HomeHVAC > A/C Condenser and EvaporatorFour Seasons 54637 A/C Evaporator Core
Part #: 54637

Four Seasons 54637 A/C Evaporator Core

Evaporator Core
17 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Evaporator Core
Fitment: Saab, 900 and 9000
Easy Returns — Return within 60 days for a full refund
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Overview of Four Seasons Evaporator Core 54637

The Four Seasons Evaporator Core 54637 is designed specifically for Saab 900 and 9000 models, providing reliable HVAC performance. This A/C evaporator core ensures efficient cooling by effectively transferring heat within your vehicle's air conditioning system.

  • Compatible with Saab 900 and Saab 9000 models
  • Constructed from durable aluminum for corrosion resistance
  • Tube and fin design for optimal heat exchange
  • Includes green O-rings [24604], [24608], and [24610] for secure sealing
  • Core dimensions: 9" width, 12-1/8" height, and approximately 3-1/8" depth
  • Inlet fitting outside diameter: No. 8; outlet fitting outside diameter: No. 10

Detailed Product Description

The Four Seasons Evaporator Core 54637 belongs to the Evaporator Core product line, which focuses on delivering precise fit and reliable performance for vehicle HVAC systems. This part features a tube and fin construction made from aluminum, providing efficient heat transfer and durability. The core measures 9 inches in width, 12-1/8 inches in height, and has a depth of approximately 3-1/8 inches (79.375 mm). It includes three green O-rings ([24604], [24608], and [24610]) to ensure a tight seal and prevent refrigerant leaks. The inlet and outlet fittings have outside diameters of No. 8 and No. 10 respectively, matching OEM specifications for Saab 900 and 9000 models.

Common Applications and Issues Addressed

  • Restores proper cooling performance in Saab 900 and 9000 A/C systems
  • Replaces leaking or clogged evaporator cores
  • Eliminates musty odors caused by mold or debris buildup
  • Resolves insufficient cabin cooling due to evaporator failure
  • Prevents refrigerant leaks that reduce system efficiency

Installation Notes and Tips

  • Ensure compatibility with Saab 900 or 9000 model year before installation
  • Inspect and replace O-rings as needed to maintain proper sealing
  • Handle the aluminum core carefully to avoid damage to fins
  • Flush the HVAC system to remove debris before installing the new evaporator core
  • Follow vehicle manufacturer guidelines for refrigerant handling and system evacuation

Quality Assurance and Warranty

Four Seasons manufactures the Evaporator Core 54637 to meet or exceed OEM standards for fit and function. The aluminum construction and included O-rings contribute to long-lasting performance. While specific warranty details are not provided here, Four Seasons products typically come with a limited warranty against defects in materials and workmanship. Consult product documentation or contact the manufacturer for exact warranty terms.

BrandFour Seasons
Part Number54637
PositionEvaporator Core
Core Depth Fraction3-1/8
Core Depth MM79.375
Core Height Fraction12-1/8
Core Height MM307.975
Core Width Fraction9
Core Width MM228.600
Depth3.125
Depth3.250
DescriptionEvaporator Cores
Height11.000
Height12.125
Inlet Fitting Outside DiameterNo. 8
MaterialAluminum
O-Ring A Number/Desc[24604] / Green O-Ring
O-Ring B Number/Desc[24608] / Green O-Ring
O-Ring C Number/Desc[24610] / Green O-Ring
Outlet Fitting Outside DiameterNo. 10
TypeTube & Fin
Width9.000

This part fits 17 vehicles. Search below:

YearMakeModelSubmodelLitersCylindersPositionNotes
1994Saab900S2.1LL4N/AEvaporator Core
1994Saab900Turbo2.0LL4N/AEvaporator Core
1993Saab900N/AEvaporator Core
1993Saab9000N/AEvaporator Core
1992Saab900N/AEvaporator Core
1992Saab9000N/AEvaporator Core
1991Saab900N/AEvaporator Core
1990Saab900N/AEvaporator Core
1989Saab900N/AEvaporator Core
1988Saab900N/AEvaporator Core
1987Saab900N/AEvaporator Core
1986Saab900N/AEvaporator Core
1985Saab900N/AEvaporator Core
1984Saab900N/AEvaporator Core
1983Saab900N/AEvaporator Core
1982Saab900N/AEvaporator Core
1981Saab900N/AEvaporator 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:

01484460105900111546371493001562209191912412330142494332882973777115471145254637559006833777115808965889196609473729947989094800709480955A98297CWK777115ES19281EV5900EV5900ATCT54637YE433

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