Four Seasons 65840 A/C Refrigerant Suction Hose

Mercedes-Benz A/C Suction Hose Assembly

Four Seasons 65840 is an A/C refrigerant suction hose assembly built for select Mercedes-Benz applications using R1234YF refrigerant. It is engineered with aluminum and rubber construction for the suction line connection and includes the gasket or seal needed for service.

This hose assembly is a direct-fit replacement for 2015-2019 Mercedes-Benz C300 and 2017-2019 Mercedes-Benz E300 suction line service. Four Seasons 65840 is part of the Four Seasons Hose Assembly line, focused on replacement HVAC hose and pipe components for mobile air conditioning systems.

Key Features

• Part number: 65840
• A/C refrigerant suction hose assembly for HVAC service
• Aluminum / rubber construction
• Designed for R1234YF refrigerant systems
• Gasket or seal included
• No service port included
• No switch service port
• Without bracket and without muffler

Detailed Description

Four Seasons 65840 is a replacement suction hose assembly for Mercedes-Benz C300 and Mercedes-Benz E300 models listed in the fitment data. It is built for the refrigerant suction side of the air conditioning system, where proper hose routing and sealing are critical to maintaining system performance. The aluminum and rubber design supports the needs of modern HVAC plumbing while matching the specified R1234YF refrigerant application. If you are searching for a Mercedes-Benz C300 suction line hose assembly or a Mercedes-Benz E300 A/C refrigerant suction hose, this part number provides the listed application coverage.

Four Seasons backs this product line with more than 50 years of mobile A/C experience and states that its products are engineered and tested for long service life. This part cross-references UAC HA114413C for the same application.

Common Problems This Part Can Address

• Leaking suction hose connections in the A/C system
• Damaged or deteriorated refrigerant hose material
• Loss of refrigerant from the suction line
• Improper sealing at the hose assembly connection
• Service replacement for a worn Mercedes-Benz C300 or E300 suction line

Installation Notes and Tips

Verify refrigerant type before installation; this hose assembly is specified for R1234YF systems. Confirm the vehicle application by year and model before ordering, and inspect mating surfaces and adjacent A/C components for wear or contamination during service. Replace the included gasket or seal as part of the repair and evacuate and recharge the system according to factory procedures after installation.

Quality Assurance

Four Seasons states that its hose assemblies are engineered and tested for dependable operation, drawing on over 50 years of mobile A/C experience. Part number 65840 is built as a replacement HVAC hose assembly for the listed Mercedes-Benz applications.