Four Seasons 65999 A/C Refrigerant Suction Hose - Rear

Rear A/C Suction Hose for Toyota Sequoia

Four Seasons 65999 is a rear A/C refrigerant suction hose assembly for the Toyota Sequoia. Built with aluminum and rubber construction, it is made for R134A and R1234YF systems and includes the required gasket or seal for service work.

Four Seasons hose assemblies are part of the brand’s Hose Assembly line, focused on replacement HVAC plumbing for mobile air conditioning systems. This part number, 65999, is engineered and tested for dependable operation in rear A/C service on the Toyota Sequoia.

• Aluminum / rubber hose assembly for rear A/C suction line service
• For R134A and R1234YF refrigerant systems
• Gasket or seal included
• No service port included
• No switch service port, bracket, or muffler

Detailed Product Overview

This Four Seasons 65999 A/C refrigerant suction hose is a direct replacement style hose assembly for rear HVAC routing on 2008-2022 Toyota Sequoia models. It is built to restore the suction-side refrigerant path in the rear air conditioning circuit, helping maintain proper system flow and sealing at the connection points. If you are searching for a rear Toyota Sequoia suction line hose assembly, Four Seasons 65999 is the exact part number to reference.

This part cross-references A66309 for the same application. The Four Seasons hose assembly line is designed for mobile A/C repair where correct fit, material selection, and refrigerant compatibility matter. Search terms such as 2008-2022 Toyota Sequoia rear A/C suction line, Toyota Sequoia rear hose assembly, and Four Seasons 65999 refrigerant suction hose all point to this application.

What It Helps Repair

• Rear A/C suction line leaks
• Damaged or deteriorated hose material
• Loss of refrigerant flow in the rear HVAC circuit
• Failed sealing at hose connection points
• Service replacement for a worn Toyota Sequoia rear suction hose

Installation Notes

Verify the vehicle is a 2008-2022 Toyota Sequoia with rear suction line routing before installation. Confirm refrigerant type and connection style match the existing system, and replace the included gasket or seal during service. Because this assembly does not include a service port, switch service port, bracket, or muffler, transfer only the components required by the vehicle configuration.

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. Part number 65999 is built to support reliable HVAC repair on Toyota Sequoia rear A/C systems.