Four Seasons 54621 A/C Evaporator Core - Rear

OE Quality 60-Day Returns

Evaporator Core

Four Seasons 54621 A/C Evaporator Core - Rear

Brand	Four Seasons 54621
Position	Rear
Core Depth Fraction	2-7/8
Core Depth MM	73.025
Core Height Fraction	8
Core Height MM	203.200
Core Width Fraction	11-1/8
Core Width MM	282.575
Depth	2.875
Description	Evaporator Cores
Height	8.000
Inlet Fitting Outside Diameter	No. 8
Inlet Fitting Type	Female O-Ring
Material	Aluminum
O-Ring A Number/Desc	[24608] / Green O-Ring
O-Ring B Number/Desc	[24646] / Green O-Ring
O-Ring C Number/Desc	[24403] / Slimline Washer
O-Ring D Number/Desc	[24404] / Slimline Washer
Outlet Fitting Type	Block Fitting
Type	Plate & Fin
Width	11.125
Product line	Evaporator Core
Fits	Chevrolet and GMC · 158 vehicles

OE-style replacement. Plate-and-fin evaporator core for straightforward service replacement.

Aluminum construction. Helps transfer heat efficiently while keeping weight down.

Female O-ring inlet. Block-fitting outlet for secure, leak-resistant connections.

Cross-references Four Seasons 6583N, Four Seasons 54621 and Global Parts Distributors LLC 4711442 for the same application. See all 32.

$120.83Free shipping

In stock · usually ships same day before 1pm CST

Step 1 — Confirm fitment

Free return shipping if it doesn't fit when you check fitment here first.

Confirm position

Select your vehicle to confirm fitment

Verify this part fits before purchasing — free returns if it doesn't

Step 2 — Quantity

Free shipping to the continental U.S.

Free returns within 60 days if it doesn't fit when fitment is verified.

Not what you need? See all A/C Evaporator Core options

Rear A/C Evaporator Core for GM Vans

Four Seasons 54621 is a rear A/C evaporator core built for select Chevrolet Express and GMC Savana applications. It uses a plate-and-fin aluminum construction with OE-style fitting layouts to support rear cabin cooling performance in full-size vans.

Key Features

Plate & fin evaporator core construction
Aluminum core material for efficient heat transfer
Width: 11.125 in. | Height: 8.000 in. | Depth: 2.875 in.
Core dimensions: 11-1/8 in. wide, 8 in. high, 2-7/8 in. deep
Inlet fitting: No. 8 female O-ring
Outlet fitting: block fitting
Includes OE-style sealing references: Green O-Ring and slimline washer applications
Four Seasons Evaporator Core line for HVAC service replacement

Detailed Description

This Four Seasons evaporator core, part number 54621, is a rear HVAC service component for Chevrolet Express 1500, 2500, and 3500 models, GMC Savana 1500, 2500, and 3500 models, and Chevrolet G30 applications listed below. The aluminum plate-and-fin design is sized at 11.125 inches wide, 8.000 inches high, and 2.875 inches deep, with a No. 8 female O-ring inlet and block-fitting outlet for the rear evaporator assembly. This part cross-references UAC EV6956PFC for the same application.

The Four Seasons Evaporator Core product line focuses on replacement HVAC cores that match common OE-style dimensions and connection types. For buyers searching for a rear A/C evaporator core for Chevrolet Express or GMC Savana vans, Four Seasons 54621 provides a direct-fit service option for the rear climate system.

What It Is Used For

Restoring rear cabin cooling in Chevrolet Express and GMC Savana vans
Replacing a leaking or corroded rear evaporator core
Addressing weak rear A/C output caused by restricted airflow through the core
Repairing HVAC performance after refrigerant loss at the evaporator assembly
Servicing rear climate control systems in full-size GM vans

Installation Notes and Tips

Verify the inlet and outlet fitting style, core dimensions, and rear-position application before installation. Inspect the evaporator case, seals, and related A/C components for contamination or wear during service. Proper evacuation, leak checking, and refrigerant recharge procedures are required after replacement. Confirm vehicle-specific fitment for the exact model year and rear HVAC configuration.

Quality Assurance

Four Seasons manufactures HVAC replacement components for service applications that require OE-style fit and function. Part number 54621 is built as an aluminum plate-and-fin evaporator core for the listed rear applications and is supported by interchange references including Spectra Premium 1054621 and UAC EV6956PFC.

Compatible Vehicles

Fits 1997-2024 Chevrolet Express 2500, Rear
Fits 1997-2024 Chevrolet Express 3500, Rear
Fits 1997-2024 GMC Savana 2500, Rear
Fits 1997-2024 GMC Savana 3500, Rear
Fits 1997-2014 Chevrolet Express 1500, Rear
Fits 1997-2014 GMC Savana 1500, Rear
Fits 2001-2002 Chevrolet G30, Rear

This part fits 158 vehicles

Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

Year	Make	Model	Liters	Cylinders	Fuel Type	Position	Notes
2024	Chevrolet	Express 2500	—	—	—	Rear	Evaporator Core
2024	Chevrolet	Express 3500	—	—	—	Rear	Evaporator Core
2024	GMC	Savana 2500	—	—	—	Rear	Evaporator Core
2024	GMC	Savana 3500	—	—	—	Rear	Evaporator Core
2023	Chevrolet	Express 2500	—	—	—	Rear	Evaporator Core
2023	Chevrolet	Express 3500	—	—	—	Rear	Evaporator Core
2023	GMC	Savana 2500	—	—	—	Rear	Evaporator Core
2023	GMC	Savana 3500	—	—	—	Rear	Evaporator Core
2022	Chevrolet	Express 2500	—	—	—	Rear	Evaporator Core
2022	Chevrolet	Express 3500	—	—	—	Rear	Evaporator Core
2022	GMC	Savana 2500	—	—	—	Rear	Evaporator Core
2022	GMC	Savana 3500	—	—	—	Rear	Evaporator Core
2021	Chevrolet	Express 2500	—	—	—	Rear	Evaporator Core
2021	Chevrolet	Express 3500	—	—	—	Rear	Evaporator Core
2021	GMC	Savana 2500	—	—	—	Rear	Evaporator Core
2021	GMC	Savana 3500	—	—	—	Rear	Evaporator Core
2020	Chevrolet	Express 2500	—	—	—	Rear	Evaporator Core
2020	Chevrolet	Express 3500	—	—	—	Rear	Evaporator Core
2020	GMC	Savana 2500	—	—	—	Rear	Evaporator Core
2020	GMC	Savana 3500	—	—	—	Rear	Evaporator Core
2019	Chevrolet	Express 2500	—	—	—	Rear	Evaporator Core
2019	Chevrolet	Express 3500	—	—	—	Rear	Evaporator Core
2019	GMC	Savana 2500	—	—	—	Rear	Evaporator Core
2019	GMC	Savana 3500	—	—	—	Rear	Evaporator Core
2018	Chevrolet	Express 2500	—	—	—	Rear	Evaporator Core
2018	Chevrolet	Express 3500	—	—	—	Rear	Evaporator Core
2018	GMC	Savana 2500	—	—	—	Rear	Evaporator Core
2018	GMC	Savana 3500	—	—	—	Rear	Evaporator Core
2017	Chevrolet	Express 2500	—	—	—	Rear	Evaporator Core
2017	Chevrolet	Express 3500	—	—	—	Rear	Evaporator Core
2017	GMC	Savana 2500	—	—	—	Rear	Evaporator Core
2017	GMC	Savana 3500	—	—	—	Rear	Evaporator Core
2016	Chevrolet	Express 2500	—	—	—	Rear	Evaporator Core
2016	Chevrolet	Express 3500	—	—	—	Rear	Evaporator Core
2016	GMC	Savana 2500	—	—	—	Rear	Evaporator Core
2016	GMC	Savana 3500	—	—	—	Rear	Evaporator Core
2015	Chevrolet	Express 2500	6.0L	V8	FLEX	Rear	Evaporator Core
2015	Chevrolet	Express 2500	4.8L	V8	FLEX	Rear	Evaporator Core
2015	Chevrolet	Express 2500	6.6L	V8	DIESEL	Rear	Evaporator Core
2015	Chevrolet	Express 3500	6.0L	V8	FLEX	Rear	Evaporator Core
2015	Chevrolet	Express 3500	4.8L	V8	FLEX	Rear	Evaporator Core
2015	Chevrolet	Express 3500	6.6L	V8	DIESEL	Rear	Evaporator Core
2015	GMC	Savana 2500	6.0L	V8	FLEX	Rear	Evaporator Core
2015	GMC	Savana 2500	4.8L	V8	FLEX	Rear	Evaporator Core
2015	GMC	Savana 2500	6.6L	V8	DIESEL	Rear	Evaporator Core
2015	GMC	Savana 3500	6.0L	V8	FLEX	Rear	Evaporator Core
2015	GMC	Savana 3500	4.8L	V8	FLEX	Rear	Evaporator Core
2015	GMC	Savana 3500	6.6L	V8	DIESEL	Rear	Evaporator Core
2014	Chevrolet	Express 1500	—	—	—	Rear	Evaporator Core
2014	Chevrolet	Express 2500	—	—	—	Rear	Evaporator Core
2014	Chevrolet	Express 3500	—	—	—	Rear	Evaporator Core
2014	GMC	Savana 1500	—	—	—	Rear	Evaporator Core
2014	GMC	Savana 2500	—	—	—	Rear	Evaporator Core
2014	GMC	Savana 3500	—	—	—	Rear	Evaporator Core
2013	Chevrolet	Express 1500	—	—	—	Rear	Evaporator Core
2013	Chevrolet	Express 2500	—	—	—	Rear	Evaporator Core
2013	Chevrolet	Express 3500	—	—	—	Rear	Evaporator Core
2013	GMC	Savana 1500	—	—	—	Rear	Evaporator Core
2013	GMC	Savana 2500	—	—	—	Rear	Evaporator Core
2013	GMC	Savana 3500	—	—	—	Rear	Evaporator Core
2012	Chevrolet	Express 1500	—	—	—	Rear	Evaporator Core
2012	Chevrolet	Express 2500	—	—	—	Rear	Evaporator Core
2012	Chevrolet	Express 3500	—	—	—	Rear	Evaporator Core
2012	GMC	Savana 1500	—	—	—	Rear	Evaporator Core
2012	GMC	Savana 2500	—	—	—	Rear	Evaporator Core
2012	GMC	Savana 3500	—	—	—	Rear	Evaporator Core
2011	Chevrolet	Express 1500	—	—	—	Rear	Evaporator Core
2011	Chevrolet	Express 2500	—	—	—	Rear	Evaporator Core
2011	Chevrolet	Express 3500	—	—	—	Rear	Evaporator Core
2011	GMC	Savana 1500	—	—	—	Rear	Evaporator Core
2011	GMC	Savana 2500	—	—	—	Rear	Evaporator Core
2011	GMC	Savana 3500	—	—	—	Rear	Evaporator Core
2010	Chevrolet	Express 1500	—	—	—	Rear	Evaporator Core
2010	Chevrolet	Express 2500	—	—	—	Rear	Evaporator Core
2010	Chevrolet	Express 3500	—	—	—	Rear	Evaporator Core
2010	GMC	Savana 1500	—	—	—	Rear	Evaporator Core
2010	GMC	Savana 2500	—	—	—	Rear	Evaporator Core
2010	GMC	Savana 3500	—	—	—	Rear	Evaporator Core
2009	Chevrolet	Express 1500	—	—	—	Rear	Evaporator Core
2009	Chevrolet	Express 2500	—	—	—	Rear	Evaporator Core
2009	Chevrolet	Express 3500	—	—	—	Rear	Evaporator Core
2009	GMC	Savana 1500	—	—	—	Rear	Evaporator Core
2009	GMC	Savana 2500	—	—	—	Rear	Evaporator Core
2009	GMC	Savana 3500	—	—	—	Rear	Evaporator Core
2008	Chevrolet	Express 1500	—	—	—	Rear	Evaporator Core
2008	Chevrolet	Express 2500	—	—	—	Rear	Evaporator Core
2008	Chevrolet	Express 3500	—	—	—	Rear	Evaporator Core
2008	GMC	Savana 1500	—	—	—	Rear	Evaporator Core
2008	GMC	Savana 2500	—	—	—	Rear	Evaporator Core
2008	GMC	Savana 3500	—	—	—	Rear	Evaporator Core
2007	Chevrolet	Express 1500	—	—	—	Rear	Evaporator Core
2007	Chevrolet	Express 2500	—	—	—	Rear	Evaporator Core
2007	Chevrolet	Express 3500	—	—	—	Rear	Evaporator Core
2007	GMC	Savana 1500	—	—	—	Rear	Evaporator Core
2007	GMC	Savana 2500	—	—	—	Rear	Evaporator Core
2007	GMC	Savana 3500	—	—	—	Rear	Evaporator Core
2006	Chevrolet	Express 1500	—	—	—	Rear	Evaporator Core
2006	Chevrolet	Express 2500	—	—	—	Rear	Evaporator Core
2006	Chevrolet	Express 3500	—	—	—	Rear	Evaporator Core
2006	GMC	Savana 1500	—	—	—	Rear	Evaporator Core
2006	GMC	Savana 2500	—	—	—	Rear	Evaporator Core
2006	GMC	Savana 3500	—	—	—	Rear	Evaporator Core
2005	Chevrolet	Express 1500	—	—	—	Rear	Evaporator Core
2005	Chevrolet	Express 2500	—	—	—	Rear	Evaporator Core
2005	Chevrolet	Express 3500	—	—	—	Rear	Evaporator Core
2005	GMC	Savana 1500	—	—	—	Rear	Evaporator Core
2005	GMC	Savana 2500	—	—	—	Rear	Evaporator Core
2005	GMC	Savana 3500	—	—	—	Rear	Evaporator Core
2004	Chevrolet	Express 1500	—	—	—	Rear	Evaporator Core
2004	Chevrolet	Express 2500	—	—	—	Rear	Evaporator Core
2004	Chevrolet	Express 3500	—	—	—	Rear	Evaporator Core
2004	GMC	Savana 1500	—	—	—	Rear	Evaporator Core
2004	GMC	Savana 2500	—	—	—	Rear	Evaporator Core
2004	GMC	Savana 3500	—	—	—	Rear	Evaporator Core
2003	Chevrolet	Express 1500	—	—	—	Rear	Evaporator Core
2003	Chevrolet	Express 2500	—	—	—	Rear	Evaporator Core
2003	Chevrolet	Express 3500	—	—	—	Rear	Evaporator Core
2003	GMC	Savana 1500	—	—	—	Rear	Evaporator Core
2003	GMC	Savana 2500	—	—	—	Rear	Evaporator Core
2003	GMC	Savana 3500	—	—	—	Rear	Evaporator Core
2002	Chevrolet	Express 1500	—	—	—	Rear	Evaporator Core
2002	Chevrolet	Express 2500	—	—	—	Rear	Evaporator Core
2002	Chevrolet	Express 3500	—	—	—	Rear	Evaporator Core
2002	Chevrolet	G30	—	—	—	Rear	Evaporator Core
2002	GMC	Savana 1500	—	—	—	Rear	Evaporator Core
2002	GMC	Savana 2500	—	—	—	Rear	Evaporator Core
2002	GMC	Savana 3500	—	—	—	Rear	Evaporator Core
2001	Chevrolet	Express 1500	—	—	—	Rear	Evaporator Core
2001	Chevrolet	Express 2500	—	—	—	Rear	Evaporator Core
2001	Chevrolet	Express 3500	—	—	—	Rear	Evaporator Core
2001	Chevrolet	G30	—	—	—	Rear	Evaporator Core
2001	GMC	Savana 1500	—	—	—	Rear	Evaporator Core
2001	GMC	Savana 2500	—	—	—	Rear	Evaporator Core
2001	GMC	Savana 3500	—	—	—	Rear	Evaporator Core
2000	Chevrolet	Express 1500	—	—	—	Rear	Evaporator Core
2000	Chevrolet	Express 2500	—	—	—	Rear	Evaporator Core
2000	Chevrolet	Express 3500	—	—	—	Rear	Evaporator Core
2000	GMC	Savana 1500	—	—	—	Rear	Evaporator Core
2000	GMC	Savana 2500	—	—	—	Rear	Evaporator Core
2000	GMC	Savana 3500	—	—	—	Rear	Evaporator Core
1999	Chevrolet	Express 1500	—	—	—	Rear	Evaporator Core
1999	Chevrolet	Express 2500	—	—	—	Rear	Evaporator Core
1999	Chevrolet	Express 3500	—	—	—	Rear	Evaporator Core
1999	GMC	Savana 1500	—	—	—	Rear	Evaporator Core
1999	GMC	Savana 2500	—	—	—	Rear	Evaporator Core
1999	GMC	Savana 3500	—	—	—	Rear	Evaporator Core
1998	Chevrolet	Express 1500	—	—	—	Rear	Evaporator Core
1998	Chevrolet	Express 2500	—	—	—	Rear	Evaporator Core
1998	Chevrolet	Express 3500	—	—	—	Rear	Evaporator Core
1998	GMC	Savana 1500	—	—	—	Rear	Evaporator Core
1998	GMC	Savana 2500	—	—	—	Rear	Evaporator Core
1998	GMC	Savana 3500	—	—	—	Rear	Evaporator Core
1997	Chevrolet	Express 1500	—	—	—	Rear	Evaporator Core
1997	Chevrolet	Express 2500	—	—	—	Rear	Evaporator Core
1997	Chevrolet	Express 3500	—	—	—	Rear	Evaporator Core
1997	GMC	Savana 1500	—	—	—	Rear	Evaporator Core
1997	GMC	Savana 2500	—	—	—	Rear	Evaporator Core
1997	GMC	Savana 3500	—	—	—	Rear	Evaporator Core
No rows match your filter.

Directly replaces or cross-references 32 part numbers

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

Four Seasons — 6583NFour Seasons — 54621Global Parts Distributors LLC — 4711442Global Parts Distributors LLC — 4711865Spectra Premium — 1054621UAC — EV6956PFC156883156957156959288379706883720530770137014949301563094156372527332922733338377013711154621524693415248184052481873890190078901934889079007A88379CWK770137EP20088EV6956PFXCEV6957T54621