OE Quality
60-Day Returns

Four Seasons 66007 A/C Refrigerant Discharge Hose
Reliable A/C Refrigerant Discharge Hose for Chevrolet and GMC Trucks
The Four Seasons Hose Assembly 66007 is designed specifically for heavy-duty Chevrolet and GMC trucks, including the Sierra 2500 HD, Sierra 3500 HD, Silverado 2500 HD, Silverado 3500, and Silverado 3500 HD models. This A/C refrigerant discharge hose ensures proper refrigerant flow and system efficiency for vehicles using R134a refrigerant.
- Compatible with Chevrolet and GMC heavy-duty trucks
- OEM replacement discharge line for A/C systems
- Includes gasket and fittings for secure installation
- Equipped with a switch service port (switch not included)
- Features a P-nut fitting on the 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 direct replacement hose assemblies for automotive HVAC systems. These assemblies are engineered to meet original equipment specifications, ensuring compatibility and reliable performance. The 66007 discharge hose is part of this line, offering a precise fit and necessary components such as gaskets and fittings to facilitate installation and maintain system integrity.
Product Details and Specifications
This A/C refrigerant discharge hose is designed for vehicles using R134a refrigerant and serves as the discharge line component within the HVAC system. The hose assembly includes essential fittings and a gasket to ensure a leak-free connection. It features a switch service port to accommodate system diagnostics, although the switch itself is not included. The suction end uses a P-nut fitting for secure attachment. This hose assembly does not come with a bracket or muffler, and it is an OEM replacement part, ensuring it meets factory standards for fit and function.
Common Applications and Issues Addressed
- Replacement of worn or damaged A/C refrigerant discharge hoses
- Resolving refrigerant leaks in the discharge line
- Restoring proper refrigerant flow in Chevrolet and GMC heavy-duty trucks
- Addressing A/C system inefficiencies caused by faulty hose assemblies
- Maintaining system pressure and preventing contamination
Installation Notes and Tips
When installing the Four Seasons Hose Assembly 66007, ensure the gasket and fittings are properly seated to prevent leaks. The included switch service port allows for easy system diagnostics, but note that the switch is not included and must be sourced separately if needed. Since this assembly does not include a bracket or muffler, verify existing mounting points and hardware compatibility. Proper torque on fittings and connections is essential to maintain system integrity.
Quality Assurance and Warranty
Four Seasons products are manufactured to meet or exceed OEM standards, providing reliable performance for HVAC system repairs. The Hose Assembly 66007 is an OEM replacement part, ensuring compatibility and durability. Warranty details are provided by Four Seasons and typically cover defects in materials and workmanship under normal use.
| Brand | Four Seasons |
| Part Number | 66007 |
| Position | Hose Assembly |
| Bracket? | w/o Bracket |
| Component Type | Discharge Line |
| Description | Hose Assemblies |
| Fittings Included | Included |
| Friction Material Attachment | w/ Switch Port |
| Gasket Or Seal Included | Included |
| Muffler? | w/o Muffler |
| O.E. Replacement? | Yes |
| Refrigerant Type | R134a |
| Service Port? | w/o Service Port |
| Suction End Type | P-Nut Fitting |
| Switch Included? | Not Included |
This part fits 23 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2014 | Chevrolet | Silverado 2500 HD | 6.0L | V8 | N/A | Compatible with various vehicles A/C refrigerant discharge hose; Hose Assembly | |
| 2014 | Chevrolet | Silverado 3500 HD | 6.0L | V8 | N/A | Compatible with various vehicles A/C refrigerant discharge hose; Hose Assembly | |
| 2014 | GMC | Sierra 2500 HD | 6.0L | V8 | N/A | Compatible with various vehicles A/C refrigerant discharge hose; Hose Assembly | |
| 2014 | GMC | Sierra 3500 HD | 6.0L | V8 | N/A | Compatible with various vehicles A/C refrigerant discharge hose; Hose Assembly | |
| 2013 | Chevrolet | Silverado 2500 HD | 6.0L | V8 | N/A | Compatible with various vehicles A/C refrigerant discharge hose; Hose Assembly | |
| 2013 | Chevrolet | Silverado 3500 | N/A | Compatible with various vehicles A/C refrigerant discharge hose; Hose Assembly | |||
| 2013 | Chevrolet | Silverado 3500 HD | 6.0L | V8 | N/A | Compatible with various vehicles A/C refrigerant discharge hose; Hose Assembly | |
| 2013 | GMC | Sierra 2500 HD | 6.0L | V8 | N/A | Compatible with various vehicles A/C refrigerant discharge hose; Hose Assembly | |
| 2013 | GMC | Sierra 3500 HD | 6.0L | V8 | N/A | Compatible with various vehicles A/C refrigerant discharge hose; Hose Assembly | |
| 2012 | Chevrolet | Silverado 2500 HD | 6.0L | V8 | N/A | Compatible with various vehicles A/C refrigerant discharge hose; Hose Assembly | |
| 2012 | Chevrolet | Silverado 3500 | N/A | Compatible with various vehicles A/C refrigerant discharge hose; Hose Assembly | |||
| 2012 | Chevrolet | Silverado 3500 HD | 6.0L | V8 | N/A | Compatible with various vehicles A/C refrigerant discharge hose; Hose Assembly | |
| 2012 | GMC | Sierra 2500 HD | 6.0L | V8 | N/A | Compatible with various vehicles A/C refrigerant discharge hose; Hose Assembly | |
| 2012 | GMC | Sierra 3500 HD | 6.0L | V8 | N/A | Compatible with various vehicles A/C refrigerant discharge hose; Hose Assembly | |
| 2011 | Chevrolet | Silverado 2500 HD | 6.0L | V8 | N/A | Compatible with various vehicles A/C refrigerant discharge hose; Hose Assembly | |
| 2011 | Chevrolet | Silverado 3500 | N/A | Compatible with various vehicles A/C refrigerant discharge hose; Hose Assembly | |||
| 2011 | Chevrolet | Silverado 3500 HD | 6.0L | V8 | N/A | Compatible with various vehicles A/C refrigerant discharge hose; Hose Assembly | |
| 2011 | GMC | Sierra 2500 HD | 6.0L | V8 | N/A | Compatible with various vehicles A/C refrigerant discharge hose; Hose Assembly | |
| 2011 | GMC | Sierra 3500 HD | 6.0L | V8 | N/A | Compatible with various vehicles A/C refrigerant discharge hose; Hose Assembly | |
| 2010 | Chevrolet | Silverado 2500 HD | 6.0L | V8 | FLEX | N/A | Discharge Line; Hose Assembly |
| 2010 | Chevrolet | Silverado 3500 HD | 6.0L | V8 | FLEX | N/A | Discharge Line; Hose Assembly |
| 2010 | GMC | Sierra 2500 HD | 6.0L | V8 | FLEX | N/A | Discharge Line; Hose Assembly |
| 2010 | GMC | Sierra 3500 HD | 6.0L | V8 | FLEX | 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.