Four Seasons 66591 A/C Refrigerant Discharge Hose

Reliable A/C Refrigerant Discharge Hose for Toyota Sienna

The Four Seasons Hose Assembly 66591 is designed specifically for Toyota Sienna models requiring a durable and efficient A/C refrigerant discharge hose. Engineered to handle high-pressure R134a refrigerant systems, this hose assembly ensures proper function and longevity in your vehicle's HVAC system.

• Constructed from aluminum and rubber materials for durability and flexibility
• Compatible with R134a refrigerant systems
• Includes gasket and fittings for secure installation
• Designed as a high-pressure discharge line without a service port or bracket
• Equipped with two green O-rings (part number 24682) for reliable sealing
• Features a P-nut fitting on the suction end for proper connection
• OE replacement part ensuring direct fit and function

About the Four Seasons Hose Assembly Product Line

The Four Seasons Hose Assembly line focuses on providing complete hose solutions for automotive HVAC systems. This product line includes assemblies designed to meet or exceed original equipment specifications, offering reliable performance and ease of installation. The 66591 hose assembly is part of this line, delivering a high-quality discharge hose tailored for Toyota Sienna vehicles.

Product Details and Specifications

This A/C refrigerant discharge hose is constructed with a combination of aluminum and rubber, providing the necessary strength and flexibility to withstand high system pressures typical in R134a refrigerant applications. The assembly includes all required fittings and gaskets, ensuring a secure and leak-free connection. It does not include a service port, bracket, muffler, or switch, which aligns with the original equipment design for the Toyota Sienna. The inclusion of two green O-rings (part number 24682) helps maintain a tight seal, preventing refrigerant leaks and maintaining system efficiency.

Common Applications and Issues Addressed

• Replacement of worn or damaged A/C refrigerant discharge hoses in Toyota Sienna vehicles
• Resolving refrigerant leaks caused by cracked or deteriorated hoses
• Restoring proper high-pressure refrigerant flow in the HVAC system
• Eliminating A/C system performance issues related to faulty discharge lines
• Ensuring compatibility with R134a refrigerant systems for optimal cooling

Installation Notes and Tips

When installing the Four Seasons Hose Assembly 66591, ensure the vehicle is compatible with R134a refrigerant systems and that the hose assembly matches the original equipment specifications. Use the included fittings and gaskets to secure connections and prevent leaks. The P-nut fitting on the suction end should be tightened to manufacturer torque specifications. Since this assembly does not include a service port or bracket, verify that the existing vehicle components accommodate this design. Proper installation will help maintain system pressure and performance.

Quality Assurance and Warranty

The Four Seasons Hose Assembly 66591 is an OE replacement part manufactured to meet stringent quality standards. It is designed to provide reliable service life and maintain the integrity of the Toyota Sienna HVAC system. This product includes all necessary seals and fittings to ensure a proper fit and function. Warranty information is provided by Four Seasons and typically covers defects in materials and workmanship under normal use conditions.