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Four Seasons 54509 A/C Evaporator Core
Overview of Four Seasons Evaporator Core 54509
The Four Seasons Evaporator Core 54509 is designed specifically for select Buick and Oldsmobile models, including the 98, Delta 88, and LeSabre. This A/C evaporator core ensures efficient cooling performance by effectively managing refrigerant flow within the vehicle's HVAC system.
- Core dimensions: 10.000 inches width, 7.625 inches height, 2.75 inches depth
- Material: Durable aluminum construction for corrosion resistance
- Plate & fin design for optimized heat exchange
- Inlet and outlet fittings: Male insert o-ring type with No. 12 outlet fitting outside diameter
- Includes green o-rings [24608] and [24612], plus orifice tube [38623]
Four Seasons Evaporator Core Product Line Details
The Evaporator Core product line by Four Seasons focuses on delivering reliable HVAC components engineered to meet OEM specifications. The 54509 evaporator core features a plate and fin design that enhances heat transfer efficiency while maintaining durability. This product line is tailored to provide precise fitment and consistent performance for vehicles requiring replacement evaporator cores.
Detailed Product Description and Specifications
The Four Seasons 54509 evaporator core measures 10 inches in width, 7.625 inches in height, and 2.75 inches in depth, making it compatible with specific Buick and Oldsmobile models such as the 98, Delta 88, and LeSabre. Constructed from aluminum, this core offers resistance to corrosion and long service life. The plate and fin design improves refrigerant cooling efficiency by maximizing surface area for heat exchange. Both inlet and outlet fittings utilize male insert o-rings, ensuring a secure and leak-resistant connection. The outlet fitting has a No. 12 outside diameter, matching OEM specifications. Included with the core are green o-rings [24608] and [24612], as well as an orifice tube [38623], which are essential for proper sealing and system function.
Common Applications and Issues Addressed
- Replacement for faulty or leaking evaporator cores in Buick 98, Delta 88, and LeSabre models
- Resolves insufficient cabin cooling due to evaporator core failure
- Eliminates refrigerant leaks caused by corrosion or physical damage
- Addresses HVAC system odors linked to evaporator core contamination
- Restores proper refrigerant flow and pressure within the A/C system
Installation Notes and Tips
- Ensure compatibility with Buick and Oldsmobile models 98, Delta 88, and LeSabre before installation
- Inspect and replace all associated O-rings and seals to prevent leaks
- Handle the aluminum core carefully to avoid damage to fins and fittings
- Follow manufacturer HVAC system evacuation and recharge procedures after installation
- Verify inlet and outlet fitting types match vehicle specifications for proper connection
Quality Assurance and Warranty Information
Four Seasons manufactures the 54509 evaporator core to meet or exceed OEM standards, using corrosion-resistant aluminum and precise plate and fin construction. The product includes necessary sealing components to ensure reliable operation. While specific warranty details are not provided here, Four Seasons typically offers coverage against defects in materials and workmanship. Consult product documentation or manufacturer resources for exact warranty terms.
| Brand | Four Seasons |
| Part Number | 54509 |
| Position | Evaporator Core |
| Core Depth Fraction | 2-3/4 |
| Core Depth MM | 69.850 |
| Core Height Fraction | 7-5/8 |
| Core Height MM | 193.675 |
| Core Width Fraction | 10 |
| Core Width MM | 254.000 |
| Depth | 2.75 |
| Depth | 2.750 |
| Description | Evaporator Cores |
| Height | 7.625 |
| Height | 7.63 |
| Inlet Fitting Type | Male Insert O-Ring |
| Material | Aluminum |
| O-Ring A Number/Desc | [24608] / Green O-Ring |
| O-Ring B Number/Desc | [24612] / Green O-Ring |
| O-Ring C Number/Desc | [38623] / Orifice Tube |
| Outlet Fitting Outside Diameter | No. 12 |
| Outlet Fitting Type | Male Insert O-Ring |
| Type | Plate & Fin |
| Width | 10.000 |
This part fits 14 vehicles. Search below:
| Year | Make | Model | Body Type | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 1988 | Buick | LeSabre | Sedan | 3.8L | V6 | N/A | Evaporator Core |
| 1988 | Buick | LeSabre | Coupe | 3.8L | V6 | N/A | Evaporator Core |
| 1988 | Oldsmobile | 98 | N/A | Evaporator Core | |||
| 1988 | Oldsmobile | Delta 88 | N/A | Evaporator Core | |||
| 1987 | Buick | LeSabre | Sedan | 3.8L | V6 | N/A | Evaporator Core |
| 1987 | Buick | LeSabre | Coupe | 3.8L | V6 | N/A | Evaporator Core |
| 1987 | Oldsmobile | 98 | N/A | Evaporator Core | |||
| 1987 | Oldsmobile | Delta 88 | N/A | Evaporator Core | |||
| 1986 | Buick | LeSabre | Sedan | 3.8L | V6 | N/A | Evaporator Core |
| 1986 | Buick | LeSabre | Coupe | 3.8L | V6 | N/A | Evaporator Core |
| 1986 | Buick | LeSabre | Sedan | 3.0L | V6 | N/A | Evaporator Core |
| 1986 | Buick | LeSabre | Coupe | 3.0L | V6 | N/A | Evaporator Core |
| 1986 | Oldsmobile | 98 | N/A | Evaporator Core | |||
| 1986 | Oldsmobile | Delta 88 | N/A | 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.