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Four Seasons 65390 A/C Suction and Liquid Line Hose Assembly
Overview of Four Seasons Hose Assembly 65390
The Four Seasons Hose Assembly 65390 is designed specifically for the Lexus LS500 HVAC system. This A/C suction and liquid line hose assembly ensures reliable refrigerant flow and system efficiency, compatible with R134a and R1234yf refrigerants.
- Constructed from durable aluminum and rubber materials
- Features a P-nut fitting on one end and a flange on the other
- Includes gasket and fittings for secure connections
- Designed without a bracket and muffler
- Includes a service port for maintenance access
- Style: Hose assembly with integrated heat exchanger (IHX)
Four Seasons Hose Assembly Product Line
The Four Seasons Hose Assembly product line focuses on delivering complete hose assemblies for HVAC systems, combining high-quality materials like aluminum and rubber to withstand pressure and temperature variations. This line is engineered to provide precise fitment and reliable performance, as demonstrated by part number 65390 for the Lexus LS500.
Detailed Product Description
This A/C suction and liquid line hose assembly (part number 65390) is built to meet the specific requirements of the Lexus LS500's HVAC system. The combination of aluminum and rubber materials offers durability and flexibility, while the P-nut fitting and flange end types ensure a secure and leak-free connection. The included gasket and fittings simplify installation and maintain system integrity. The hose assembly style with integrated heat exchanger (IHX) supports efficient refrigerant flow and heat transfer. Compatible with both R134a and R1234yf refrigerants, this hose assembly supports modern vehicle air conditioning systems.
Common Applications and Issues Addressed
- Replacement of worn or damaged A/C suction and liquid line hoses
- Resolving refrigerant leaks caused by cracked or corroded hoses
- Improving HVAC system efficiency by restoring proper refrigerant flow
- Addressing compatibility issues with R134a and R1234yf refrigerants
- Maintaining system pressure and preventing contamination with included gaskets and fittings
Installation Notes and Tips
When installing the Four Seasons Hose Assembly 65390 on a Lexus LS500, ensure all fittings and gaskets are properly seated to prevent leaks. The included service port allows for easy system servicing and refrigerant charging. Since this assembly does not include a bracket, verify existing mounting points for secure hose routing. Use appropriate tools to tighten the P-nut fitting and flange connections to manufacturer torque specifications.
Quality Assurance
Four Seasons products are manufactured to meet OEM standards for fit and function. The Hose Assembly 65390 undergoes rigorous quality control to ensure durability and performance in demanding automotive HVAC applications. Warranty information is available through Four Seasons, providing coverage against defects in materials and workmanship.
| Brand | Four Seasons |
| Part Number | 65390 |
| Position | Hose Assembly |
| Material | Aluminum / rubber |
| End 1 Type | P-nut fitting |
| End 2 Type | Flange |
| Refrigerant Type | R134a r1234yf |
| Gasket Or Seal Included | Included |
| Switch Service Port | No |
| Fittings Included | Included |
| Bracket? | W/o bracket |
| Description | Hose assemblies |
| Muffler? | No |
| Service Port Included | Yes |
| Style | Hose assembly w/ ihx |
| Type | Suction & liquid line |
This part fits 7 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2025 | Lexus | LS500 | 3.4L | V6 | GAS | N/A | Evaporator End; Hose Assembly |
| 2023 | Lexus | LS500 | 3.4L | V6 | GAS | N/A | Evaporator End; Hose Assembly |
| 2022 | Lexus | LS500 | 3.4L | V6 | GAS | N/A | Evaporator End; Hose Assembly |
| 2021 | Lexus | LS500 | 3.4L | V6 | GAS | N/A | Evaporator End; Hose Assembly |
| 2020 | Lexus | LS500 | 3.4L | V6 | GAS | N/A | Evaporator End; Hose Assembly |
| 2019 | Lexus | LS500 | 3.4L | V6 | GAS | N/A | Evaporator End; Hose Assembly |
| 2018 | Lexus | LS500 | 3.4L | V6 | GAS | N/A | Evaporator End; Hose Assembly |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.