Four Seasons 54621 rear A/C evaporator core for the 2022-2024 Chevrolet Express 4500 and other vehicles absorbs heat from cabin air as refrigerant flows through its plate and fin core. The core design meets or exceeds OE performance and efficiency.
- Engineered and tested to provide years of trouble-free operation
- Plate and fin core made of aluminum
- Optimized refrigerant flow through the core
- Application specific design
- Female O-ring inlet fitting and block outlet fitting
Quick facts
- Part: Four Seasons 54621 A/C evaporator core
- Fits: 2022-2024 Chevrolet Express 4500 and other vehicles
- Position: Rear
- Material: Aluminum
- Condition: New
Weak cooling or a refrigerant leak can mean the evaporator core is worn, though a low refrigerant charge or a failing compressor can be behind weak cooling too, so find the cause before you replace the core.
Fits
This rear A/C evaporator core is a direct-fit replacement for the 1997-2024 Chevrolet Express 2500, the 1997-2024 Chevrolet Express 3500 and many other Chevrolet and GMC models. If your vehicle is not named here, look up your year and model in the "Vehicles it fits" section.
Specifications
Fit and size
- Position: Rear
- Quantity per vehicle: 1
- Height: 8 in
- Width: 11.13 in
- Depth: 2.875 in
- Inlet fitting: female O-ring
- Outlet fitting: block fitting
Build and materials
- Type: Plate and fin
- Material: Aluminum
- Condition: New
- Country of origin: China
In the box
One evaporator core with one each of O-rings 24608 and 24646 and slim line sealing washers 24403 and 24404. This listing is one core, and the vehicle takes one.
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
Is the Four Seasons 54621 evaporator core right for a 2022-2024 Chevrolet Express 4500?
Yes. Four Seasons 54621 is a rear A/C evaporator core for the 2022-2024 Chevrolet Express 4500. For a different vehicle, find your year and model in the "Vehicles it fits" section.
Does the Four Seasons 54621 fit a 1997-2024 Chevrolet Express 2500?
Yes. Four Seasons 54621 is a rear A/C evaporator core for the 1997-2024 Chevrolet Express 2500, and the vehicle takes one.
What seals come with this plate and fin evaporator core?
Four Seasons 54621 comes with four sealing pieces, one of each: O-rings 24608 and 24646 and slim line sealing washers 24403 and 24404.
What fittings and size does this aluminum evaporator core have?
The inlet is a female O-ring fitting and the outlet is a block fitting. The aluminum core measures 8 in high, 11.13 in wide and 2.875 in deep.
How can I tell if a rear evaporator core is going bad?
Weak cooling and a refrigerant leak are the common signs. A shop can leak-test the A/C system, since checking it means handling refrigerant.
