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Four Seasons 54863 A/C Evaporator Core - Front
Reliable Four Seasons Evaporator Core for Select GM and Saab Models
The Four Seasons Evaporator Core part number 54863 is designed to restore efficient air conditioning performance in your vehicle. Engineered with precision, this aluminum evaporator core is compatible with various Buick, Chevrolet, GMC, Isuzu, Oldsmobile, and Saab models, ensuring a proper fit and reliable operation.
- Core dimensions: 11.000 inches width, 10.125 inches height, 2.875 inches depth
- Plate & fin type construction for effective heat exchange
- Aluminum material for durability and corrosion resistance
- Block fitting inlet and outlet for secure connections
- Includes slimline washer O-rings ([24402] and [24404]) for leak prevention
Four Seasons Evaporator Core Product Line Overview
The Evaporator Core line by Four Seasons focuses on delivering components that meet or exceed OEM specifications for HVAC systems. This product line emphasizes precise fitment and reliable thermal performance, making it suitable for maintaining factory-level air conditioning efficiency in compatible vehicles. Part number 54863 is a representative component within this line, engineered to match the exact dimensions and fittings required by the specified vehicle models.
Detailed Product Description and Specifications
This A/C evaporator core features a plate and fin design constructed from aluminum, providing effective heat transfer and resistance to corrosion. The core measures 11 inches in width, 10.125 inches in height, and 2.875 inches in depth (73.025 mm core depth). Both the inlet and outlet utilize block fittings, ensuring a secure and leak-resistant connection within the HVAC system. The included slimline washer O-rings ([24402] and [24404]) help maintain a tight seal, reducing the risk of refrigerant leaks. This evaporator core is compatible with a range of vehicles including Buick Rainier, Chevrolet Trailblazer and SSR, GMC Envoy series, Isuzu Ascender, Oldsmobile Bravada, and Saab 9-7x models.
Common Applications and Issues Addressed
- Restores proper cooling performance in HVAC systems
- Replaces leaking or clogged evaporator cores
- Eliminates musty odors caused by mold buildup inside the core
- Resolves reduced airflow or inconsistent cabin temperature
- Prevents refrigerant leaks that compromise A/C efficiency
Installation Notes and Tips
Installation of the Four Seasons Evaporator Core 54863 requires disassembly of the vehicle’s HVAC housing. Ensure all refrigerant is properly recovered before removal. Verify the block fitting connections are clean and free of debris before installing the new core. Replace O-rings with the included slimline washers to maintain a secure seal. It is recommended to inspect the entire A/C system for leaks and proper refrigerant charge after installation.
Quality Assurance and Warranty Information
Four Seasons manufactures this evaporator core to meet stringent quality standards, using durable aluminum and precise manufacturing processes. The part number 54863 is backed by Four Seasons’ warranty coverage, which protects against defects in materials and workmanship under normal use. Refer to Four Seasons’ official warranty terms for specific coverage details.
| Brand | Four Seasons |
|---|---|
| Part Number | 54863 |
| Position | Evaporator Core, Front |
| Core Depth Fraction | 2-7/8 |
| Core Depth MM | 73.025 |
| Core Height Fraction | 10-1/8 |
| Core Height MM | 257.175 |
| Core Width Fraction | 11 |
| Core Width MM | 279.400 |
| Depth | 2.875 |
| Description | Evaporator Cores |
| Height | 10.125 |
| Inlet Fitting Type | Block Fitting |
| Material | Aluminum |
| O-Ring A Number/Desc | [24402] / Slimline Washer |
| O-Ring B Number/Desc | [24404] / Slimline Washer |
| Outlet Fitting Type | Block Fitting |
| Type | Plate & Fin |
| Width | 11.000 |
This part fits 45 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2009 | Chevrolet | Trailblazer | Front | Extended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core |
| 2009 | GMC | Envoy | Front | Extended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core |
| 2009 | Saab | 9-7x | Front | Extended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core |
| 2008 | Chevrolet | Trailblazer | Front | Extended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core |
| 2008 | GMC | Envoy | Front | Extended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core |
| 2008 | Isuzu | Ascender | Front | Extended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core |
| 2008 | Saab | 9-7x | Front | Extended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core |
| 2007 | Buick | Rainier | Front | Extended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core |
| 2007 | Chevrolet | Trailblazer | Front | Extended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core |
| 2007 | GMC | Envoy | Front | Extended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core |
| 2007 | Isuzu | Ascender | Front | Extended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core |
| 2007 | Saab | 9-7x | Front | Extended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core |
| 2006 | Buick | Rainier | Front | Extended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core |
| 2006 | Chevrolet | SSR | N/A | w/ P-nut Fitting; Evaporator replacement for this application may require considerable time, specialty tools, and training.; Evaporator Core |
| 2006 | Chevrolet | Trailblazer | Front | Extended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core |
| 2006 | Chevrolet | Trailblazer EXT | Front | Extended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core |
| 2006 | GMC | Envoy | Front | Extended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core |
| 2006 | GMC | Envoy XL | Front | Extended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core |
| 2006 | Isuzu | Ascender | Front | Extended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core |
| 2006 | Saab | 9-7x | Front | Extended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core |
| 2005 | Buick | Rainier | Front | Extended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core |
| 2005 | Chevrolet | SSR | N/A | w/ P-nut Fitting; Evaporator replacement for this application may require considerable time, specialty tools, and training.; Evaporator Core |
| 2005 | Chevrolet | Trailblazer | Front | Extended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core |
| 2005 | Chevrolet | Trailblazer EXT | Front | Extended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core |
| 2005 | GMC | Envoy | Front | Extended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core |
| 2005 | GMC | Envoy XL | Front | Extended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core |
| 2005 | GMC | Envoy XUV | Front | Extended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core |
| 2005 | Isuzu | Ascender | Front | Extended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core |
| 2005 | Saab | 9-7x | Front | Extended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core |
| 2004 | Buick | Rainier | Front | Extended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core |
| 2004 | Chevrolet | SSR | N/A | w/ P-nut Fitting; Evaporator replacement for this application may require considerable time, specialty tools, and training.; Evaporator Core |
| 2004 | Chevrolet | Trailblazer | Front | Extended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core |
| 2004 | Chevrolet | Trailblazer EXT | Front | Extended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core |
| 2004 | GMC | Envoy | Front | Extended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core |
| 2004 | GMC | Envoy XL | Front | Extended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core |
| 2004 | GMC | Envoy XUV | Front | Extended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core |
| 2004 | Isuzu | Ascender | Front | Extended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core |
| 2004 | Oldsmobile | Bravada | Front | Extended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core |
| 2003 | Chevrolet | SSR | N/A | w/ P-nut Fitting; Evaporator replacement for this application may require considerable time, specialty tools, and training.; Evaporator Core |
| 2003 | Chevrolet | Trailblazer | Front | Extended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core |
| 2003 | Chevrolet | Trailblazer EXT | Front | Extended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core |
| 2003 | GMC | Envoy | Front | Extended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core |
| 2003 | GMC | Envoy XL | Front | Extended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core |
| 2003 | Isuzu | Ascender | Front | Extended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core |
| 2003 | Oldsmobile | Bravada | Front | Extended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core |
* 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.