HomeHVAC > A/C Condenser and EvaporatorFour Seasons 54520 A/C Evaporator Core
Part #: 54520

Four Seasons 54520 A/C Evaporator Core

Evaporator Core
⚙️ 51 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Evaporator Core
🚗Fitment: GMC, Oldsmobile, and Chevrolet, Jimmy, Bravada, S10, S10 Blazer, Sonoma, Typhoon, S15 Jimmy, Syclone, and S15
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Overview of Four Seasons Evaporator Core 54520

The Four Seasons Evaporator Core 54520 is designed for reliable HVAC performance in select Chevrolet, GMC, and Oldsmobile vehicles. This A/C evaporator core is engineered to meet the specific cooling needs of models like the Chevrolet S10 Blazer and GMC Jimmy, ensuring efficient air conditioning operation.

  • Compatible with Chevrolet Bravada, Jimmy, S10, S10 Blazer, S15, S15 Jimmy, and Sonoma
  • Part Number: 54520
  • Core dimensions: 10.5" width x 6.75" height x 3.625" depth
  • Plate & fin type aluminum construction for effective heat exchange
  • Male insert o-ring inlet and outlet fittings with No. 12 outside diameter
  • Includes green o-rings [24608] and [24612], plus orifice tube [38642]

Four Seasons Evaporator Core Product Line Details

The Evaporator Core line by Four Seasons focuses on delivering precise fit and function for vehicle HVAC systems. This product line utilizes plate and fin aluminum cores to provide consistent cooling performance and durability. The 54520 evaporator core is part of this line, designed to integrate seamlessly with factory HVAC components in compatible Chevrolet, GMC, and Oldsmobile models.

Technical Specifications and Features

The Four Seasons 54520 evaporator core features a plate and fin design constructed from aluminum, which offers efficient heat transfer and corrosion resistance. The core measures 10.5 inches in width, 6.75 inches in height, and 3.625 inches in depth (92.075 mm core depth). Both inlet and outlet fittings are male insert o-ring types, sized with a No. 12 outside diameter, ensuring secure connections within the HVAC system. Included are green o-rings [24608] and [24612] for sealing, along with an orifice tube [38642] to regulate refrigerant flow.

Applications and Common Issues Addressed

  • Restores proper air conditioning cooling in Chevrolet S10 and GMC Jimmy models
  • Replaces leaking or clogged evaporator cores causing reduced A/C performance
  • Solves issues related to refrigerant leaks at inlet or outlet fittings
  • Addresses corrosion or damage in evaporator core fins affecting airflow
  • Improves HVAC system efficiency in Chevrolet Bravada and Oldsmobile vehicles

Installation Notes and Tips

Installation of the Four Seasons Evaporator Core 54520 requires careful handling to avoid damage to the aluminum fins. Ensure all old refrigerant is properly evacuated before removal. Replace all included o-rings to maintain a secure, leak-free seal. Verify compatibility with your specific vehicle model and HVAC system before installation. Professional installation is recommended to ensure proper fit and function.

Quality Assurance and Warranty

Four Seasons manufactures the 54520 evaporator core to meet OEM standards for durability and performance. The aluminum construction and included sealing components contribute to long service life. While specific warranty details are not provided here, Four Seasons products typically come with a limited warranty covering defects in materials and workmanship.

BrandFour Seasons
Part Number54520
PositionEvaporator Core
Core Depth Fraction3-5/8
Core Depth MM92.075
Core Height Fraction6-3/4
Core Height MM171.450
Core Width Fraction10-1/2
Core Width MM266.700
Depth3.625
DescriptionEvaporator Cores
Height6.750
Inlet Fitting TypeMale Insert O-Ring
MaterialAluminum
O-Ring A Number/Desc[24608] / Green O-Ring
O-Ring B Number/Desc[24612] / Green O-Ring
O-Ring C Number/Desc[38642] / Orifice Tube
Outlet Fitting Outside DiameterNo. 12
Outlet Fitting TypeMale Insert O-Ring
TypePlate & Fin
Width10.500

This part fits 51 vehicles. Search below:

YearMakeModelPositionNotes
1994GMCJimmyN/AEvaporator Core
1994OldsmobileBravadaN/AEvaporator Core
1993ChevroletS10N/AEvaporator Core
1993ChevroletS10 BlazerN/AEvaporator Core
1993GMCJimmyN/AEvaporator Core
1993GMCSonomaN/AEvaporator Core
1993OldsmobileBravadaN/AEvaporator Core
1992ChevroletS10N/AEvaporator Core
1992ChevroletS10 BlazerN/AEvaporator Core
1992GMCJimmyN/AEvaporator Core
1992GMCSonomaN/AEvaporator Core
1992OldsmobileBravadaN/AEvaporator Core
1991ChevroletS10N/AEvaporator Core
1991ChevroletS10 BlazerN/AEvaporator Core
1991GMCS15 JimmyN/AEvaporator Core
1991GMCSonomaN/AEvaporator Core
1991OldsmobileBravadaN/AEvaporator Core
1990ChevroletS10N/AEvaporator Core
1990ChevroletS10 BlazerN/AEvaporator Core
1990GMCS15N/AEvaporator Core
1990GMCS15 JimmyN/AEvaporator Core
1989ChevroletS10N/AEvaporator Core
1989ChevroletS10 BlazerN/AEvaporator Core
1989GMCS15N/AEvaporator Core
1989GMCS15 JimmyN/AEvaporator Core
1988ChevroletS10N/AEvaporator Core
1988ChevroletS10 BlazerN/AEvaporator Core
1988GMCS15N/AEvaporator Core
1988GMCS15 JimmyN/AEvaporator Core
1987ChevroletS10N/AEvaporator Core
1987ChevroletS10 BlazerN/AEvaporator Core
1987GMCS15N/AEvaporator Core
1987GMCS15 JimmyN/AEvaporator Core
1986ChevroletS10N/AEvaporator Core
1986ChevroletS10 BlazerN/AEvaporator Core
1986GMCS15N/AEvaporator Core
1986GMCS15 JimmyN/AEvaporator Core
1985ChevroletS10N/AEvaporator Core
1985ChevroletS10 BlazerN/AEvaporator Core
1985GMCS15N/AEvaporator Core
1985GMCS15 JimmyN/AEvaporator Core
1984ChevroletS10N/AEvaporator Core
1984ChevroletS10 BlazerN/AEvaporator Core
1984GMCS15N/AEvaporator Core
1984GMCS15 JimmyN/AEvaporator Core
1983ChevroletS10N/AEvaporator Core
1983ChevroletS10 BlazerN/AEvaporator Core
1983GMCS15N/AEvaporator Core
1983GMCS15 JimmyN/AEvaporator Core
1982ChevroletS10N/AEvaporator Core
1982GMCS15N/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:

01482328051815105452010670911154520V156575156709156709X16100122365752496369271922730422288078305041430913963770104471136052457451545205657559836963696369N65357065757154520720152770104788078A9774CWK770104E811015EP1006EP20003EV6575EV6709EV6709CEV6709PFCT54520YE6369

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