HomeHVAC > Motors, Core, Case and Related ComponentsFour Seasons 91499 HVAC Heater Core
Part #: 91499

Four Seasons 91499 HVAC Heater Core

Heater Core
⚙️ 5 vehicles fit this part
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Select your vehicle to confirm fitment
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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 Heater Core Replacement for Pontiac Fiero

The Four Seasons Heater Core 91499 is designed specifically for the Pontiac Fiero, providing efficient heating performance and durability. This copper/brass heater core meets or exceeds OEM standards to ensure proper fit and function in your vehicle's HVAC system.

  • Core dimensions: 6-1/4 inches length, width, and height
  • Core thickness and depth: 2 inches
  • Constructed from durable copper and brass materials
  • Tube sizes: 0.625 inch (15.875 mm) and 0.750 inch (19.05 mm)
  • Non-adjustable pipe positioning for direct OEM replacement
  • Compatible with Pontiac Fiero models

Four Seasons Heater Core Product Line Overview

The Four Seasons Heater Core line focuses on delivering reliable HVAC heater cores that meet or exceed original equipment manufacturer specifications. The 91499 model is part of this line, featuring copper/brass construction for enhanced heat transfer and corrosion resistance. This product line is engineered to provide consistent heating performance and long service life for vehicles like the Pontiac Fiero.

Detailed Product Description

This HVAC heater core from Four Seasons is built with a copper core and brass components, offering efficient heat exchange and durability. The core measures 6.25 inches in length, width, and height, with a thickness and depth of 2 inches, ensuring a precise fit for the Pontiac Fiero. The heater core includes two tubes sized at 0.625 inch and 0.750 inch, designed for seamless integration with the vehicle's heating system. The pipe positioning is fixed, matching the original equipment layout for straightforward replacement.

Common Applications and Issues Addressed

  • Restores heating function in Pontiac Fiero HVAC systems
  • Resolves coolant leaks within the heater core
  • Eliminates reduced cabin heat output due to clogged or damaged cores
  • Prevents overheating caused by inefficient heat exchange
  • Replaces corroded or deteriorated OEM heater cores

Installation Notes and Tips

When installing the Four Seasons Heater Core 91499, ensure the vehicle is cooled and the cooling system is properly drained before removal. The fixed pipe positioning requires alignment with existing HVAC hoses for a direct fit. Inspect all connections and seals during installation to prevent leaks. Follow the Pontiac Fiero service manual for detailed removal and installation procedures.

Quality Assurance and Warranty

The Four Seasons Heater Core 91499 is manufactured to meet or exceed OEM specifications, ensuring reliable performance and durability. This part undergoes rigorous quality control to maintain consistent standards. While specific warranty details are not provided, Four Seasons products typically come with a limited warranty against defects in materials and workmanship.

BrandFour Seasons
Part Number91499
PositionHeater Core
Length6-1/4
Thickness2
Width6-1/4
Core MaterialCopper
Adjustable Pipe PositioningNo
Core Depth IN2.000
Core Height IN6.250
Core Width IN6.250
DescriptionHeater cores
Meets / Exceeds OEM?Yes
StyleCopper/brass heater core
Tube 1 IN0.625
Tube 1 MM15.875
Tube 2 IN0.750
Tube 2 MM19.050
TypeHeater core /copper brass

This part fits 5 vehicles. Search below:

YearMakeModelPositionNotes
1988PontiacFieroN/ACompatible with models that do not have air conditioning.; Heater Core
1987PontiacFieroN/ACompatible with models that do not have air conditioning.; Heater Core
1986PontiacFieroN/ACompatible with models that do not have air conditioning.; Heater Core
1985PontiacFieroN/ACompatible with models that do not have air conditioning.; Heater Core
1984PontiacFieroN/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:

156003718117902468250299279158305218139820455449966033467024687091698204901020490204914999449998499GM8204H6260HT398204ZH299

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