OE Quality
60-Day Returns

Four Seasons 66390 A/C Refrigerant Suction Hose
Overview of Four Seasons Hose Assembly 66390
The Four Seasons Hose Assembly 66390 is designed specifically for Ford F-150 models, providing a reliable A/C refrigerant suction hose solution. Constructed with durable aluminum and rubber materials, this hose assembly ensures efficient refrigerant flow and system performance.
- Compatible with Ford F-150 A/C systems using R134a refrigerant
- Constructed from aluminum and rubber for durability and flexibility
- Features P-nut fittings on both ends for secure connections
- Includes gasket, fittings, and O-rings for proper sealing
- Equipped with a muffler to reduce noise and vibration
- Designed as a low-pressure suction line with a 13 mm service port
- OE replacement part ensuring proper fit and function
Four Seasons Hose Assembly Product Line Details
The Hose Assembly product line by Four Seasons focuses on delivering complete hose solutions for HVAC systems in vehicles. This line includes assemblies that combine multiple components such as fittings, gaskets, and mufflers to provide a ready-to-install part. The 66390 hose assembly is part of this line, offering a comprehensive replacement that meets original equipment specifications for Ford F-150 models.
Detailed Product Description
This A/C refrigerant suction hose assembly is engineered to handle low-pressure refrigerant flow within the HVAC system of Ford F-150 trucks. The combination of aluminum and rubber materials provides both strength and flexibility, accommodating engine vibrations and thermal expansion. Both ends feature P-nut fittings, ensuring a secure and leak-free connection. The included gasket and multiple O-rings (tear drop sealing washer and black O-rings) enhance sealing integrity. Additionally, the integrated muffler helps minimize noise during operation. The hose assembly supports R134a refrigerant and includes a 13 mm service port on the low-pressure side for maintenance access.
Common Applications and Issues Addressed
- Replacement of worn or damaged A/C refrigerant suction hoses on Ford F-150
- Resolving refrigerant leaks caused by cracked or deteriorated hoses
- Eliminating A/C system noise through the integrated muffler
- Restoring proper refrigerant flow and pressure in the suction line
- Ensuring secure connections with included fittings and seals
Installation Notes and Tips
- Verify compatibility with your specific Ford F-150 model year before installation
- Ensure all O-rings and gaskets are properly seated to prevent leaks
- Use appropriate tools to tighten P-nut fittings without over-torquing
- Inspect the service port for accessibility during A/C system servicing
- Check for any signs of wear or damage on adjacent components during replacement
Quality Assurance and Warranty
The Four Seasons Hose Assembly 66390 is an OE replacement part designed to meet original equipment standards for fit and function. It includes all necessary seals and fittings to ensure a reliable installation. While specific warranty details are not provided here, Four Seasons products typically come with manufacturer-backed quality assurance to support durability and performance in automotive HVAC applications.
| Brand | Four Seasons |
|---|---|
| Part Number | 66390 |
| Position | Hose Assembly |
| Bracket? | w/o Bracket |
| Component Type | Suction Line |
| Description | Hose Assemblies |
| End 1 Type | P-Nut Fitting |
| End 2 Type | P-Nut Fitting |
| Fittings Included | Included |
| Friction Material Attachment | w/o Switch Port |
| Gasket Or Seal Included | Included |
| Material | Aluminum / Rubber |
| Muffler? | w/ Muffler |
| O-Ring A Number/Desc | [24243] / Tear Drop Sealing Washer |
| O-Ring B Number/Desc | [24150] / Black O-Ring |
| O.E. Replacement? | Yes |
| Refrigerant Type | R134a |
| Service Port Qty | 1 |
| Service Port Size | 13 mm |
| Service Port? | w/ Service Port |
| Suction End Type | P-Nut Fitting |
| Sve Port Low Side | Low Side |
| Switch Included? | Not Included |
| System Pressure | Low Pressure |
This part fits 3 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2017 | Ford | F-150 | 5.0L | V8 | N/A | Suction Line with R134a; Hose Assembly |
| 2016 | Ford | F-150 | 5.0L | V8 | N/A | Suction Line with R134a; Hose Assembly |
| 2015 | Ford | F-150 | 5.0L | V8 | N/A | Suction Line with R134a; 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.