OE Quality
60-Day Returns

Four Seasons 4854N A/C Compressor Kit
Reliable A/C Compressor Kit for Chevrolet and GMC Trucks
The Four Seasons PAC-Kit w/ New Compressor 4854N is designed to restore efficient air conditioning performance in select heavy-duty Chevrolet and GMC trucks. This A/C compressor kit is engineered to meet the specific requirements of Sierra 2500 HD, Sierra 3500, Silverado 2500 HD, and Silverado 3500 models.
- Complete A/C compressor kit including a new compressor
- Compatible with Chevrolet Sierra 2500 HD and 3500 models
- Compatible with GMC Sierra 2500 HD and 3500 models
- Also fits Chevrolet Silverado 2500 HD and 3500 trucks
- Part number 4854N for precise identification
About the Four Seasons PAC-Kit w/ New Compressor Line
The PAC-Kit w/ New Compressor product line from Four Seasons offers a comprehensive solution for HVAC system repairs by combining a new compressor with necessary components in one kit. This approach simplifies replacement procedures and ensures compatibility with specific vehicle models. The 4854N kit is tailored for heavy-duty Chevrolet and GMC trucks, providing a reliable option for restoring A/C system functionality.
Product Details and Compatibility
This A/C compressor kit is specifically designed for use in Chevrolet Sierra 2500 HD, Sierra 3500, Silverado 2500 HD, and Silverado 3500 trucks, as well as their GMC counterparts. The part number 4854N identifies this exact kit, ensuring you receive the correct compressor for your vehicle's HVAC system. The kit includes a new compressor engineered to meet OEM specifications, helping to maintain proper cooling performance and system reliability.
Common Applications and Issues Addressed
- Restores cooling efficiency in heavy-duty Chevrolet and GMC trucks
- Replaces worn or failing A/C compressors causing insufficient airflow
- Addresses compressor noise or clutch engagement problems
- Solves refrigerant leaks related to compressor failure
- Improves overall HVAC system performance in Sierra and Silverado 2500/3500 models
Installation Notes and Tips
When installing the Four Seasons PAC-Kit w/ New Compressor 4854N, ensure the vehicle is compatible by verifying make and model fitment. Proper evacuation and recharge of the A/C system are necessary to maintain system integrity. It is recommended to inspect related components such as the condenser, receiver/drier, and expansion valve during installation to prevent future issues.
Quality Assurance and Warranty
Four Seasons manufactures the PAC-Kit w/ New Compressor 4854N to meet industry standards for durability and performance. While specific warranty details are not provided here, Four Seasons typically offers coverage against defects in materials and workmanship. Refer to official documentation for exact warranty terms.
This part fits 16 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2004 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | N/A | w/ 10S17F Compressor; w/ 17mm Orifice Tube Dia.; w/o Ambulance Pkg.; w/ Grey Orifice Tube; Drier w/ P-nut fitting Clocked at 2:00; 78348 (New Compressor), 83211 (Accum), 38644 (Orifice), 69991 (Flush), 59007 (Oil); PAC-Kit w/ New Compressor |
| 2004 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | N/A | w/ 10S20F Compressor; w/ 17mm Orifice Tube Dia.; w/ Ambulance Pkg.; w/ Grey Orifice Tube; Drier w/ P-nut fitting Clocked at 2:00; 78348 (New Compressor), 83211 (Accum), 38644 (Orifice), 69991 (Flush), 59007 (Oil); PAC-Kit w/ New Compressor |
| 2004 | Chevrolet | Silverado 3500 | 6.6L | V8 | N/A | w/ 10S17F Compressor; w/ 17mm Orifice Tube Dia.; w/o Ambulance Pkg.; w/ Grey Orifice Tube; Drier w/ P-nut fitting Clocked at 2:00; 78348 (New Compressor), 83211 (Accum), 38644 (Orifice), 69991 (Flush), 59007 (Oil); PAC-Kit w/ New Compressor |
| 2004 | Chevrolet | Silverado 3500 | 6.6L | V8 | N/A | w/ 10S20F Compressor; w/ 17mm Orifice Tube Dia.; w/ Ambulance Pkg.; w/ Grey Orifice Tube; Drier w/ P-nut fitting Clocked at 2:00; 78348 (New Compressor), 83211 (Accum), 38644 (Orifice), 69991 (Flush), 59007 (Oil); PAC-Kit w/ New Compressor |
| 2004 | GMC | Sierra 2500 HD | 6.6L | V8 | N/A | w/ 10S17F Compressor; w/ 17mm Orifice Tube Dia.; w/o Ambulance Pkg.; w/ Grey Orifice Tube; Drier w/ P-nut fitting Clocked at 2:00; 78348 (New Compressor), 83211 (Accum), 38644 (Orifice), 69991 (Flush), 59007 (Oil); PAC-Kit w/ New Compressor |
| 2004 | GMC | Sierra 2500 HD | 6.6L | V8 | N/A | w/ 10S20F Compressor; w/ 17mm Orifice Tube Dia.; w/ Ambulance Pkg.; w/ Grey Orifice Tube; Drier w/ P-nut fitting Clocked at 2:00; 78348 (New Compressor), 83211 (Accum), 38644 (Orifice), 69991 (Flush), 59007 (Oil); PAC-Kit w/ New Compressor |
| 2004 | GMC | Sierra 3500 | 6.6L | V8 | N/A | w/ 10S17F Compressor; w/ 17mm Orifice Tube Dia.; w/o Ambulance Pkg.; w/ Grey Orifice Tube; Drier w/ P-nut fitting Clocked at 2:00; 78348 (New Compressor), 83211 (Accum), 38644 (Orifice), 69991 (Flush), 59007 (Oil); PAC-Kit w/ New Compressor |
| 2004 | GMC | Sierra 3500 | 6.6L | V8 | N/A | w/ 10S20F Compressor; w/ 17mm Orifice Tube Dia.; w/ Ambulance Pkg.; w/ Grey Orifice Tube; Drier w/ P-nut fitting Clocked at 2:00; 78348 (New Compressor), 83211 (Accum), 38644 (Orifice), 69991 (Flush), 59007 (Oil); PAC-Kit w/ New Compressor |
| 2003 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | N/A | w/ 10S17F Compressor; w/ 17mm Orifice Tube Dia.; w/o Ambulance Pkg.; w/ Grey Orifice Tube; 78348 (New Compressor), 83211 (Accum), 38644 (Orifice), 69991 (Flush), 59007 (Oil); PAC-Kit w/ New Compressor |
| 2003 | Chevrolet | Silverado 3500 | 6.6L | V8 | N/A | w/ 10S17F Compressor; w/ 17mm Orifice Tube Dia.; w/o Ambulance Pkg.; w/ Grey Orifice Tube; 78348 (New Compressor), 83211 (Accum), 38644 (Orifice), 69991 (Flush), 59007 (Oil); PAC-Kit w/ New Compressor |
| 2003 | GMC | Sierra 2500 HD | 6.6L | V8 | N/A | w/ 10S17F Compressor; w/ 17mm Orifice Tube Dia.; w/o Ambulance Pkg.; w/ Grey Orifice Tube; 78348 (New Compressor), 83211 (Accum), 38644 (Orifice), 69991 (Flush), 59007 (Oil); PAC-Kit w/ New Compressor |
| 2003 | GMC | Sierra 3500 | 6.6L | V8 | N/A | w/ 10S17F Compressor; w/ 17mm Orifice Tube Dia.; w/o Ambulance Pkg.; w/ Grey Orifice Tube; 78348 (New Compressor), 83211 (Accum), 38644 (Orifice), 69991 (Flush), 59007 (Oil); PAC-Kit w/ New Compressor |
| 2002 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | N/A | w/ 10S20F Compressor; w/ 17mm Orifice Tube Dia.; w/ Denso Compressor; w/ Grey Orifice Tube; 78348 (New Compressor), 83211 (Accum), 38644 (Orifice), 69991 (Flush), 59007 (Oil); PAC-Kit w/ New Compressor |
| 2002 | Chevrolet | Silverado 3500 | 6.6L | V8 | N/A | w/ 10S20F Compressor; w/ 17mm Orifice Tube Dia.; w/ Denso Compressor; w/ Grey Orifice Tube; 78348 (New Compressor), 83211 (Accum), 38644 (Orifice), 69991 (Flush), 59007 (Oil); PAC-Kit w/ New Compressor |
| 2002 | GMC | Sierra 2500 HD | 6.6L | V8 | N/A | w/ 10S20F Compressor; w/ 17mm Orifice Tube Dia.; w/ Denso Compressor; w/ Grey Orifice Tube; 78348 (New Compressor), 83211 (Accum), 38644 (Orifice), 69991 (Flush), 59007 (Oil); PAC-Kit w/ New Compressor |
| 2002 | GMC | Sierra 3500 | 6.6L | V8 | N/A | w/ 10S20F Compressor; w/ 17mm Orifice Tube Dia.; w/ Denso Compressor; w/ Grey Orifice Tube; 78348 (New Compressor), 83211 (Accum), 38644 (Orifice), 69991 (Flush), 59007 (Oil); PAC-Kit w/ New Compressor |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.