Global Parts 4813478 A/C Refrigerant Suction Hose

Global Parts A/C Suction Hose for Silverado and Sierra HD

Global Parts 4813478 is an A/C refrigerant suction hose for the low-side circuit between the compressor and evaporator. It is built for direct replacement service on select Chevrolet Silverado HD and GMC Sierra HD applications, including heavy-duty trucks that rely on stable refrigerant flow for consistent cabin cooling.

Key Features

• Low-side A/C suction hose for compressor-to-evaporator routing
• Direct-fit replacement for select Chevrolet Silverado and GMC Sierra HD models
• Matches the application coverage for 2015-2019 heavy-duty trucks
• Cross-references Continental 66017 and UAC HA112694C for the same application
• Part number 4813478 for catalog and service identification

Application Details

This A/C refrigerant suction hose is used in the low-pressure side of the HVAC system, where refrigerant returns from the evaporator to the compressor. Compatible With 2015-2019 Chevrolet Silverado 2500 HD, N/A; 2015-2019 Chevrolet Silverado 3500 HD, N/A; 2015-2019 GMC Sierra 2500 HD, N/A; 2015-2019 GMC Sierra 3500 HD, N/A; and 2015-2018 Chevrolet Silverado 3500, N/A. Global Parts 4813478 supports service work on Silverado and Sierra HD platforms where the suction line must maintain proper refrigerant transfer and system routing.

Common Issues This Part May Address

• Low-side refrigerant leakage from a damaged hose assembly
• Loss of A/C performance caused by restricted refrigerant return flow
• Cracked, worn, or deteriorated hose material in the HVAC circuit
• Service replacement after compressor or evaporator line repair
• Fitment-related replacement needs on Silverado and Sierra HD trucks

Installation Notes and Tips

Verify the vehicle year, make, model, and HVAC line routing before installation. Inspect mating connections, seals, and adjacent A/C components for wear or contamination, and evacuate and recharge the system according to proper refrigerant service procedures after replacement. Confirm the hose path matches the original low-side routing on the vehicle.

Quality Assurance

Global Parts supplies replacement HVAC components for service applications, and this hose follows the manufacturer’s stated low-side function for compressor-to-evaporator use. Part number 4813478 is cataloged for direct identification alongside common cross-reference numbers used in the aftermarket.