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Four Seasons 98531 HVAC Heater CoreOE Quality 60-Day Returns
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Part #: 98531

Four Seasons 98531 HVAC Heater Core

Heater Core
⚙️ 56 vehicles fit this part
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✅OE Direct Replacement — Bolt-on fit, no modifications needed
📦Heater Core
🚗Fitment: Buick, Chevrolet, Oldsmobile, and Pontiac, Bel Air, Bonneville, Caprice, Catalina, Cutlass, Cutlass Supreme, El Camino, GTO, Impala, LeMans, Malibu, Skylark, and Tempest
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Reliable Heater Core Replacement for Classic GM Vehicles

The Four Seasons Heater Core 98531 is designed to restore efficient heating performance in select Buick, Chevrolet, Oldsmobile, and Pontiac models. Engineered with durable aluminum construction, this heater core ensures consistent heat transfer and long-lasting operation for vehicles like the Chevrolet Impala and Pontiac GTO.

  • Core dimensions: 9 inches length, 6-1/2 inches width, 1-7/8 inches thickness
  • Constructed from corrosion-resistant aluminum material
  • Compatible with Buick, Chevrolet, Oldsmobile, and Pontiac models including Bel Air, Caprice, Cutlass, and Malibu
  • OEM quality that meets or exceeds factory specifications
  • Tube sizes: 0.625 inch (15.875 mm) and 0.750 inch (19.05 mm) for proper coolant flow

Four Seasons Heater Core Product Line Overview

The Four Seasons Heater Core line focuses on delivering reliable HVAC components that meet or exceed OEM standards. The 98531 heater core is part of this line, offering precise fitment and durable aluminum construction to maintain optimal heating system performance in classic GM vehicles. This product line emphasizes quality materials and exact dimensions to ensure compatibility and longevity.

Detailed Product Description and Specifications

This HVAC heater core features a core height of 9 inches, width of 6.5 inches, and a depth of 1.875 inches, providing a compact yet efficient design. The aluminum core material offers enhanced heat dissipation and resistance to corrosion compared to traditional copper cores. The heater core does not include adjustable pipe positioning, maintaining a fixed configuration for straightforward installation. Tubes measure 0.625 inch and 0.75 inch in diameter, supporting proper coolant circulation within the heating system.

Common Applications and Problem Resolution

  • Restores heating functionality in Buick LeMans and Pontiac Catalina models
  • Replaces leaking or clogged heater cores causing coolant loss
  • Eliminates insufficient cabin heat due to core blockages
  • Prevents engine overheating related to heater core failures
  • Addresses corrosion and deterioration in Chevrolet Caprice and Oldsmobile Cutlass Supreme HVAC systems

Installation Notes and Tips

When installing the Four Seasons Heater Core 98531, ensure the vehicle is compatible by verifying make and model fitment. Drain the cooling system before removal to avoid spills. Handle the aluminum core carefully to prevent damage to the fins and tubes. Since this heater core does not have adjustable pipe positioning, confirm hose alignment prior to installation. Refill and bleed the cooling system after installation to remove air pockets and ensure proper operation.

Quality Assurance and Warranty Information

The Four Seasons Heater Core 98531 meets or exceeds OEM specifications, providing reliable performance for your vehicle's heating system. Manufactured with corrosion-resistant aluminum, this heater core is built for durability. While specific warranty details are not provided, Four Seasons products typically come with a limited warranty covering defects in materials and workmanship.

BrandFour Seasons
Part Number98531
PositionHeater Core
Length9
Thickness1-7/8
Width6-1/2
Core MaterialAluminum
Adjustable Pipe PositioningNo
Core Depth IN1.875
Core Height IN9.000
Core Width IN6.500
DescriptionHeater cores
Meets / Exceeds OEM?Yes
StyleAluminum heater core
Tube 1 IN0.625
Tube 1 MM15.875
Tube 2 IN0.750
Tube 2 MM19.050
TypeHeater core /aluminum

This part fits 56 vehicles. Search below:

YearMakeModelSubmodelPositionNotes
1968ChevroletBel AirN/Aw/o AC; Heater Core
1968ChevroletCapriceN/ACompatible with models that do not have air conditioning.; Heater Core
1968ChevroletImpalaN/ACompatible with models that do not have air conditioning.; Heater Core
1967BuickSkylarkN/ACompatible with models that do not have air conditioning.; Heater Core
1967ChevroletBel AirN/Aw/o AC; Heater Core
1967ChevroletCapriceN/ACompatible with models that do not have air conditioning.; Heater Core
1967ChevroletEl CaminoN/ACompatible with models that do not have air conditioning.; Heater Core
1967ChevroletImpalaN/ACompatible with models that do not have air conditioning.; Heater Core
1967ChevroletMalibuN/ACompatible with models that do not have air conditioning.; Heater Core
1967OldsmobileCutlassN/ACompatible with models that do not have air conditioning.; Heater Core
1967OldsmobileCutlass SupremeN/ACompatible with models that do not have air conditioning.; Heater Core
1967PontiacBonnevilleSafariN/ACompatible with models that do not have air conditioning.; Heater Core
1967PontiacCatalinaSafariN/ACompatible with models that do not have air conditioning.; Heater Core
1967PontiacGTON/ACompatible with models that do not have air conditioning.; Heater Core
1967PontiacLeMansN/ACompatible with models that do not have air conditioning.; Heater Core
1967PontiacTempestN/ACompatible with models that do not have air conditioning.; Heater Core
1967PontiacTempestBaseN/ACompatible with models that do not have air conditioning.; Heater Core
1967PontiacTempestCustomN/ACompatible with models that do not have air conditioning.; Heater Core
1967PontiacTempestSafariN/ACompatible with models that do not have air conditioning.; Heater Core
1966BuickSkylarkN/ACompatible with models that do not have air conditioning.; Heater Core
1966ChevroletBel AirN/Aw/o AC; Heater Core
1966ChevroletCapriceN/ACompatible with models that do not have air conditioning.; Heater Core
1966ChevroletEl CaminoN/ACompatible with models that do not have air conditioning.; Heater Core
1966ChevroletImpalaN/ACompatible with models that do not have air conditioning.; Heater Core
1966ChevroletMalibuN/ACompatible with models that do not have air conditioning.; Heater Core
1966OldsmobileCutlassN/ACompatible with models that do not have air conditioning.; Heater Core
1966PontiacBonnevilleSafariN/ACompatible with models that do not have air conditioning.; Heater Core
1966PontiacCatalinaSafariN/ACompatible with models that do not have air conditioning.; Heater Core
1966PontiacGTON/ACompatible with models that do not have air conditioning.; Heater Core
1966PontiacLeMansN/ACompatible with models that do not have air conditioning.; Heater Core
1966PontiacTempestN/ACompatible with models that do not have air conditioning.; Heater Core
1966PontiacTempestBaseN/ACompatible with models that do not have air conditioning.; Heater Core
1966PontiacTempestCustomN/ACompatible with models that do not have air conditioning.; Heater Core
1966PontiacTempestSafariN/ACompatible with models that do not have air conditioning.; Heater Core
1965BuickSkylarkN/ACompatible with models that do not have air conditioning.; Heater Core
1965ChevroletBel AirN/Aw/o AC; Heater Core
1965ChevroletEl CaminoN/ACompatible with models that do not have air conditioning.; Heater Core
1965ChevroletImpalaN/ACompatible with models that do not have air conditioning.; Heater Core
1965ChevroletMalibuN/ACompatible with models that do not have air conditioning.; Heater Core
1965OldsmobileCutlassN/ACompatible with models that do not have air conditioning.; Heater Core
1965PontiacBonnevilleSafariN/ACompatible with models that do not have air conditioning.; Heater Core
1965PontiacCatalinaSafariN/ACompatible with models that do not have air conditioning.; Heater Core
1965PontiacGTON/ACompatible with models that do not have air conditioning.; Heater Core
1965PontiacLeMansN/ACompatible with models that do not have air conditioning.; Heater Core
1965PontiacTempestN/ACompatible with models that do not have air conditioning.; Heater Core
1965PontiacTempestBaseN/ACompatible with models that do not have air conditioning.; Heater Core
1965PontiacTempestCustomN/ACompatible with models that do not have air conditioning.; Heater Core
1965PontiacTempestSafariN/ACompatible with models that do not have air conditioning.; Heater Core
1964BuickSkylarkN/ACompatible with models that do not have air conditioning.; Heater Core
1964ChevroletBel AirN/ACompatible with models that do not have air conditioning.; Heater Core
1964ChevroletEl CaminoN/ACompatible with models that do not have air conditioning.; Heater Core
1964ChevroletImpalaN/ACompatible with models that do not have air conditioning.; Heater Core
1964OldsmobileCutlassN/ACompatible with models that do not have air conditioning.; Heater Core
1964PontiacGTON/ACompatible with models that do not have air conditioning.; Heater Core
1964PontiacTempestN/ACompatible with models that do not have air conditioning.; Heater Core
1963ChevroletBel AirN/ACompatible with models that do not have air conditioning.; Heater 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:

1811301214725011527910230048143004819302206939904039904539906446030165545316603016660356970214770219670912182312689010057904090400945319453119612298531GM9040GM9045GM9064H2178HT399040HT399045HT399064ZH115

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

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