OE Quality
60-Day Returns

Four Seasons 55856 A/C Refrigerant Discharge / Suction Hose Assembly
Reliable A/C Refrigerant Hose Assembly for Chevrolet, GMC, and Oldsmobile
The Four Seasons Hose Assembly part number 55856 is designed to provide dependable performance for your vehicle's HVAC system. Engineered for use with R134a refrigerant, this discharge and suction hose assembly is compatible with select Chevrolet, GMC, and Oldsmobile models, including the Bravada, S10, S10 Blazer, S15, S15 Jimmy, and Sonoma.
- Constructed from durable aluminum and rubber materials for long-lasting service
- Includes green O-rings ([24608], [24612], [24613]) for secure sealing
- Designed without a switch service port or bracket for direct replacement
- Features female o-ring fittings on both discharge and suction ends
- Compatible with R134a refrigerant systems
- OE replacement part ensuring proper fit and function
About the Four Seasons Hose Assembly Product Line
The Four Seasons Hose Assembly line focuses on providing high-quality HVAC hoses and pipes engineered to meet or exceed original equipment specifications. This product line emphasizes durability and precise fitment, making it suitable for professional repairs and maintenance. The 55856 hose assembly is part of this line, offering a reliable solution for refrigerant discharge and suction needs in specific GM vehicles.
Detailed Product Description
This A/C refrigerant discharge and suction hose assembly combines aluminum and rubber components to withstand the pressures and temperatures typical in automotive HVAC systems. It is designed for use with R134a refrigerant and includes all necessary green O-rings to ensure leak-free connections. The assembly does not include fittings, brackets, mufflers, or service ports, reflecting its role as a direct OE replacement. Both discharge and suction ends feature female UNF o-ring fittings, compatible with the original manifold setup found in the specified Chevrolet, GMC, and Oldsmobile models.
Common Applications and Issues Addressed
- Replacement of worn or leaking A/C refrigerant hoses in Chevrolet Bravada and GMC S10 Blazer
- Restoring proper refrigerant flow in Oldsmobile S15 and S15 Jimmy HVAC systems
- Resolving refrigerant leaks caused by damaged or cracked hose assemblies
- Maintaining system pressure and preventing contamination in Sonoma A/C units
- Upgrading aging hoses to ensure consistent air conditioning performance
Installation Notes and Tips
- Verify compatibility with your vehicle’s make, model, and year before installation
- Ensure all included O-rings are properly seated to prevent refrigerant leaks
- Use appropriate tools to avoid damaging the aluminum fittings during installation
- Do not reuse old O-rings; replace with the included green O-rings for best results
- Check for proper torque specifications on fittings to maintain system integrity
Quality Assurance and Warranty
Four Seasons part number 55856 is manufactured to meet original equipment standards, ensuring reliable fit and function. The hose assembly includes all necessary sealing components and is designed for durability under typical operating conditions. While specific warranty details may vary, Four Seasons products generally come with a limited warranty against defects in materials and workmanship, providing confidence in your purchase.
| Brand | Four Seasons |
| Part Number | 55856 |
| Position | Hose Assembly |
| Bracket? | w/o Bracket |
| Discharge End Style | UNF O-Ring |
| Discharge End Type | Female O-Ring |
| Fittings Included | Not Included |
| Friction Material Attachment | w/o Switch Port |
| Gasket Or Seal Included | Included |
| Manifold? | Yes |
| Material | Aluminum / Rubber |
| Muffler? | w/o Muffler |
| O-Ring A Number/Desc | [24608] / Green O-Ring |
| O-Ring B Number/Desc | [24612] / Green O-Ring |
| O-Ring C Number/Desc | [24613] / Green O-Ring |
| O-Rings Included? | Included |
| O.E. Replacement? | Yes |
| Refrigerant Type | R134a |
| Service Port? | w/o Service Port |
| Suction End Style | UNF O-Ring |
| Suction End Type | Female O-Ring |
| Switch Included? | Not Included |
| Type | Discharge & Suction Line |
This part fits 17 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1991 | Chevrolet | S10 | 4.3L | V6 | N/A | Hose Assembly |
| 1991 | Chevrolet | S10 Blazer | N/A | Hose Assembly | ||
| 1991 | GMC | S15 Jimmy | N/A | Hose Assembly | ||
| 1991 | GMC | Sonoma | 4.3L | V6 | N/A | Hose Assembly |
| 1991 | Oldsmobile | Bravada | N/A | Hose Assembly | ||
| 1990 | Chevrolet | S10 | 4.3L | V6 | N/A | Hose Assembly |
| 1990 | Chevrolet | S10 Blazer | N/A | Hose Assembly | ||
| 1990 | GMC | S15 | 4.3L | V6 | N/A | Hose Assembly |
| 1990 | GMC | S15 Jimmy | N/A | Hose Assembly | ||
| 1989 | Chevrolet | S10 | 4.3L | V6 | N/A | Hose Assembly |
| 1989 | Chevrolet | S10 Blazer | 4.3L | V6 | N/A | Hose Assembly |
| 1989 | GMC | S15 | 4.3L | V6 | N/A | Hose Assembly |
| 1989 | GMC | S15 Jimmy | 4.3L | V6 | N/A | Hose Assembly |
| 1988 | Chevrolet | S10 | 4.3L | V6 | N/A | Hose Assembly |
| 1988 | Chevrolet | S10 Blazer | 4.3L | V6 | N/A | Hose Assembly |
| 1988 | GMC | S15 | 4.3L | V6 | N/A | Hose Assembly |
| 1988 | GMC | S15 Jimmy | 4.3L | V6 | N/A | 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.