reman Compressor
• Fits 1987-1989 Mercury Tracer, N/A — w/ SD508 Compressor; Reman w/o Clutch; Dealer Air; Does Not Include Service Fittings; Reman Compressor
• Fits 1987 Ford Escort, N/A — w/ SD508 Compressor; Reman w/o Clutch; Dealer Air; Does Not Include Service Fittings; Reman Compressor
• Fits 1985-1987 Ford Tempo, N/A — w/ SD508 Compressor; Reman w/o Clutch; Dealer Air; Does Not Include Service Fittings; Reman Compressor
• Fits 1986-1987 Jeep Cherokee, N/A — w/ SD508 Compressor; Reman w/o Clutch; Dealer Air; Does Not Include Service Fittings; Reman Compressor
• Fits 1986-1987 Jeep Comanche, N/A — w/ SD508 Compressor; Reman w/o Clutch; Dealer Air; Does Not Include Service Fittings; Reman Compressor
• Fits 1986-1987 Jeep Wagoneer, N/A — w/ SD508 Compressor; Reman w/o Clutch; Dealer Air; Does Not Include Service Fittings; Reman Compressor
• Fits 1986-1987 Mercury Lynx, N/A — w/ SD508 Compressor; Reman w/o Clutch; Dealer Air; Does Not Include Service Fittings; Reman Compressor
• Fits 1985-1987 Mercury Topaz, N/A — w/ SD508 Compressor; Reman w/o Clutch; Dealer Air; Does Not Include Service Fittings; Reman Compressor
• Fits 1986 Ford Escort, N/A — w/ SD508 Compressor; Reman w/o Clutch; Sanden; Does Not Include Service Fittings; Reman Compressor
• Fits 1984-1986 Jeep Grand Wagoneer, N/A — w/ SD508 Compressor; Reman w/o Clutch; Dealer Air; California Emissions; Does Not Include Service Fittings; Reman Compressor
• Fits 1981-1986 Jeep J10, N/A — w/ SD508 Compressor; Reman w/o Clutch; Dealer Air; California Emissions; Does Not Include Service Fittings; Reman Compressor
• Fits 1981-1983 Jeep Cherokee, N/A — w/ SD508 Compressor; Reman w/o Clutch; Dealer Air; California Emissions; Does Not Include Service Fittings; Reman Compressor
• Fits 1981-1983 Jeep Wagoneer, N/A — w/ SD508 Compressor; Reman w/o Clutch; Dealer Air; California Emissions; Does Not Include Service Fittings; Reman Compressor