OE Quality
60-Day Returns

Four Seasons 4200NK A/C Compressor and Component Kit - Front
Overview of Four Seasons Complete A/C Kit 4200NK
The Four Seasons Complete A/C Kit 4200NK is designed to restore the air conditioning system in Chevrolet, GMC, and Oldsmobile vehicles. This kit includes a new compressor and essential components to ensure efficient cooling performance for models like the Chevrolet Trailblazer and GMC Envoy.
- Includes new compressor (part 78561) and accumulator (part 83045)
- Compressor oil included for proper lubrication
- Standard white orifice tube with 0.072 inch diameter
- Receiver drier/accumulator with P-nut fittings and 3.5 inch diameter
- Compatible with R134a refrigerant systems
- Gaskets and seals included for leak prevention
- Limited lifetime warranty for quality assurance
Features and Components of the Complete A/C Kit
This Complete A/C Kit from Four Seasons includes a new compressor (part number 78561), an accumulator (83045), and a standard white orifice tube (38623) with a 0.072 inch diameter. The kit comes with compressor oil to ensure proper lubrication and smooth operation. The receiver drier/accumulator measures 3.5 inches in diameter and 8 inches in length, featuring P-nut inlet and outlet fittings sized at 0.75 inches (19.05 mm). Gaskets and seals are included to maintain system integrity and prevent refrigerant leaks. This kit is designed specifically for R134a refrigerant systems commonly found in Chevrolet Bravada, GMC Envoy XL, and Oldsmobile Trailblazer EXT models.
About the Four Seasons Complete A/C Kit Product Line
The Four Seasons Complete A/C Kit product line offers comprehensive solutions for automotive air conditioning repairs by providing all necessary components in one package. This approach simplifies the replacement process by including a new compressor along with critical parts such as the accumulator and orifice tube. The Complete A/C Kit line is engineered to meet OEM specifications and is tailored for specific vehicle applications, ensuring compatibility and reliable performance.
Applications and Common Issues Addressed
- Restores cooling efficiency in Chevrolet Trailblazer and GMC Envoy A/C systems
- Replaces worn or failing compressors causing inadequate cooling
- Eliminates refrigerant leaks with included gaskets and seals
- Prevents system contamination by replacing the accumulator and orifice tube
- Addresses compressor lubrication issues with included compressor oil
Installation Notes and Tips
- Ensure system is evacuated and properly flushed before installation
- Use the included compressor oil to lubricate the new compressor
- Verify correct orientation and secure P-nut fittings on the receiver drier/accumulator
- Replace the orifice tube with the included standard white tube to maintain proper refrigerant flow
- Check for leaks after installation and recharge the system with R134a refrigerant
Quality Assurance and Warranty
The Four Seasons Complete A/C Kit 4200NK is backed by a limited lifetime warranty, providing assurance of its durability and performance. Each component is manufactured to meet or exceed OEM standards, ensuring reliable operation in compatible Chevrolet, GMC, and Oldsmobile vehicles. This warranty covers defects in materials and workmanship under normal use conditions.
| Brand | Four Seasons |
|---|---|
| Part Number | 4200NK |
| Position | Complete A/C Kit, Front |
| Compressor Oil Included | Included |
| Compressor Oil Type | Oil |
| Expansion Device Type | Orifice Tubes |
| Gasket / Seals? | Included |
| Kit Includes | 78561 (New Compressor), 83045 (Accum), 38623 (Orifice), 59007 (Oil), O-Rings |
| Orifice Dia. IN | 0.072 |
| Orifice Tube Color | White |
| Orifice Tube Style | Standard |
| Receiver Drier/Accumulator Diameter IN | 3.500 |
| Receiver Drier/Accumulator Inlet Fitting Size IN | 0.750 |
| Receiver Drier/Accumulator Inlet Fitting Size MM | 19.050 |
| Receiver Drier/Accumulator Inlet Fitting Type | P-Nut Fitting |
| Receiver Drier/Accumulator Length IN | 8.000 |
| Receiver Drier/Accumulator Outlet Fitting Size IN | 0.750 |
| Receiver Drier/Accumulator Outlet Fitting Size MM | 19.050 |
| Receiver Drier/Accumulator Outlet Fitting Type | P-Nut Fitting |
| Refrigerant Type | R134a |
| Type | Complete Air Conditioning Kit w/ New Compressor |
| Warranty | Limited Lifetime |
This part fits 5 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2002 | Chevrolet | Trailblazer | Front | w/ TRSA12 Compressor; w/o Rear AC; Includes: 78561 (New Compressor), 83045 (Accum), 38623 (Orifice), 59007 (Oil), O-Rings; Complete A/C Kit |
| 2002 | Chevrolet | Trailblazer EXT | Front | w/ TRSA12 Compressor; w/o Rear AC; Includes: 78561 (New Compressor), 83045 (Accum), 38623 (Orifice), 59007 (Oil), O-Rings; Complete A/C Kit |
| 2002 | GMC | Envoy | Front | w/ TRSA12 Compressor; w/o Rear AC; Includes: 78561 (New Compressor), 83045 (Accum), 38623 (Orifice), 59007 (Oil), O-Rings; Complete A/C Kit |
| 2002 | GMC | Envoy XL | Front | w/ TRSA12 Compressor; w/o Rear AC; Includes: 78561 (New Compressor), 83045 (Accum), 38623 (Orifice), 59007 (Oil), O-Rings; Complete A/C Kit |
| 2002 | Oldsmobile | Bravada | N/A | w/ TRSA12 Compressor; Includes: 78561 (New Compressor), 83045 (Accum), 38623 (Orifice), 59007 (Oil), O-Rings; Complete A/C Kit |
* 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.