OE Quality
60-Day Returns

Four Seasons 66746 A/C Refrigerant Discharge Hose
Overview of Four Seasons Hose Assembly 66746
The Four Seasons Hose Assembly 66746 is designed specifically for Mazda MX-5 and MX-5 Miata models, providing a reliable A/C refrigerant discharge hose solution. Constructed from durable aluminum and rubber materials, this hose assembly ensures efficient refrigerant flow and system integrity.
- Material: Aluminum and rubber construction for durability
- Refrigerant Type: Compatible with R134-a refrigerant
- Component Type: Discharge line for A/C systems
- Includes gasket and fittings for secure installation
- O-Rings included: Two green O-rings (part number 24661)
- OEM replacement part for direct fit
- Features P-nut fitting on suction end
- Does not include bracket, muffler, or service port
About the Four Seasons Hose Assembly Product Line
The Four Seasons Hose Assembly line focuses on providing high-quality hose assemblies tailored for HVAC systems in vehicles. This product line emphasizes compatibility and durability, offering components like the 66746 discharge hose that meet OEM specifications. The assemblies are designed to integrate seamlessly with existing A/C systems, ensuring proper refrigerant flow and system performance.
Detailed Product Description
This A/C refrigerant discharge hose from Four Seasons is engineered to replace the original equipment discharge line in Mazda MX-5 and MX-5 Miata vehicles. The combination of aluminum and rubber materials provides resistance to heat and pressure, essential for maintaining the integrity of the refrigerant circuit. The included gasket and fittings simplify installation, while the two green O-rings ensure a tight, leak-free seal. The hose assembly is designed without a service port, bracket, muffler, or switch, focusing on the core discharge function with a P-nut fitting on the suction end for secure connection.
Common Applications and Issues Addressed
- Replacement of worn or damaged A/C refrigerant discharge hoses
- Resolving refrigerant leaks caused by cracked or deteriorated hoses
- Restoring proper refrigerant flow in Mazda MX-5 and MX-5 Miata A/C systems
- Eliminating poor A/C performance due to compromised discharge lines
- Ensuring system integrity after component failure or maintenance
Installation Notes and Tips
When installing the Four Seasons Hose Assembly 66746, ensure the vehicle is compatible with the part by verifying the make and model (Mazda MX-5 or MX-5 Miata). Use the included gasket and fittings to secure the hose properly, and replace the O-rings with the provided green O-rings to prevent leaks. Since this assembly does not include a bracket or muffler, verify existing mounting points and hardware are intact. Avoid forcing connections to prevent damage to fittings or the hose.
Quality Assurance and Warranty
Four Seasons products are manufactured to meet or exceed OEM standards, ensuring reliable performance and fitment. The Hose Assembly 66746 is an OEM replacement part, providing confidence in compatibility and durability. Warranty details are provided by Four Seasons and typically cover defects in materials and workmanship under normal use conditions.
| Brand | Four Seasons |
| Part Number | 66746 |
| Position | Hose Assembly |
| Bracket? | w/o Bracket |
| Component Type | Discharge Line |
| Description | Hose Assemblies |
| Fittings Included | Included |
| Friction Material Attachment | w/o Switch Port |
| Gasket Or Seal Included | Included |
| Material | Aluminum / Rubber |
| Muffler? | w/o Muffler |
| O-Ring A Number/Desc | [24661] / Green O-Ring |
| O.E. Replacement? | Yes |
| Refrigerant Type | R134-A |
| Service Port? | w/o Service Port |
| Suction End Type | P-Nut Fitting |
| Switch Included? | Not Included |
This part fits 20 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2015 | Mazda | MX-5 | N/A | Compatible with various vehicles A/C refrigerant discharge hose; Hose Assembly |
| 2015 | Mazda | MX-5 Miata | N/A | Discharge Line; Hose Assembly |
| 2014 | Mazda | MX-5 | N/A | Compatible with various vehicles A/C refrigerant discharge hose; Hose Assembly |
| 2014 | Mazda | MX-5 Miata | N/A | Discharge Line; Hose Assembly |
| 2013 | Mazda | MX-5 | N/A | Compatible with various vehicles A/C refrigerant discharge hose; Hose Assembly |
| 2013 | Mazda | MX-5 Miata | N/A | Discharge Line; Hose Assembly |
| 2012 | Mazda | MX-5 | N/A | Compatible with various vehicles A/C refrigerant discharge hose; Hose Assembly |
| 2012 | Mazda | MX-5 Miata | N/A | Discharge Line; Hose Assembly |
| 2011 | Mazda | MX-5 | N/A | Compatible with various vehicles A/C refrigerant discharge hose; Hose Assembly |
| 2011 | Mazda | MX-5 Miata | N/A | Discharge Line; Hose Assembly |
| 2010 | Mazda | MX-5 | N/A | Compatible with various vehicles A/C refrigerant discharge hose; Hose Assembly |
| 2010 | Mazda | MX-5 Miata | N/A | Discharge Line; Hose Assembly |
| 2009 | Mazda | MX-5 | N/A | Compatible with various vehicles A/C refrigerant discharge hose; Hose Assembly |
| 2009 | Mazda | MX-5 Miata | N/A | Discharge Line; Hose Assembly |
| 2008 | Mazda | MX-5 | N/A | Compatible with various vehicles A/C refrigerant discharge hose; Hose Assembly |
| 2008 | Mazda | MX-5 Miata | N/A | Discharge Line; Hose Assembly |
| 2007 | Mazda | MX-5 | N/A | Compatible with various vehicles A/C refrigerant discharge hose; Hose Assembly |
| 2007 | Mazda | MX-5 Miata | N/A | Discharge Line; Hose Assembly |
| 2006 | Mazda | MX-5 | N/A | Compatible with various vehicles A/C refrigerant discharge hose; Hose Assembly |
| 2006 | Mazda | MX-5 Miata | N/A | Discharge Line; 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.