Four Seasons 54690 A/C Evaporator Core - Front
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Four Seasons
 Evaporator Core

Four Seasons 54690 A/C Evaporator Core - Front

Brand Four Seasons 54690
Position Front
Core Depth Fraction 2-5/16
Core Depth MM 58.737
Core Height Fraction 10-7/8
Core Height MM 276.225
Core Width Fraction 11-5/8
Core Width MM 295.275
Depth 2.3125
Depth 2.375
Description Evaporator Cores
Height 10.875
Height 11.500
Inlet Fitting Outside Diameter No. 8
Inlet Fitting Type Block Fitting
Material Aluminum
O-Ring A Number/Desc [24661] / Green O-Ring
O-Ring B Number/Desc [24681] / Green O-Ring
Outlet Fitting Outside Diameter No. 10
Type Serpentine
Width 11.500
Width 11.625
Product line Evaporator Core
Fits Honda and Acura · 18 vehicles

Aluminum construction. Lightweight material helps support efficient heat transfer.

Serpentine design. Promotes smooth refrigerant flow through the evaporator core.

Block fittings. Uses No. 8 inlet and No. 10 outlet connections.

Cross-references BBB Industries 6944, Four Seasons 54690 and Global Parts Distributors LLC 4711773 for the same application. See all 22.

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Front A/C Evaporator Core for Honda and Acura

Four Seasons 54690 is an aluminum A/C evaporator core for front HVAC service on select Honda and Acura vehicles. It is built as a serpentine-style evaporator core with OE-style inlet and outlet fitting sizes for direct replacement service.

Key Features

  • Four Seasons Evaporator Core line
  • Part number 54690
  • Aluminum construction for HVAC service
  • Serpentine core design
  • Block fitting inlet with No. 8 outside diameter
  • No. 10 outside diameter outlet fitting
  • Core dimensions: 11-5/8 in. wide, 10-7/8 in. high, 2-5/16 in. deep
  • Fits front HVAC applications on select Honda Pilot, Acura MDX, and Honda Odyssey models

Product Details

Four Seasons 54690 is part of the Evaporator Core product line and is sized for front HVAC systems that require a serpentine aluminum core. The core measures 295.275 mm wide, 276.225 mm high, and 58.737 mm deep, with a block-style inlet fitting and matching outlet configuration. This part cross-references TYC 97139 for the same application. Use Four Seasons 54690 when replacing a front A/C evaporator core on 2001-2006 Acura MDX, 1999-2004 Honda Odyssey, or 2003-2008 Honda Pilot.

Vehicle Fitment

  • Fits 2003-2008 Honda Pilot, front
  • Fits 2001-2006 Acura MDX, front
  • Fits 1999-2004 Honda Odyssey, front

Common Reasons for Replacement

  • Weak or inconsistent cabin cooling
  • Refrigerant leakage at the evaporator core
  • Corrosion or internal blockage in the HVAC system
  • Reduced airflow performance through the A/C case
  • Odor or moisture issues tied to a failing evaporator assembly

Installation Notes

Verify the inlet and outlet fitting sizes, core dimensions, and front HVAC layout before installation. Proper system evacuation, leak checking, and refrigerant recharge are required after evaporator replacement. Inspect related seals and O-rings during service to confirm a secure HVAC seal.

Quality Assurance

Four Seasons supplies HVAC replacement components for service applications, and this evaporator core is built with aluminum construction and OE-style fitment details for the listed vehicles.

Related reading

This part fits 18 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2008HondaPilotFrontEvaporator Core
2007HondaPilotFrontEvaporator Core
2006AcuraMDXFrontEvaporator Core
2006HondaPilotFrontEvaporator Core
2005AcuraMDXFrontEvaporator Core
2005HondaPilotFrontEvaporator Core
2004AcuraMDXFrontEvaporator Core
2004HondaOdysseyFrontEvaporator Core
2004HondaPilotFrontEvaporator Core
2003AcuraMDXFrontEvaporator Core
2003HondaOdysseyFrontEvaporator Core
2003HondaPilotFrontEvaporator Core
2002AcuraMDXFrontEvaporator Core
2002HondaOdysseyFrontEvaporator Core
2001AcuraMDXFrontEvaporator Core
2001HondaOdysseyFrontEvaporator Core
2000HondaOdysseyFrontEvaporator Core
1999HondaOdysseyFrontEvaporator Core
Directly replaces or cross-references 22 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
BBB Industries — 6944Four Seasons — 54690Global Parts Distributors LLC — 4711773Spectra Premium — 1054690TYC — 97139UAC — EV939695PFC80210S0XA01236973288383773190805017014762761563595273348637731901115469019191271A88383CWK773190ES01300EV939695PFXCT54690