HomeHVAC > Motors, Core, Case and Related ComponentsFour Seasons 90498 HVAC Heater Core
Part #: 90498

Four Seasons 90498 HVAC Heater Core

Heater Core
⚙️ 5 vehicles fit this part
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Select your vehicle to confirm fitment
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✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
📦Heater Core
🚗Fitment: Pontiac, Fiero
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Aluminum Heater Core for Pontiac Fiero

The Four Seasons Heater Core 90498 is designed specifically for the Pontiac Fiero, providing efficient heating performance and durability. Crafted from aluminum, this heater core ensures effective heat transfer and long-lasting operation in your vehicle's HVAC system.

  • Core dimensions: 6.25 inches width, 5.375 inches height, 2 inches depth
  • Constructed from lightweight, corrosion-resistant aluminum
  • Tube sizes: 0.625 inch (15.88 mm) and 0.75 inch (19.05 mm) for optimal coolant flow
  • Compatible with Pontiac Fiero models requiring an aluminum heater core
  • Part number 90498 for precise identification and fitment

About the Four Seasons Heater Core Product Line

The Four Seasons Heater Core line focuses on delivering reliable HVAC heater cores made from aluminum, designed to meet or exceed OEM specifications. This product line emphasizes durability and efficient heat exchange, making it suitable for vehicles like the Pontiac Fiero that require dependable heating components.

Product Details and Specifications

This aluminum heater core features a compact design with a core width of 6.25 inches, height of 5.375 inches, and a depth of 2 inches, allowing it to fit precisely within the Pontiac Fiero's HVAC system. The dual tube sizes of 0.625 inch and 0.75 inch facilitate proper coolant circulation, ensuring consistent cabin heating. The aluminum construction offers resistance to corrosion and contributes to the overall longevity of the heater core.

Common Applications and Issues Addressed

  • Restores heating functionality in Pontiac Fiero vehicles with failing or leaking heater cores
  • Prevents coolant leaks that can cause engine overheating
  • Eliminates reduced cabin heat output due to clogged or damaged cores
  • Replaces corroded or deteriorated heater cores to maintain HVAC system efficiency

Installation Notes and Tips

When installing the Four Seasons Heater Core 90498, ensure the vehicle is properly drained of coolant to avoid spills. Verify tube connections match the specified sizes (0.625 inch and 0.75 inch) for a secure fit. It is recommended to inspect and replace any worn hoses or clamps during installation to prevent future leaks. Follow the Pontiac Fiero service manual for detailed removal and installation procedures.

Quality Assurance and Warranty

Four Seasons provides this heater core with a focus on quality and durability. Manufactured to meet industry standards, the part number 90498 undergoes rigorous testing to ensure reliable performance. Please refer to Four Seasons' warranty policy for specific coverage details.

BrandFour Seasons
Part Number90498
PositionHeater Core
Core Depth IN2
Core Height IN5.375
Core Width IN6.25
DescriptionHeater cores
MaterialAluminum
StyleAluminum heater core
Tube 1 IN0.625
Tube 1 MM15.88
Tube 2 IN.750
Tube 2 MM19.05
TypeHeater core /aluminum

This part fits 5 vehicles. Search below:

YearMakeModelPositionNotes
1988PontiacFieroN/ANew Part; Heater Core
1987PontiacFieroN/ANew Part; Heater Core
1986PontiacFieroN/ANew Part; Heater Core
1985PontiacFieroN/ANew Part; Heater Core
1984PontiacFieroN/Aw/ AC; 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:

156003815633281811789246924832502982754234305242739820346033105247988155349866033107024837091128203823125890101869020390498934989449898498GM8203H6201HT398203ZH298

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