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CSF 3843 Radiator
| Brand | CSF 3843 |
|---|---|
| Core Thickness | 2 3/16 |
| Core Width | 27 7/16 |
| Core Material | Aluminum |
| Tank Material | Plastic |
| Core Length | 33 7/16 |
| Inlet Diameter | 2 left |
| Outlet Diameter | 2 1/4 right |
| Down Flow Or Cross Flow Type | Cross flow |
| Radiator Core Row Quantity | 2 |
| Cap Included | No |
| Box Height (in) | 6 5/8 |
| Box Length (in) | 47 |
| Box Weight (lbs) | 37 |
| Box Width (in) | 31 13/16 |
| Hazardous Material | No |
| Inlet Length (in) | 28 7/16 |
| Inlet Width (in) | 2 11/16 |
| Oil Cooler (in) | 11 1/2 right (high-effeciency plate type) |
| Outlet Length (in) | 28 7/16 |
| Outlet Width (in) | 2 11/16 |
| Tech Note | O.e.m. style plastic tanks & aluminum core with quick-connect out |
| Fits | Chevrolet and GMC · 12 vehicles |
OE-style design. Plastic tanks and an aluminum core with quick-connect outlet pipe and oil cooler fittings.
Cross-flow radiator. Engineered for efficient coolant flow through a two-row core.
Aluminum core with plastic tanks for a lightweight, durable construction.
Cross-references Dorman - First Stop 13690, 23208447 and 84224661 for the same application. See all 4.
CSF 3843 Radiator for Heavy-Duty GM Trucks
CSF 3843 is an OE-style radiator built for 2017-2019 Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500 HD, GMC Sierra 2500 HD, and GMC Sierra 3500 HD applications. It uses an aluminum core with plastic tanks and a cross-flow layout to match the factory-style cooling system configuration.
Key Features
- Aluminum core with plastic tanks for OE-style construction
- Cross-flow radiator design with 2-row core
- Core dimensions: 33 7/16 in. length, 27 7/16 in. width, 2 3/16 in. thickness
- Inlet: 2 in. left; outlet: 2 1/4 in. right
- Includes quick-connect outlet pipe and oil cooler fittings
- High-efficiency plate-type oil cooler on the right side, 11 1/2 in.
- No cap included
Detailed Description
CSF part number 3843 is a direct-fit radiator engineered around OEM-style plastic tanks and an aluminum core for late-model heavy-duty GM trucks. The cross-flow configuration, left-side inlet, right-side outlet, and integrated oil cooler fittings align with the factory cooling layout used on 2017-2019 Chevrolet Silverado 2500 HD and 3500 HD, as well as GMC Sierra 2500 HD and 3500 HD models. This radiator cross-references Dorman First Stop 13690 and OE numbers 23208447, 84224661, and GM3010615 for the same application.
What This Radiator Helps Address
- Overheating caused by a leaking or restricted radiator core
- Coolant loss from cracked or aged plastic tanks
- Reduced cooling performance in towing or heavy-load use
- Transmission or engine oil cooling concerns tied to radiator-integrated cooler fittings
- Fitment issues when replacing an OE-style GM truck radiator
Installation Notes and Tips
Verify inlet and outlet orientation before installation: 2 in. left inlet and 2 1/4 in. right outlet. Confirm the vehicle uses the matching cross-flow layout and oil cooler connection style before removal of the original unit. Transfer any reusable components only if required by the vehicle configuration, and inspect hoses, clamps, and cooler lines for wear while the cooling system is open.
Quality Assurance
CSF is known for OE-style cooling components built to match factory fitment requirements. Part number 3843 is made with an aluminum core and plastic tanks to follow the original equipment design used on these Chevrolet Silverado HD and GMC Sierra HD applications.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2019 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | N/A | — |
| 2019 | Chevrolet | Silverado 3500 HD | 6.6L | V8 | N/A | — |
| 2019 | GMC | Sierra 2500 HD | 6.6L | V8 | N/A | — |
| 2019 | GMC | Sierra 3500 HD | 6.6L | V8 | N/A | — |
| 2018 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | N/A | — |
| 2018 | Chevrolet | Silverado 3500 HD | 6.6L | V8 | N/A | — |
| 2018 | GMC | Sierra 2500 HD | 6.6L | V8 | N/A | — |
| 2018 | GMC | Sierra 3500 HD | 6.6L | V8 | N/A | — |
| 2017 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | N/A | — |
| 2017 | Chevrolet | Silverado 3500 HD | 6.6L | V8 | N/A | — |
| 2017 | GMC | Sierra 2500 HD | 6.6L | V8 | N/A | — |
| 2017 | GMC | Sierra 3500 HD | 6.6L | V8 | N/A | — |
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