Global Parts 4811257 A/C Refrigerant Liquid Hose

A/C Refrigerant Liquid Hose for Rear AC Systems

Global Parts 4811257 is an A/C refrigerant liquid hose built for high/low system pressure applications using R134a refrigerant. It is a direct-fit style replacement for select Ford Expedition and Lincoln Navigator models with rear air conditioning, including applications that connect to the evaporator.

This hose assembly includes a gasket or seal and uses a P-nut hose connection with female inlet and male outlet fittings. Global Parts 4811257 is a practical replacement for vehicles that need a refrigerant line service part matched to the original HVAC routing.

Key Features

• R134a refrigerant type
• High / low system pressure application
• Gasket or seal included
• P-nut hose connection type
• Female inlet fitting and male outlet fitting
• No mounting bracket, service port, or switch port included

Application Details

Global Parts 4811257 is used in HVAC refrigerant routing between major A/C components, where the liquid line carries refrigerant through the system. It cross-references Four Seasons 56921 for the same application. This part number is also referenced as 4811257 in replacement searches for Ford Expedition and Lincoln Navigator A/C hose service.

• Fits 2004-2005 Ford Expedition, N/A
• Fits 1997 Ford Expedition, N/A
• Fits 2003-2005 Lincoln Navigator, N/A
• Fits 1998-2002 Ford Expedition, N/A, w/ Rear AC; Connects to Evap
• Fits 1998-2002 Lincoln Navigator, N/A, w/ Rear AC; Connects to Evap
• Fits 2001 Ford Expedition, N/A, Rear AC compatible hose assembly

What This Part Helps Resolve

• Refrigerant line leakage at the hose assembly
• Cracked or deteriorated A/C hose material
• Loss of cooling performance in rear AC-equipped vehicles
• Improper refrigerant flow between HVAC components
• Failed hose connection at the compressor, condenser, or evaporator routing

Installation Notes

Verify the hose routing, fitting style, and rear AC configuration before installation. Replace the seal during service, evacuate and recharge the system with the correct R134a refrigerant, and inspect mating surfaces for wear or contamination. Confirm the vehicle uses the listed high/low pressure layout and the correct inlet and outlet orientation before final assembly.

Quality Assurance

Global Parts 4811257 is built as an HVAC replacement hose for specified Ford Expedition and Lincoln Navigator applications. The part is identified for R134a systems and includes the seal needed for service installation.