OE Quality
60-Day Returns

Four Seasons 66919 A/C Refrigerant Liquid Hose
Reliable A/C Refrigerant Liquid Hose for Ford Edge and Lincoln MKX
The Four Seasons Hose Assembly 66919 is designed to maintain efficient air conditioning performance in select Ford and Lincoln vehicles. Engineered with durable aluminum and rubber materials, this liquid line hose assembly ensures proper refrigerant flow and system integrity for models like the Ford Edge and Lincoln MKX.
Key Features of Four Seasons Hose Assembly 66919
- Constructed from aluminum and rubber for durability and flexibility
- Equipped with P-nut fittings on both ends for secure connections
- Compatible with R134a refrigerant systems
- Includes gasket and fittings for a complete seal
- Features two O-rings (part number 24256) as sealing washers
- Designed as a liquid line hose assembly without a bracket or service port
- Incorporates an orifice tube for proper refrigerant metering
Detailed Description of the Four Seasons Hose Assembly
This Four Seasons Hose Assembly from the Hose Assembly product line is specifically engineered for the liquid refrigerant line in air conditioning systems. The combination of aluminum and rubber materials provides a balance of strength and flexibility, essential for withstanding pressure and temperature variations in HVAC systems. Both ends feature P-nut fittings, ensuring a reliable and leak-resistant connection to the vehicle's A/C components. The inclusion of two O-rings (24256 sealing washers) and gaskets helps maintain a tight seal, preventing refrigerant loss. This hose assembly is designed without a bracket or service port, focusing on the liquid line function with an integrated orifice tube to regulate refrigerant flow.
Applications and Common Issues Addressed
- Replacement of worn or damaged A/C refrigerant liquid hoses in Ford Edge and Lincoln MKX models
- Resolving refrigerant leaks caused by cracked or deteriorated hose materials
- Restoring proper refrigerant flow to improve air conditioning system efficiency
- Addressing issues related to faulty or missing sealing washers and fittings
- Ensuring compatibility with R134a refrigerant systems for optimal performance
Installation Notes and Tips
When installing the Four Seasons Hose Assembly 66919, ensure that both P-nut fittings are tightened to manufacturer specifications to prevent leaks. Verify that the included O-rings and gaskets are properly seated before final assembly. Since this hose assembly does not include a bracket, secure the hose according to vehicle-specific guidelines to avoid vibration or abrasion. This part is compatible with Ford Edge and Lincoln MKX models using R134a refrigerant systems.
Quality Assurance and Warranty
Four Seasons products are manufactured to meet or exceed OEM standards for HVAC components. The Hose Assembly 66919 undergoes rigorous quality control to ensure durability and performance. Warranty details are provided by Four Seasons and typically cover defects in material and workmanship under normal use conditions.
| Brand | Four Seasons |
| Part Number | 66919 |
| Position | Hose Assembly |
| Material | Aluminum / rubber |
| End 1 Type | P-nut fitting |
| End 2 Type | P-nut fitting |
| Refrigerant Type | R134a |
| Gasket Or Seal Included | Included |
| Fittings Included | Included |
| Bracket? | W/o bracket |
| Description | Hose assemblies |
| O-Ring A Number/Desc | 24256 / sealing washer |
| O-Ring A Quantity | 2 |
| Orifice Tube? | W/ orifice tube |
| Service Port Included | No |
| Style | Liquid line hose assembly w/o orifice tube |
| Switch Port Included | No |
| Type | Liquid line |
This part fits 7 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2018 | Ford | Edge | 3.5L | V6 | N/A | w/o Orifice Tube; Hose Assembly |
| 2018 | Lincoln | MKX | 3.7L | V6 | N/A | w/o Orifice Tube; Hose Assembly |
| 2017 | Ford | Edge | 3.5L | V6 | N/A | w/o Orifice Tube; Hose Assembly |
| 2017 | Lincoln | MKX | 3.7L | V6 | N/A | w/o Orifice Tube; Hose Assembly |
| 2016 | Ford | Edge | 3.5L | V6 | N/A | w/o Orifice Tube; Hose Assembly |
| 2016 | Lincoln | MKX | 3.7L | V6 | N/A | w/o Orifice Tube; Hose Assembly |
| 2015 | Ford | Edge | 3.5L | V6 | N/A | w/o Orifice Tube; 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.