Four Seasons 55612 A/C Refrigerant Suction Hose

Accumulator w/ Hose Assy for R134a Systems

Four Seasons 55612 is an A/C refrigerant suction hose assembly with accumulator for R134a systems. It is built with an aluminum body, female O-ring inlet, male insert O-ring outlet, and switch ports for applications that require a suction-side accumulator with hose routing.

Compatible With select Ford Thunderbird, Mercury Cougar, Lincoln Mark VII, and Lincoln Continental applications from 1986-1989, this Four Seasons accumulator line part number 55612 matches the OE-style layout used on vehicles with suction line accumulator service. It meets or exceeds OEM requirements and is listed for direct replacement use where the original configuration calls for a hose assembly with accumulator and switch ports.

Key Features

• Four Seasons Accumulator brand line, part number 55612
• R134a refrigerant type
• Accumulator w/ hose assembly for suction-side A/C routing
• Aluminum construction
• Female O-ring inlet and male insert O-ring outlet
• Switch port provision with 2 switch ports
• Meets or exceeds OEM specifications
• No manifold, muffler, service port, or mounting bracket included

Detailed Description

Four Seasons 55612 is an HVAC suction hose assembly designed for accumulator-equipped air conditioning systems. The accumulator body measures 8.000 inches long and 3.500 inches in diameter, with a 5/8-inch female O-ring inlet and a 5/8-inch male insert O-ring outlet. The assembly also includes switch-port provisions with a 0.250-inch port diameter, making it suitable for vehicles that use accumulator-mounted switch connections in the suction side circuit.

This part number 55612 is a fitment-based replacement for 1986-1989 Ford Thunderbird, Mercury Cougar, Lincoln Mark VII, and Lincoln Continental applications listed with accumulator or suction line w/ accumulator notes. It is a practical choice when replacing a leaking, damaged, or corroded suction hose assembly on an R134a-converted or R134a-service system.

This part cross-references Anchor 3616 for the same application.

Common Problems This Part Can Address

• Refrigerant loss from a cracked or leaking suction hose assembly
• Corrosion or fatigue at accumulator hose connections
• Improper sealing at female or male O-ring fittings
• Faulty switch-port connection points on the suction side
• Restoration of A/C suction line routing on accumulator-equipped vehicles

Installation Notes and Tips

• Verify the vehicle’s original accumulator and suction-line configuration before ordering.
• Replace O-rings and inspect mating surfaces during installation.
• Confirm the system uses R134a refrigerant and the listed inlet and outlet styles.
• Check switch-port alignment and sensor connection requirements before final assembly.
• Evacuate and recharge the A/C system according to factory service procedures after installation.

Quality Assurance

Four Seasons lists this accumulator hose assembly as meeting or exceeding OEM specifications, supporting OE-style fit and function for the listed applications. The aluminum construction and application-specific port and fitting layout are intended to match the original system design on compatible Ford, Mercury, and Lincoln vehicles.