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Four Seasons 4202NK A/C Compressor and Component Kit - Front and Rear
| Brand | Four Seasons 4202NK |
|---|---|
| Position | Front and Rear |
| Compressor Oil Included | Included |
| Compressor Oil Type | Oil |
| Expansion Device Type | Orifice Tubes |
| Gasket / Seals? | Included |
| Kit Includes | 78561 (New Compressor), 83046 (Accum), 38887 (Orifice), 39011 (Exp Valve), 59007 (Oil), O-Rings |
| Orifice Dia. IN | .062 |
| Orifice Tube Color | Yellow / 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 | 9.000 |
| 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 |
| Product line | Complete A/C Kit |
| Fits | Chevrolet and GMC · 4 vehicles |
Complete A/C kit. Includes a new compressor plus key system components for a full refresh.
Oil included. Compressor oil and seals are included for a more complete install.
R134a compatible. Built for systems using R134a refrigerant.
Cross-references Four Seasons 4202NK and 520440 for the same application. See all 2.
Complete A/C Kit for Trailblazer, Envoy
Restore cabin cooling with the Four Seasons Complete A/C Kit 4202NK. This kit combines the major air conditioning components needed for a full service on select 2002 Chevrolet Trailblazer, Trailblazer EXT, GMC Envoy, and GMC Envoy XL models with TRSA12 compressor applications.
Built around a new compressor and matched service parts, this Four Seasons Complete A/C Kit 4202NK is organized for a complete R134a system repair on front and rear HVAC setups.
Key Features
- Complete Air Conditioning Kit with new compressor
- Includes compressor oil and O-rings
- Uses R134a refrigerant
- Expansion device type: orifice tubes
- Orifice tube style: standard, .062 in. diameter
- Receiver drier/accumulator with P-nut inlet and outlet fittings
- Limited lifetime warranty
- Cross-reference part number: 520440
Product Details
The Four Seasons Complete A/C Kit, part number 4202NK, is a matched HVAC service package for 2002 Chevrolet Trailblazer, 2002 Chevrolet Trailblazer EXT, 2002 GMC Envoy, and 2002 GMC Envoy XL models. It includes the new compressor, accumulator, orifice tube, expansion valve, compressor oil, and O-rings to support a full A/C system refresh. The kit is configured for vehicles using a TRSA12 compressor and is built for R134a refrigerant systems.
Four Seasons Complete A/C Kit line products are assembled to simplify major air conditioning repairs by grouping the core components needed for compressor replacement and related system service. Part number 4202NK is a direct-fit solution for the listed applications and is suited to front and rear HVAC configurations.
Common Problems This Kit Can Address
- Loss of cooling performance from a worn compressor
- Restricted refrigerant flow caused by a failing orifice tube
- System contamination after compressor failure
- Leaking seals or O-rings in the A/C circuit
- Accumulator-related moisture control issues in the refrigerant system
Installation Notes and Tips
Verify the vehicle uses a TRSA12 compressor before ordering. Replace the accumulator, orifice tube, expansion valve, and O-rings during service to help support proper system operation after compressor replacement. Confirm refrigerant type and component fitment before evacuation, recharge, and final testing.
Quality Assurance
Four Seasons backs this kit with a limited lifetime warranty. Part number 4202NK is built as a complete A/C service kit for the listed Chevrolet and GMC applications, with matched components for a more organized repair process.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2002 | Chevrolet | Trailblazer | Front and Rear | w/ TRSA12 Compressor; Includes: 78561 (New Compressor), 83046 (Accum), 38887 (Orifice), 39011 (Exp Valve), 59007 (Oil), O-Rings; Complete A/C Kit |
| 2002 | Chevrolet | Trailblazer EXT | Front and Rear | w/ TRSA12 Compressor; Includes: 78561 (New Compressor), 83046 (Accum), 38887 (Orifice), 39011 (Exp Valve), 59007 (Oil), O-Rings; Complete A/C Kit |
| 2002 | GMC | Envoy | Front and Rear | w/ TRSA12 Compressor; Includes: 78561 (New Compressor), 83046 (Accum), 38887 (Orifice), 39011 (Exp Valve), 59007 (Oil), O-Rings; Complete A/C Kit |
| 2002 | GMC | Envoy XL | Front and Rear | w/ TRSA12 Compressor; Includes: 78561 (New Compressor), 83046 (Accum), 38887 (Orifice), 39011 (Exp Valve), 59007 (Oil), O-Rings; Complete A/C Kit |
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