Four Seasons 96121 HVAC Heater Core
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Four Seasons

Four Seasons 96121 HVAC Heater Core

Brand Four Seasons 96121
Core Depth IN 1.625
Core Height IN 1.94
Core Width IN 7.625
Description Heater cores
Material Aluminum
Style Aluminum heater core
Tube 1 IN 0.75
Tube 1 MM 19.05
Tube 2 IN 0.75
Tube 2 MM 19.05
Type Heater core /aluminum
Fits —

Aluminum construction. Helps transfer heat efficiently in a compact heater core design.

Heater core. A direct replacement component for restoring HVAC heating performance.

Four Seasons heritage. Backed by decades of mobile A/C experience and tested for dependable operation.

Cross-references Four Seasons 73629, Four Seasons 96121 and Gates 6926 for the same application. See all 19.

$229.02Free shipping
In stock · usually ships same day before 1pm CST
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Step 2 — Quantity
Order total $229.02
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Free returns within 60 days if it doesn't fit when fitment is verified.
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Four Seasons 96121 Heater Core

The Four Seasons 96121 heater core is an aluminum HVAC heater core built for dependable cabin heat transfer and consistent operation. It is a direct replacement option for drivers searching for a heater core for Four Seasons 96121, with dimensions that help confirm application before ordering.

Key Features

  • Aluminum heater core construction
  • Core depth: 1.625 in.
  • Core height: 1.94 in.
  • Core width: 7.625 in.
  • Tube size: 0.75 in. / 19.05 mm
  • Four Seasons heater core line for HVAC repair

Product Details

Four Seasons Heater Core 96121 is part of the brand’s heater core line and is engineered and tested for long service life in mobile air conditioning and heating systems. The aluminum design supports efficient heat exchange inside the HVAC case, while the compact core dimensions and 0.75-inch tube connections help match the original heater core layout during replacement. This part cross-references Gates 6926 for the same application.

Common Problems This Part Can Address

  • Weak or uneven cabin heat
  • Coolant odor inside the vehicle
  • Heater core leakage at the HVAC unit
  • Restricted heat output from a clogged core
  • Loss of defrost performance caused by poor heater performance

Installation Notes and Tips

Verify core depth, height, width, and tube diameter against the original unit before installation. Inspect heater hoses, clamps, and the HVAC case for wear or contamination while the system is open. Proper coolant refill and air bleeding are important after heater core replacement to restore normal heater operation.

Quality Assurance

Four Seasons backs this heater core with more than 50 years of mobile A/C experience and tests its products for trouble-free operation over time. The 96121 is built to support reliable HVAC repair and consistent heating performance.

Related reading

This part fits 0 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
Directly replaces or cross-references 19 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Four Seasons — 73629Four Seasons — 96121Gates — 6926Global Parts Distributors LLC — 1812022National — 710078Remy — 994121016085561219380701718006275461639466749231325BOA8055400009HT400099MC1635MC16350RF7271084213ZGG710078