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Four Seasons 92178 HVAC Heater Core
| Brand | Four Seasons 92178 |
|---|---|
| Length | 7-7/8 |
| Thickness | 1-1/4 |
| Width | 6 |
| Core Material | Aluminum |
| Adjustable Pipe Positioning | No |
| Core Depth IN | 1.250 |
| Core Height IN | 7.875 |
| Core Width IN | 6.000 |
| Description | Heater cores |
| Meets / Exceeds OEM? | Yes |
| Style | Aluminum heater core |
| Tube 1 IN | 0.6875 |
| Tube 1 MM | 17.4625 |
| Tube 2 IN | 0.6875 |
| Tube 2 MM | 17.4625 |
| Type | Heater core /aluminum |
| Product line | Heater Core |
| Fits | Toyota · 3 vehicles |
OE direct replacement. Meets or exceeds OEM requirements for a straightforward swap.
Aluminum core. Lightweight construction helps transfer heat efficiently.
Heater core. Built for dependable cabin heat performance.
Cross-references Four Seasons 92178, Global Parts Distributors LLC 1811976 and Global Parts Distributors LLC 8231521 for the same application. See all 11.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Four Seasons 92178 Heater Core for Highlander
The Four Seasons 92178 heater core is an aluminum HVAC replacement built for 2001-2003 Toyota Highlander models. It is sized to match the listed application and meets or exceeds OEM requirements for a direct-fit heater core service part.
Key Features
- Brand: Four Seasons Heater Core line
- Part number: 92178
- Aluminum heater core construction
- Core material: aluminum
- Core dimensions: 7-7/8 in. height, 6 in. width, 1-1/4 in. depth
- Tube size: 0.6875 in. / 17.4625 mm on both connections
- Meets or exceeds OEM specifications
- Direct application for 2001-2003 Toyota Highlander heater core replacement
Detailed Description
Four Seasons 92178 is an aluminum HVAC heater core designed for the heating system in 2001, 2002, and 2003 Toyota Highlander vehicles. The compact core measures 7-7/8 inches high, 6 inches wide, and 1-1/4 inches thick, with matching 0.6875-inch tube connections for the listed application. If you are replacing a leaking, restricted, or inefficient heater core in a Toyota Highlander, this part number 92178 provides an OE-style service solution built to the specified dimensions.
This part cross-references Nissens 91178 and Spectra Premium 99258 for the same application.
Vehicle Fitment
- Fits 2001-2003 Toyota Highlander, N/A
Common Issues This Part May Address
- Weak or inconsistent cabin heat
- Coolant odor inside the vehicle
- Coolant loss from a leaking heater core
- Fogging or film on the inside of the windshield caused by HVAC coolant seepage
- Restricted coolant flow through the heater core
Installation Notes and Tips
Verify the core dimensions and tube size against the removed unit before installation. Inspect heater hoses, clamps, and the HVAC case for wear or contamination while servicing the system. Proper coolant refill and air bleeding are important after heater core replacement to restore normal heater performance.
Quality Assurance
Four Seasons lists this heater core as meeting or exceeding OEM requirements for the specified application. The Four Seasons Heater Core line is built for direct replacement service in HVAC repair work.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2003 | Toyota | Highlander | N/A | Heater Core |
| 2002 | Toyota | Highlander | N/A | Heater Core |
| 2001 | Toyota | Highlander | N/A | Heater Core |
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