HomeHVAC > Motors, Core, Case and Related ComponentsFour Seasons 92178 HVAC Heater Core
Part #: 92178

Four Seasons 92178 HVAC Heater Core

Heater Core
⚙️ 3 vehicles fit this part
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Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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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, Highlander
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Four Seasons Heater Core 92178 for Toyota Highlander

The Four Seasons Heater Core 92178 is designed specifically for Toyota Highlander models, providing reliable heating performance. This aluminum heater core meets or exceeds OEM standards, ensuring compatibility and durability for your vehicle's HVAC system.

  • Core dimensions: 7-7/8 inches length, 6 inches width, 1-1/4 inches thickness
  • Constructed from durable aluminum material
  • Core depth of 1.25 inches and height of 7.875 inches
  • Tube diameter: 0.6875 inches (17.4625 mm) for both inlet and outlet
  • Non-adjustable pipe positioning for precise fitment
  • Meets or exceeds original equipment manufacturer specifications

Four Seasons Heater Core Product Line Details

The Four Seasons Heater Core product line focuses on delivering reliable HVAC heater cores engineered to match OEM specifications. The 92178 model is part of this line, featuring aluminum construction for efficient heat transfer and corrosion resistance. This line is designed to provide consistent heating performance and long service life for vehicles like the Toyota Highlander.

Product Description and Specifications

This HVAC heater core is built with an aluminum core material that offers effective heat dissipation and resistance to corrosion. The core measures 7-7/8 inches in length, 6 inches in width, and 1-1/4 inches in thickness, with a core depth of 1.25 inches and height of 7.875 inches. Both inlet and outlet tubes have a diameter of 0.6875 inches (17.4625 mm), ensuring proper coolant flow. The pipe positioning is fixed, which guarantees a precise fit for the Toyota Highlander HVAC system. The Four Seasons 92178 heater core is engineered to meet or exceed OEM quality standards, making it a suitable replacement part for maintaining your vehicle's heating efficiency.

Common Applications and Issues Addressed

  • Restores heating function in Toyota Highlander HVAC systems
  • Replaces leaking or clogged heater cores
  • Eliminates coolant odors inside the vehicle cabin
  • Prevents engine overheating caused by heater core failure
  • Resolves inconsistent or insufficient cabin heat output

Installation Notes and Tips

When installing the Four Seasons Heater Core 92178, ensure the vehicle is properly cooled down and the cooling system is depressurized. Follow the Toyota Highlander service manual for heater core removal and installation procedures. Since the pipe positioning is fixed, verify alignment before securing connections. Inspect all hoses and clamps for wear and replace as necessary to prevent leaks. Properly bleed the cooling system after installation to avoid air pockets.

Quality Assurance and Warranty

The Four Seasons Heater Core 92178 is manufactured to meet or exceed OEM specifications, ensuring reliable performance and durability. This part undergoes quality control testing to maintain consistent standards. Please refer to Four Seasons' warranty policy for specific coverage details related to this heater core.

BrandFour Seasons
Part Number92178
PositionHeater Core
Length7-7/8
Thickness1-1/4
Width6
Core MaterialAluminum
Adjustable Pipe PositioningNo
Core Depth IN1.250
Core Height IN7.875
Core Width IN6.000
DescriptionHeater cores
Meets / Exceeds OEM?Yes
StyleAluminum heater core
Tube 1 IN0.6875
Tube 1 MM17.4625
Tube 2 IN0.6875
Tube 2 MM17.4625
TypeHeater core /aluminum

This part fits 3 vehicles. Search below:

YearMakeModelPositionNotes
2003ToyotaHighlanderN/AHeater Core
2002ToyotaHighlanderN/AHeater Core
2001ToyotaHighlanderN/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:

181197639925855117882315218710748040901044291178921789897999258HT2086C

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