Four Seasons 54788 A/C Evaporator Core
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Four Seasons
 Evaporator Core

Four Seasons 54788 A/C Evaporator Core

Brand Four Seasons 54788
Core Depth Fraction 3-3/16
Core Depth MM 80.835
Core Height Fraction 8-7/8
Core Height MM 225.425
Core Width Fraction 9-1/4
Core Width MM 234.950
Depth 3.183
Depth 3.1875
Description Evaporator Cores
Height 8.875
Inlet Fitting Outside Diameter No. 8
Inlet Fitting Type Female O-Ring
Material Aluminum
O-Ring A Number/Desc [24608] / Green O-Ring
O-Ring B Number/Desc [24610] / Green O-Ring
Outlet Fitting Outside Diameter No. 10
Outlet Fitting Type Male Insert O-Ring
Type Serpentine
Width 9.250
Product line Evaporator Core
Fits Toyota · 6 vehicles

Aluminum construction. Helps resist corrosion while keeping the evaporator core lightweight.

Serpentine design. Promotes efficient refrigerant flow through the core.

Female O-ring inlet. Male insert O-ring outlet for secure, leak-resistant connections.

Cross-references AP Exhaust 54788, Global Parts Distributors LLC 4711531 and UAC EV3512AC for the same application. See all 30.

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Four Seasons 54788 Evaporator Core for Toyota T100

The Four Seasons Evaporator Core 54788 is an aluminum A/C evaporator core built for the HVAC system in select 1993-1998 Toyota T100 models. It uses a serpentine core design with OE-style inlet and outlet connections for a direct-fit replacement in the air conditioning evaporator housing.

Key Features

  • Brand: Four Seasons Evaporator Core
  • Part number: 54788
  • Aluminum construction for HVAC service applications
  • Serpentine core design
  • Core width: 9-1/4 in. (234.950 mm)
  • Core height: 8-7/8 in. (225.425 mm)
  • Core depth: 3-3/16 in. (80.835 mm)
  • Inlet fitting: No. 8 female O-ring
  • Outlet fitting: No. 10 male insert O-ring
  • Includes Green O-Ring references 24608 and 24610 for the listed fittings

Product Details

Four Seasons 54788 is part of the Evaporator Core line and is built around the dimensions and connection style needed for the Toyota T100 HVAC system. The aluminum serpentine core supports refrigerant flow through the evaporator assembly, while the No. 8 inlet and No. 10 outlet O-ring fittings help match the original service layout. This part cross-references UAC EV3512AC for the same application.

Fits 1993-1998 Toyota T100, N/A. Fits 1993-1998 Toyota T100, evaporator core application.

Common Repair Uses

  • Restoring cabin cooling performance when the evaporator core is leaking
  • Replacing a restricted or internally damaged A/C evaporator core
  • Addressing weak airflow caused by contamination inside the HVAC case
  • Repairing refrigerant loss at the evaporator connections
  • Servicing the Toyota T100 air conditioning system during HVAC overhaul

Installation Notes and Tips

Verify the core width, height, and depth against the original unit before installation. Confirm the inlet and outlet fitting types match the vehicle’s refrigerant line connections, and inspect the sealing surfaces in the HVAC case and lines before assembly. Proper evacuation and recharge procedures are required after evaporator replacement.

Quality Assurance

Four Seasons supplies HVAC components with application-specific dimensions and connection details for service replacement use. This evaporator core is specified for the listed Toyota T100 fitment and follows the part’s published OE-style configuration.

Related reading

This part fits 6 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
1998ToyotaT100N/AEvaporator Core
1997ToyotaT100N/AEvaporator Core
1996ToyotaT100N/AEvaporator Core
1995ToyotaT100N/AEvaporator Core
1994ToyotaT100N/AEvaporator Core
1993ToyotaT100N/AEvaporator Core
Directly replaces or cross-references 30 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
AP Exhaust — 54788Global Parts Distributors LLC — 4711531UAC — EV3512AC6814103512159845232076249629288225720019730045730221775107805057105478801494086156295027201633775107476005111154788191913328903296788501040208850134010A98225CWK775107ES18224T54788YE629