Four Seasons 55831 A/C Refrigerant Suction Hose

OE A/C Suction Hose for Toyota Highlander

Four Seasons 55831 is an OE replacement A/C refrigerant suction hose assembly for low-pressure HVAC service. Built with aluminum and rubber construction, it is specified for R134-A systems and includes the service port and seals needed for the suction line connection.

Key Features

• Part number 55831 from Four Seasons Hose Assembly line
• A/C refrigerant suction hose assembly for low-pressure operation
• Aluminum / rubber construction for HVAC routing and flexibility
• Male O-ring end and capture O-ring end for OE-style connection points
• R134-A refrigerant type
• Service port included, 13 mm size, low-side location
• O-ring seal set included with green O-rings
• OE replacement design with fittings included
• Without switch port, bracket, or muffler

Product Details

Four Seasons 55831 is a suction line hose assembly used in the air conditioning system to carry low-pressure refrigerant vapor between HVAC components. This OE-style replacement is built for 2001-2003 Toyota Highlander applications and uses a P-nut suction end, male O-ring connection, and capture O-ring end for proper sealing at the factory-style attachment points. The Four Seasons Hose Assembly line focuses on direct-fit HVAC hose and pipe replacements, and 55831 follows that approach for service work on R134-A systems. This part cross-references UAC HA113502C for the same application.

Common Problems This Part Can Address

• Refrigerant loss from a cracked or leaking suction hose
• Weak A/C performance caused by a damaged low-side line
• Failed sealing at the hose-to-component connection points
• Corrosion or wear at the original aluminum/rubber hose assembly
• Service port damage on the low-side refrigerant line

Installation Notes and Tips

Verify the vehicle uses R134-A refrigerant and confirm the suction line routing before installation. Replace the included O-rings during service, lubricate seals with the correct refrigerant oil, and inspect mating surfaces for scoring or contamination. This part fits 2001-2003 Toyota Highlander, N/A, and the service port is on the low side with no switch port included.

Quality Assurance

Four Seasons 55831 is an OE replacement HVAC hose assembly built to match factory-style fitment and connection types for the listed Toyota Highlander applications.