Four Seasons 66579 A/C Suction and Liquid Line Hose Assembly

OE A/C Hose Assembly for Ram Trucks

Four Seasons 66579 is an OE replacement A/C suction and liquid line hose assembly for select Ram 1500 and Ram 1500 Classic applications with R1234yf refrigerant. It is built as a hose assembly with IHX and includes the gasket or seal needed for the connection points.

Use this Four Seasons hose assembly when servicing the air conditioning lines on a Ram 1500 or Ram 1500 Classic and you need a direct-fit replacement for the original routing and connection style. Part number 66579 is listed for 2014-2018 Ram 1500 and 2019-2020 Ram 1500 Classic models.

Key Features

• Part number 66579
• OE replacement A/C suction and liquid line hose assembly
• Style: hose assembly with IHX
• Type: suction and liquid line
• Gasket or seal included
• Orifice tube not included
• Built for R1234yf-equipped applications

Product Details

Four Seasons Hose Assembly 66579 is a replacement HVAC hose assembly for the A/C suction and liquid line circuit. The integrated heat exchanger (IHX) design and OE-style construction support proper line routing and system service on compatible Ram trucks. This part cross-references UAC HA113827C for the same application.

Compatible With 2014-2018 Ram 1500, N/A, w/ R1234yf; Hose Assembly. Compatible With 2019-2020 Ram 1500 Classic, N/A, w/ R1234yf; Hose Assembly. The part number 66579 is also referenced under Continental 66579 and OE numbers 68232468AA, 68232468AB, 68232468AC, 68232468AD, and 68232468AE.

Common Repair Uses

• Replacing a leaking or damaged A/C suction and liquid line hose
• Restoring refrigerant line integrity after hose cracking or wear
• Addressing poor A/C performance caused by line leakage
• Servicing an OE-style HVAC line on Ram 1500 and Ram 1500 Classic trucks
• Replacing a failed hose assembly during R1234yf system repair

Installation Notes

Verify refrigerant type, line routing, and connection points before installation. Replace the included gasket or seal during service and confirm the system is evacuated, leak-checked, and recharged to the vehicle specification after installation. This part does not include an orifice tube.

Quality Assurance

Four Seasons supplies OE replacement HVAC components built for direct-fit service applications. Part 66579 is specified as an OE replacement hose assembly for the listed Ram truck fitments.