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Four Seasons 54890 A/C Evaporator CoreOE Quality 60-Day Returns
Part #: 54890

Four Seasons 54890 A/C Evaporator Core

Evaporator Core
34 vehicles fit this part
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Evaporator Core
Fitment: Chevrolet, Buick, and Pontiac, Impala Limited, Impala, Allure, LaCrosse, Grand Prix, Monte Carlo, Century, and Regal
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Overview of Four Seasons Evaporator Core 54890

The Four Seasons Evaporator Core 54890 is designed to restore efficient air conditioning performance in select Buick, Chevrolet, and Pontiac vehicles. This A/C evaporator core is engineered to meet OEM specifications, ensuring reliable cooling for models such as the Buick LaCrosse and Chevrolet Impala.

  • Compatible with Buick Allure, Century, LaCrosse, Regal
  • Fits Chevrolet Impala, Impala Limited, Monte Carlo
  • Also fits Pontiac Grand Prix
  • Part number 54890 for precise identification
  • Constructed from durable aluminum with plate & fin design
  • Includes slimline washer O-rings for inlet and outlet fittings
  • Core dimensions approximately 9.875" width by 11.125" height and 2.875" depth

Four Seasons Evaporator Core Product Line Details

The Four Seasons Evaporator Core product line focuses on delivering reliable HVAC components that meet or exceed original equipment standards. The Evaporator Core 54890 features a plate and fin construction that optimizes heat exchange efficiency and durability. This product line is engineered to provide consistent cooling performance and long service life in compatible vehicle models.

Detailed Product Description and Specifications

This A/C evaporator core is made from aluminum, offering corrosion resistance and lightweight durability. The core measures approximately 9-7/8 inches in width, 11-1/8 inches in height, and 2-7/8 inches in depth (250 mm x 282.575 mm x 73.025 mm). It includes block-type inlet and outlet fittings with a No. 8 outside diameter, designed for secure connections. The package contains two slimline washer O-rings (part numbers 24402 and 24403) to ensure a proper seal and prevent refrigerant leaks.

Common Applications and Issues Addressed

  • Restores cooling efficiency in Buick LaCrosse and Regal A/C systems
  • Replaces clogged or leaking evaporator cores in Chevrolet Impala and Monte Carlo
  • Solves issues related to reduced airflow or unpleasant odors in Pontiac Grand Prix HVAC
  • Addresses refrigerant leaks caused by corrosion or physical damage
  • Improves overall air conditioning system performance and reliability

Installation Notes and Tips

Installation of the Four Seasons Evaporator Core 54890 requires disassembly of the vehicle’s HVAC housing. It is recommended to verify fitment with the specific Buick, Chevrolet, or Pontiac model year before installation. Use the included slimline washer O-rings to ensure a leak-free seal on the inlet and outlet fittings. Proper evacuation and recharge of the A/C system with refrigerant should be performed after installation by a qualified technician.

Quality Assurance and Warranty

Four Seasons products are manufactured to meet industry standards for durability and performance. The Evaporator Core 54890 undergoes quality control inspections to ensure dimensional accuracy and material integrity. While specific warranty details are not provided here, Four Seasons typically offers limited warranties covering defects in materials and workmanship. Consult product documentation or manufacturer resources for exact warranty terms.

BrandFour Seasons
Part Number54890
PositionEvaporator Core
Core Depth Fraction2-7/8
Core Depth MM73.025
Core Height Fraction11-1/8
Core Height MM282.575
Core Width Fraction9-7/8
Core Width MM250.000
Depth2.875
Depth3.000
DescriptionEvaporator Cores
Height11.000
Height11.125
Inlet Fitting Outside DiameterNo. 8
Inlet Fitting TypeBlock Fitting
MaterialAluminum
O-Ring A Number/Desc[24402] / Slimline Washer
O-Ring B Number/Desc[24403] / Slimline Washer
Outlet Fitting TypeBlock Fitting
TypePlate & Fin
Width9.875

This part fits 34 vehicles. Search below:

YearMakeModelBody TypeLitersCylindersPositionNotes
2016ChevroletImpala LimitedN/AEvaporator Core
2015ChevroletImpala LimitedN/AEvaporator Core
2014ChevroletImpala LimitedN/AEvaporator Core
2013ChevroletImpalaN/AEvaporator Core
2012ChevroletImpalaN/AEvaporator Core
2011ChevroletImpalaN/AExtended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core
2010ChevroletImpalaN/AExtended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core
2009BuickAllureN/AEvaporator Core
2009BuickLaCrosseN/AExtended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core
2009ChevroletImpalaN/AExtended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core
2008BuickAllureN/AEvaporator Core
2008BuickLaCrosseN/AExtended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core
2008ChevroletImpalaN/AExtended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core
2008PontiacGrand PrixN/AExtended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core
2007BuickAllureN/AEvaporator Core
2007BuickLaCrosseN/AExtended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core
2007ChevroletImpalaN/AExtended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core
2007ChevroletMonte CarloN/AExtended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core
2007PontiacGrand PrixN/AExtended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core
2006BuickAllureN/AEvaporator Core
2006BuickLaCrosseN/AExtended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core
2006ChevroletImpalaN/AExtended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core
2006ChevroletMonte CarloN/AExtended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core
2006PontiacGrand PrixN/AExtended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core
2005BuickAllureN/AEvaporator Core
2005BuickCenturySedan3.1LV6N/Aw/ ATC (Automatic Temperature Control); Evaporator replacement for this application may require considerable time, specialty tools, and training.; Evaporator Core
2005BuickLaCrosseN/AExtended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core
2005ChevroletImpalaN/AExtended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core
2005ChevroletMonte CarloN/AExtended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core
2005PontiacGrand PrixN/AExtended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core
2004BuickRegalSedan3.8LV6N/Aw/ ATC (Automatic Temperature Control); Evaporator replacement for this application may require considerable time, specialty tools, and training.; Evaporator Core
2004ChevroletImpalaN/AExtended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core
2004ChevroletMonte CarloN/AExtended labor, specialized tools, and expertise may be necessary for replacement of this A/C Evaporator Core.; Evaporator Core
2004PontiacGrand PrixN/AExtended 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:

10100071030859811154890156296215633652733450288456377018747118695489059025070688877018789018288890189758901912797168A88456CWK770187EP10008EP20017EV939653PFCEV939653PFXCT54890

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

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