Four Seasons 66838 A/C Refrigerant Suction Hose

Four Seasons A/C Suction Hose for Mazda CX-5

The Four Seasons 66838 is an A/C refrigerant suction hose assembly built for Mazda CX-5 applications using R134A refrigerant. It combines aluminum and rubber construction with an included gasket or seal and a service port for a direct-fit replacement on the suction side of the HVAC system.

Four Seasons hose assemblies are part of the brand’s Hose Assembly line, focused on replacement A/C plumbing for mobile air conditioning systems. This part number is engineered and tested for dependable operation, drawing on more than 50 years of mobile A/C experience.

Key Features

• Part number 66838 A/C refrigerant suction hose assembly
• Fits Mazda CX-5 models from 2013-2021, depending on application
• Aluminum / rubber construction for HVAC hose routing
• For R134A refrigerant systems
• Gasket or seal included
• Service port included; switch service port not included
• Without muffler

Detailed Description

Four Seasons 66838 is an A/C suction hose assembly for Mazda CX-5 vehicles equipped with R134A refrigerant. It is listed for 2013-2016 Mazda CX-5 suction line applications, 2017 Mazda CX-5 w/ R134a hose assembly, 2018-2020 Mazda CX-5 suction line hose assembly, and 2021 Mazda CX-5 w/ R134a hose assembly. This part number is also referenced by Continental 66838 and UAC HA112463C for the same application.

The aluminum and rubber design supports the routing and sealing needs of the refrigerant suction side, while the included seal and service port help simplify replacement of a worn or leaking hose assembly. If you are replacing a Mazda CX-5 A/C suction line, Four Seasons 66838 provides a direct replacement option for the listed model years.

Common Problems This Part Can Address

• Refrigerant loss from a cracked or leaking suction hose
• Damaged hose fittings or deteriorated hose material
• Loss of A/C performance caused by suction-side leakage
• Service port wear or sealing issues at the hose assembly
• Improper refrigerant line routing after prior repair work

Installation Notes and Tips

Verify the vehicle’s refrigerant type before installation; this hose assembly is specified for R134A systems. Confirm the existing line routing, service port location, and suction-side configuration on the Mazda CX-5 before ordering. Replace any disturbed seals during installation and evacuate and recharge the system according to factory service procedures after the repair.

Quality Assurance

Four Seasons states that its products are engineered and tested for years of trouble-free operation. Backed by more than 50 years of mobile A/C experience, the brand positions this hose assembly as a repair-focused replacement for the listed Mazda CX-5 applications.