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Four Seasons 54621 A/C Evaporator Core - RearOE Quality 60-Day Returns
Part #: 54621

Four Seasons 54621 A/C Evaporator Core - Rear

Evaporator Core, Rear
158 vehicles fit this part
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Evaporator Core, Rear
Fitment: Chevrolet and GMC, Express 2500, Express 3500, Express Cargo, Express Pasajeros, Savana 2500, Savana 3500, Express 1500, Savana 1500, and G30
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Overview of Four Seasons Evaporator Core 54621

The Four Seasons Evaporator Core 54621 is designed to restore efficient cooling performance in your vehicle's HVAC system. Engineered for select Chevrolet and GMC vans, this aluminum evaporator core ensures reliable operation and precise fitment.

Key Features of the Four Seasons Evaporator Core

  • Dimensions: 11.125 inches width, 8 inches height, and 2.875 inches depth for accurate fit
  • Constructed from durable aluminum with plate & fin design for effective heat exchange
  • Includes female o-ring inlet fitting (No. 8) and block fitting outlet for secure connections
  • Comes with green o-rings and slimline washers to ensure leak-free installation
  • Compatible with Chevrolet Express 1500, 2500, 3500 and GMC Savana 1500, 2500, 3500 vans

Detailed Description of the Evaporator Core 54621

This Four Seasons Evaporator Core 54621 features a plate and fin construction made from aluminum, providing efficient heat transfer and corrosion resistance. The core measures 11-1/8 inches wide, 8 inches high, and 2-7/8 inches deep (approximately 282.6 mm x 203.2 mm x 73 mm), matching OEM specifications for a direct replacement. The inlet fitting is a female o-ring type with an outside diameter of No. 8, while the outlet uses a block fitting, ensuring compatibility with the vehicle’s existing HVAC lines. Included green o-rings and slimline washers help maintain a secure, leak-free seal during installation.

About the Four Seasons Evaporator Core Product Line

The Four Seasons Evaporator Core product line focuses on delivering reliable HVAC components designed to meet or exceed original equipment standards. This line emphasizes precise fitment and durable materials, such as aluminum plate and fin cores, to maintain optimal air conditioning performance in a variety of vehicle applications. The 54621 part is a representative example, engineered specifically for Chevrolet and GMC full-size vans.

Common Issues Addressed by This Evaporator Core

  • Reduced or no air conditioning cooling output
  • Leaks or refrigerant loss in the evaporator core
  • Unusual odors or moisture buildup inside the HVAC system
  • HVAC system freezing or inconsistent temperature control
  • Corrosion or physical damage to the original evaporator core

Installation Notes and Tips

  • Ensure compatibility with Chevrolet Express and GMC Savana models before installation
  • Replace all associated o-rings and washers included with the part to prevent leaks
  • Handle the aluminum core carefully to avoid damage to fins and fittings
  • Follow vehicle manufacturer HVAC system service procedures for safe removal and installation
  • Check for proper sealing and refrigerant charge after installation

Quality Assurance and Warranty Information

Four Seasons manufactures the Evaporator Core 54621 to meet stringent quality standards, using corrosion-resistant aluminum and precision fittings. The part includes all necessary sealing components to ensure a reliable, leak-free installation. Warranty coverage details should be confirmed with the product documentation or supplier, as they may vary by region and application.

BrandFour Seasons
Part Number54621
PositionEvaporator Core, Rear
Core Depth Fraction2-7/8
Core Depth MM73.025
Core Height Fraction8
Core Height MM203.200
Core Width Fraction11-1/8
Core Width MM282.575
Depth2.875
DescriptionEvaporator Cores
Height8.000
Inlet Fitting Outside DiameterNo. 8
Inlet Fitting TypeFemale O-Ring
MaterialAluminum
O-Ring A Number/Desc[24608] / Green O-Ring
O-Ring B Number/Desc[24646] / Green O-Ring
O-Ring C Number/Desc[24403] / Slimline Washer
O-Ring D Number/Desc[24404] / Slimline Washer
Outlet Fitting TypeBlock Fitting
TypePlate & Fin
Width11.125

This part fits 158 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2024ChevroletExpress 2500RearEvaporator Core
2024ChevroletExpress 3500RearEvaporator Core
2024GMCSavana 2500RearEvaporator Core
2024GMCSavana 3500RearEvaporator Core
2023ChevroletExpress 2500RearEvaporator Core
2023ChevroletExpress 3500RearEvaporator Core
2023GMCSavana 2500RearEvaporator Core
2023GMCSavana 3500RearEvaporator Core
2022ChevroletExpress 2500RearEvaporator Core
2022ChevroletExpress 3500RearEvaporator Core
2022GMCSavana 2500RearEvaporator Core
2022GMCSavana 3500RearEvaporator Core
2021ChevroletExpress 2500RearEvaporator Core
2021ChevroletExpress 3500RearEvaporator Core
2021GMCSavana 2500RearEvaporator Core
2021GMCSavana 3500RearEvaporator Core
2020ChevroletExpress 2500RearEvaporator Core
2020ChevroletExpress 3500RearEvaporator Core
2020GMCSavana 2500RearEvaporator Core
2020GMCSavana 3500RearEvaporator Core
2019ChevroletExpress 2500RearEvaporator Core
2019ChevroletExpress 3500RearEvaporator Core
2019GMCSavana 2500RearEvaporator Core
2019GMCSavana 3500RearEvaporator Core
2018ChevroletExpress 2500RearEvaporator Core
2018ChevroletExpress 3500RearEvaporator Core
2018GMCSavana 2500RearEvaporator Core
2018GMCSavana 3500RearEvaporator Core
2017ChevroletExpress 2500RearEvaporator Core
2017ChevroletExpress 3500RearEvaporator Core
2017GMCSavana 2500RearEvaporator Core
2017GMCSavana 3500RearEvaporator Core
2016ChevroletExpress 2500RearEvaporator Core
2016ChevroletExpress 3500RearEvaporator Core
2016GMCSavana 2500RearEvaporator Core
2016GMCSavana 3500RearEvaporator Core
2015ChevroletExpress 25006.0LV8FLEXRearEvaporator Core
2015ChevroletExpress 25004.8LV8FLEXRearEvaporator Core
2015ChevroletExpress 25006.6LV8DIESELRearEvaporator Core
2015ChevroletExpress 35006.0LV8FLEXRearEvaporator Core
2015ChevroletExpress 35004.8LV8FLEXRearEvaporator Core
2015ChevroletExpress 35006.6LV8DIESELRearEvaporator Core
2015GMCSavana 25006.0LV8FLEXRearEvaporator Core
2015GMCSavana 25004.8LV8FLEXRearEvaporator Core
2015GMCSavana 25006.6LV8DIESELRearEvaporator Core
2015GMCSavana 35006.0LV8FLEXRearEvaporator Core
2015GMCSavana 35004.8LV8FLEXRearEvaporator Core
2015GMCSavana 35006.6LV8DIESELRearEvaporator Core
2014ChevroletExpress 1500RearEvaporator Core
2014ChevroletExpress 2500RearEvaporator Core
2014ChevroletExpress 3500RearEvaporator Core
2014GMCSavana 1500RearEvaporator Core
2014GMCSavana 2500RearEvaporator Core
2014GMCSavana 3500RearEvaporator Core
2013ChevroletExpress 1500RearEvaporator Core
2013ChevroletExpress 2500RearEvaporator Core
2013ChevroletExpress 3500RearEvaporator Core
2013GMCSavana 1500RearEvaporator Core
2013GMCSavana 2500RearEvaporator Core
2013GMCSavana 3500RearEvaporator Core
2012ChevroletExpress 1500RearEvaporator Core
2012ChevroletExpress 2500RearEvaporator Core
2012ChevroletExpress 3500RearEvaporator Core
2012GMCSavana 1500RearEvaporator Core
2012GMCSavana 2500RearEvaporator Core
2012GMCSavana 3500RearEvaporator Core
2011ChevroletExpress 1500RearEvaporator Core
2011ChevroletExpress 2500RearEvaporator Core
2011ChevroletExpress 3500RearEvaporator Core
2011GMCSavana 1500RearEvaporator Core
2011GMCSavana 2500RearEvaporator Core
2011GMCSavana 3500RearEvaporator Core
2010ChevroletExpress 1500RearEvaporator Core
2010ChevroletExpress 2500RearEvaporator Core
2010ChevroletExpress 3500RearEvaporator Core
2010GMCSavana 1500RearEvaporator Core
2010GMCSavana 2500RearEvaporator Core
2010GMCSavana 3500RearEvaporator Core
2009ChevroletExpress 1500RearEvaporator Core
2009ChevroletExpress 2500RearEvaporator Core
2009ChevroletExpress 3500RearEvaporator Core
2009GMCSavana 1500RearEvaporator Core
2009GMCSavana 2500RearEvaporator Core
2009GMCSavana 3500RearEvaporator Core
2008ChevroletExpress 1500RearEvaporator Core
2008ChevroletExpress 2500RearEvaporator Core
2008ChevroletExpress 3500RearEvaporator Core
2008GMCSavana 1500RearEvaporator Core
2008GMCSavana 2500RearEvaporator Core
2008GMCSavana 3500RearEvaporator Core
2007ChevroletExpress 1500RearEvaporator Core
2007ChevroletExpress 2500RearEvaporator Core
2007ChevroletExpress 3500RearEvaporator Core
2007GMCSavana 1500RearEvaporator Core
2007GMCSavana 2500RearEvaporator Core
2007GMCSavana 3500RearEvaporator Core
2006ChevroletExpress 1500RearEvaporator Core
2006ChevroletExpress 2500RearEvaporator Core
2006ChevroletExpress 3500RearEvaporator Core
2006GMCSavana 1500RearEvaporator Core
2006GMCSavana 2500RearEvaporator Core
2006GMCSavana 3500RearEvaporator Core
2005ChevroletExpress 1500RearEvaporator Core
2005ChevroletExpress 2500RearEvaporator Core
2005ChevroletExpress 3500RearEvaporator Core
2005GMCSavana 1500RearEvaporator Core
2005GMCSavana 2500RearEvaporator Core
2005GMCSavana 3500RearEvaporator Core
2004ChevroletExpress 1500RearEvaporator Core
2004ChevroletExpress 2500RearEvaporator Core
2004ChevroletExpress 3500RearEvaporator Core
2004GMCSavana 1500RearEvaporator Core
2004GMCSavana 2500RearEvaporator Core
2004GMCSavana 3500RearEvaporator Core
2003ChevroletExpress 1500RearEvaporator Core
2003ChevroletExpress 2500RearEvaporator Core
2003ChevroletExpress 3500RearEvaporator Core
2003GMCSavana 1500RearEvaporator Core
2003GMCSavana 2500RearEvaporator Core
2003GMCSavana 3500RearEvaporator Core
2002ChevroletExpress 1500RearEvaporator Core
2002ChevroletExpress 2500RearEvaporator Core
2002ChevroletExpress 3500RearEvaporator Core
2002ChevroletG30RearEvaporator Core
2002GMCSavana 1500RearEvaporator Core
2002GMCSavana 2500RearEvaporator Core
2002GMCSavana 3500RearEvaporator Core
2001ChevroletExpress 1500RearEvaporator Core
2001ChevroletExpress 2500RearEvaporator Core
2001ChevroletExpress 3500RearEvaporator Core
2001ChevroletG30RearEvaporator Core
2001GMCSavana 1500RearEvaporator Core
2001GMCSavana 2500RearEvaporator Core
2001GMCSavana 3500RearEvaporator Core
2000ChevroletExpress 1500RearEvaporator Core
2000ChevroletExpress 2500RearEvaporator Core
2000ChevroletExpress 3500RearEvaporator Core
2000GMCSavana 1500RearEvaporator Core
2000GMCSavana 2500RearEvaporator Core
2000GMCSavana 3500RearEvaporator Core
1999ChevroletExpress 1500RearEvaporator Core
1999ChevroletExpress 2500RearEvaporator Core
1999ChevroletExpress 3500RearEvaporator Core
1999GMCSavana 1500RearEvaporator Core
1999GMCSavana 2500RearEvaporator Core
1999GMCSavana 3500RearEvaporator Core
1998ChevroletExpress 1500RearEvaporator Core
1998ChevroletExpress 2500RearEvaporator Core
1998ChevroletExpress 3500RearEvaporator Core
1998GMCSavana 1500RearEvaporator Core
1998GMCSavana 2500RearEvaporator Core
1998GMCSavana 3500RearEvaporator Core
1997ChevroletExpress 1500RearEvaporator Core
1997ChevroletExpress 2500RearEvaporator Core
1997ChevroletExpress 3500RearEvaporator Core
1997GMCSavana 1500RearEvaporator Core
1997GMCSavana 2500RearEvaporator Core
1997GMCSavana 3500RearEvaporator 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:

014949301054621111546211563094156372515688315695715695927332922733338288379377013747114424711865524693415248184052481873546216583N706883720530770137890190078901934889079007A88379CWK770137EP20088EV6956PFCEV6956PFXCEV6957T54621

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

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