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One Stop Solutions 2791E Radiator

Brand	One Stop Solutions 2791E
Core Height	34
Core Thickness	1
Core Thickness	26
Core Width	17 1/4
Inlet Header Length	18 1/2
Outlet Header Length	18 1/2
Core Material	Pa
Tank Material	Plastic
Transmission Oil Cooler Included	Yes
Inlet Header Width	3 1/8
Outlet Header Width	3 1/8
Transmission Oil Cooler Type	Plated
Transmission Oil Cooler Distance between Fittings	11 1/2
Engine Oil Cooler Type	Plated
Engine Oil Cooler Number of Plates	5
Core Row Quantity	1
Inlet Diameter	1 5/16
Outlet Diameter	1 9/16
Engine Oil Cooler Included	Yes
Oil Cooler Fittings Distance Apart	11 1/2
Transmission Oil Cooler Plate Quantity	6
Down Flow Or Cross Flow Type	Crossflow
Cap Included	No
Fits	Chevrolet and GMC · 105 vehicles

OE-style replacement. Built to OES form and function for factory-style fit and appearance.

Integrated cooling. Includes engine and transmission oil cooler sections in the radiator assembly.

Pressure tested. Individually tested during production to help support leak resistance.

$179.06Free shipping

In stock · usually ships same day before 1pm CST

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Radiator Overview

This OSC Premium radiator, part number 2791E, is built for direct replacement applications with OES form and function. It is engineered for multi-fit use while maintaining factory-style appearance and fit, making it a practical choice for Chevrolet Express and GMC Savana cooling system service.

Key Features

Premium aluminum radiator construction with plastic tanks
Crossflow design for efficient coolant routing
Integrated engine oil cooler and transmission oil cooler
Cadmium-plated tubes help resist premature failure
Individually pressure tested during production
Die-cut gasket helps reduce leak risk

Detailed Description

Part number 2791E is an OSC Premium radiator designed to match original equipment form and function for a wide range of Chevrolet Express and GMC Savana applications. The core uses a single-row crossflow layout with aluminum cooler sections, while the radiator assembly is built with premium-grade materials and factory-style fitment details. This radiator is intended for economy-version vehicles and supports cooling system service where the original unit uses integrated oil cooling.

The design includes a plated transmission oil cooler and a plated engine oil cooler, along with aluminum cooler materials and plastic tanks. OSC states that the radiator is tested during production and assembled to factory specifications, which helps support consistent fit and sealing. If you are replacing a worn radiator on a Chevrolet Express 2500, Chevrolet Express 3500, or GMC Savana 3500, this unit provides a direct-fit cooling solution with OE-style construction.

What It Is Used For

Replacing a leaking or cracked radiator
Restoring coolant flow after internal clogging
Addressing transmission cooler seepage within the radiator
Correcting overheating caused by reduced heat transfer
Servicing a damaged radiator on high-mileage vans

Installation Notes and Tips

Verify radiator dimensions, cooler connections, and hose sizes before installation. This unit is listed for economy-version fitments only, so confirm the vehicle configuration against the application data before ordering. The radiator includes the necessary fittings or hardware according to the manufacturer, and the OE-style layout supports a straightforward replacement process.

Quality Assurance

OSC describes this radiator as individually pressure tested and built to OES form and function. The design uses cadmium-plated tubes, a die-cut gasket, and factory-spec assembly practices to support leak resistance and long-term service life. Part number 2791E is engineered for consistent cooling performance in the specified Chevrolet Express and GMC Savana applications.

This part fits 105 vehicles

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

Year	Make	Model	Submodel	Liters	Cylinders	Notes
2020	Chevrolet	Express 2500	—	6.0L	V8	Economy Version
2020	Chevrolet	Express 4500	—	6.0L	V8	Economy Version
2020	Chevrolet	Express Cargo	Cargo	4.3L	V6	Economy Version
2020	Chevrolet	Express Pasajeros	—	6.0L	V8	Economy Version
2020	GMC	Savana 2500	—	6.0L	V8	Economy Version
2020	GMC	Savana 3500	—	6.0L	V8	Economy Version
2020	GMC	Savana 4500	—	6.0L	V8	Economy Version
2019	Chevrolet	Express 2500	—	6.0L	V8	Economy Version
2019	Chevrolet	Express 4500	—	6.0L	V8	Economy Version
2019	Chevrolet	Express Pasajeros	—	6.0L	V8	Economy Version
2019	GMC	Savana 2500	—	6.0L	V8	Economy Version
2019	GMC	Savana 3500	—	6.0L	V8	Economy Version
2019	GMC	Savana 4500	—	6.0L	V8	Economy Version
2018	Chevrolet	Express 2500	—	6.0L	V8	Economy Version
2018	Chevrolet	Express 4500	—	6.0L	V8	Economy Version
2018	Chevrolet	Express Cargo	—	4.3L	V6	Economy Version
2018	Chevrolet	Express Pasajeros	—	6.0L	V8	Economy Version
2018	GMC	Savana 2500	—	6.0L	V8	Economy Version
2018	GMC	Savana 3500	—	6.0L	V8	Economy Version
2018	GMC	Savana 4500	—	6.0L	V8	Economy Version
2017	Chevrolet	Express 2500	—	6.0L	V8	Economy Version
2017	Chevrolet	Express 3500	—	6.0L	V8	Economy Version
2017	Chevrolet	Express 4500	—	6.0L	V8	Economy Version
2017	Chevrolet	Express Cargo	LS	6.0L	V8	Economy Version
2017	Chevrolet	Express Pasajeros	—	6.0L	V8	Economy Version
2017	GMC	Savana 2500	—	6.0L	V8	Economy Version
2017	GMC	Savana 3500	—	6.0L	V8	Economy Version
2017	GMC	Savana 4500	—	6.0L	V8	Economy Version
2016	Chevrolet	Express 2500	—	6.0L	V8	Economy Version
2016	Chevrolet	Express 3500	—	6.0L	V8	Economy Version
2016	Chevrolet	Express 4500	—	6.0L	V8	Economy Version
2016	Chevrolet	Express Cargo	LS	6.0L	V8	Economy Version
2016	Chevrolet	Express Pasajeros	—	6.0L	V8	Economy Version
2016	GMC	Savana 2500	—	6.0L	V8	Economy Version
2016	GMC	Savana 3500	—	6.0L	V8	Economy Version
2016	GMC	Savana 4500	—	6.0L	V8	Economy Version
2015	Chevrolet	Express 2500	—	6.0L	V8	Economy Version
2015	Chevrolet	Express 3500	—	6.0L	V8	Economy Version
2015	Chevrolet	Express 4500	—	6.0L	V8	Economy Version
2015	Chevrolet	Express Cargo	—	6.0L	V8	Economy Version
2015	Chevrolet	Express Pasajeros	—	6.0L	V8	Economy Version
2015	GMC	Savana 2500	—	6.0L	V8	Economy Version
2015	GMC	Savana 3500	—	6.0L	V8	Economy Version
2015	GMC	Savana 4500	—	6.0L	V8	Economy Version
2014	Chevrolet	Express 2500	—	6.0L	V8	Economy Version
2014	Chevrolet	Express 3500	—	6.0L	V8	Economy Version
2014	Chevrolet	Express 4500	—	6.0L	V8	Economy Version
2014	Chevrolet	Express Cargo	—	6.0L	V8	Economy Version
2014	GMC	Savana 2500	—	6.0L	V8	Economy Version
2014	GMC	Savana 3500	—	6.0L	V8	Economy Version
2014	GMC	Savana 4500	—	6.0L	V8	Economy Version
2013	Chevrolet	Express 2500	—	6.0L	V8	Economy Version
2013	Chevrolet	Express 3500	—	6.0L	V8	Economy Version
2013	Chevrolet	Express 4500	—	6.0L	V8	Economy Version
2013	Chevrolet	Express Cargo	—	6.0L	V8	Economy Version
2013	Chevrolet	Express Pasajeros	—	6.0L	V8	Economy Version
2013	GMC	Savana 2500	—	6.0L	V8	Economy Version
2013	GMC	Savana 3500	—	6.0L	V8	Economy Version
2013	GMC	Savana 4500	—	6.0L	V8	Economy Version
2012	Chevrolet	Express 2500	—	6.0L	V8	Economy Version
2012	Chevrolet	Express 3500	—	6.0L	V8	Economy Version
2012	Chevrolet	Express 4500	—	6.0L	V8	Economy Version
2012	Chevrolet	Express Cargo	—	6.0L	V8	Economy Version
2012	Chevrolet	Express Pasajeros	—	6.0L	V8	Economy Version
2012	GMC	Savana 2500	—	6.0L	V8	Economy Version
2012	GMC	Savana 3500	—	6.0L	V8	Economy Version
2012	GMC	Savana 4500	—	6.0L	V8	Economy Version
2011	Chevrolet	Express 2500	—	6.0L	V8	Economy Version
2011	Chevrolet	Express 3500	—	6.0L	V8	Economy Version
2011	Chevrolet	Express 4500	—	6.0L	V8	Economy Version
2011	Chevrolet	Express Cargo	—	6.0L	V8	Economy Version
2011	Chevrolet	Express Pasajeros	—	6.0L	V8	Economy Version
2011	GMC	Savana 2500	—	6.0L	V8	Economy Version
2011	GMC	Savana 3500	—	6.0L	V8	Economy Version
2011	GMC	Savana 4500	—	6.0L	V8	Economy Version
2010	Chevrolet	Express 2500	—	6.0L	V8	Economy Version
2010	Chevrolet	Express 3500	—	6.0L	V8	Economy Version
2010	Chevrolet	Express 4500	—	6.0L	V8	Economy Version
2010	Chevrolet	Express Cargo	—	6.0L	V8	Economy Version
2010	Chevrolet	Express Pasajeros	—	6.0L	V8	Economy Version
2010	GMC	Savana 2500	—	6.0L	V8	Economy Version
2010	GMC	Savana 3500	—	6.0L	V8	Economy Version
2010	GMC	Savana 4500	—	6.0L	V8	Economy Version
2009	Chevrolet	Express 2500	—	6.0L	V8	Economy Version
2009	Chevrolet	Express 3500	—	6.0L	V8	Economy Version
2009	Chevrolet	Express 4500	—	6.0L	V8	Economy Version
2009	GMC	Savana 2500	—	6.0L	V8	Economy Version
2009	GMC	Savana 3500	—	6.0L	V8	Economy Version
2009	GMC	Savana 4500	—	6.0L	V8	Economy Version
2008	Chevrolet	Express 2500	—	6.0L	V8	Economy Version
2008	Chevrolet	Express 3500	—	6.0L	V8	Economy Version
2008	GMC	Savana 2500	—	6.0L	V8	Economy Version
2008	GMC	Savana 3500	—	6.0L	V8	Economy Version
2007	Chevrolet	Express 2500	—	6.0L	V8	Economy Version
2007	Chevrolet	Express 3500	—	6.0L	V8	Economy Version
2007	GMC	Savana 2500	—	6.0L	V8	Economy Version
2007	GMC	Savana 3500	—	6.0L	V8	Economy Version
2006	Chevrolet	Express 2500	—	6.0L	V8	Economy Version
2006	Chevrolet	Express 3500	—	6.0L	V8	Economy Version
2006	GMC	Savana 2500	—	6.0L	V8	Economy Version
2006	GMC	Savana 3500	—	6.0L	V8	Economy Version
2005	Chevrolet	Express 2500	—	6.0L	V8	Economy Version
2005	Chevrolet	Express 3500	—	6.0L	V8	Economy Version
2005	GMC	Savana 2500	—	6.0L	V8	Economy Version
2005	GMC	Savana 3500	—	6.0L	V8	Economy Version
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