HomeHVAC > Motors, Core, Case and Related ComponentsFour Seasons 91800 HVAC Heater Core
Part #: 91800

Four Seasons 91800 HVAC Heater Core

Heater Core
⚙️ 3 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: Toyota, Camry
🔄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 Toyota Camry

The Four Seasons Heater Core 91800 is designed to restore efficient heating performance in your Toyota Camry. Engineered with durable aluminum construction, this heater core ensures consistent heat transfer and long-lasting operation.

  • Core dimensions: 8-1/2 inches length, 6-1/2 inches width, 1-1/4 inches thickness
  • Constructed from corrosion-resistant aluminum material
  • Core depth of 1.25 inches, height of 8.5 inches, and width of 6.5 inches
  • Tube diameter: 0.625 inches (15.875 mm) for both inlet and outlet
  • Meets or exceeds OEM specifications for Toyota Camry applications
  • Non-adjustable pipe positioning for direct fit installation

About the Four Seasons Heater Core Product Line

The Four Seasons Heater Core line focuses on delivering reliable HVAC components that meet or exceed original equipment manufacturer standards. The 91800 heater core is part of this line, offering a precise fit and durable aluminum core material to maintain optimal heating system performance in Toyota Camry vehicles.

Product Details and Specifications

This HVAC heater core features an aluminum core designed for efficient heat exchange and corrosion resistance. The core measures 8.5 inches in height, 6.5 inches in width, and 1.25 inches in depth, providing a compact yet effective heating solution. Both inlet and outlet tubes have a diameter of 0.625 inches (15.875 mm), ensuring compatibility with the Toyota Camry’s existing HVAC plumbing. The fixed pipe positioning simplifies installation by matching OEM configurations without the need for adjustments.

Common Issues Addressed by This Heater Core

  • Insufficient cabin heat due to clogged or leaking heater core
  • Coolant leaks inside the vehicle’s HVAC system
  • Fogging or moisture buildup on interior windows
  • Overheating caused by compromised heater core function
  • Unpleasant odors from coolant contamination in the cabin

Installation Notes and Tips

When replacing the heater core in a Toyota Camry, ensure the cooling system is properly drained before removal. The Four Seasons 91800 heater core is designed for direct replacement without adjustable pipe positioning, so alignment with existing hoses should be straightforward. Inspect all related HVAC components and hoses for wear or damage during installation to maintain system integrity.

Quality Assurance and Warranty

The Four Seasons Heater Core 91800 meets or exceeds OEM standards, providing reliable performance and durability. This part is manufactured with high-quality aluminum core material to resist corrosion and extend service life. Please refer to Four Seasons’ warranty policy for specific coverage details.

BrandFour Seasons
Part Number91800
PositionHeater Core
Length8-1/2
Thickness1-1/4
Width6-1/2
Core MaterialAluminum
Adjustable Pipe PositioningNo
Core Depth IN1.250
Core Height IN8.500
Core Width IN6.500
DescriptionHeater cores
Meets / Exceeds OEM?Yes
StyleAluminum heater core
Tube 1 IN0.625
Tube 1 MM15.875
Tube 2 IN0.625
Tube 2 MM15.875
TypeHeater core /aluminum

This part fits 3 vehicles. Search below:

YearMakeModelPositionNotes
1999ToyotaCamryN/ATo 8/98; Heater Core
1998ToyotaCamryN/AHeater Core
1997ToyotaCamryN/AHeater 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:

18114682794073992175548006603628809290823145487107060209010393918009480098800HT398348CHT399999

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