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CSF 3963 Radiator
| Brand | CSF 3963 |
|---|---|
| Core Thickness | 1 3/16 |
| Core Width | 29 11/16 |
| Core Material | Aluminum |
| Tank Material | Plastic |
| Core Length | 16 3/4 |
| Inlet Diameter | 1 1/4 left |
| Outlet Diameter | 1 1/4 left |
| Down Flow Or Cross Flow Type | Down flow |
| Box Height (in) | 5 11/16 |
| Box Length (in) | 32 1/4 |
| Box Weight (lbs) | 11 |
| Box Width (in) | 22 9/16 |
| Hazardous Material | No |
| Inlet Length (in) | 30 3/16 |
| Inlet Width (in) | 1 5/8 |
| No. Of Rows | 1 |
| Oil Cooler (in) | No |
| Outlet Length (in) | 30 3/16 |
| Outlet Width (in) | 1 5/8 |
| Radiator Cap Supplied | No |
| Tech Note | O.e.m. style plastic tank & aluminum core. upgraded heavy duty co |
| Fits | Honda · 4 vehicles |
Heavy-duty core. 11% thicker than OEM for improved cooling capacity.
Aluminum core. Lightweight construction helps shed heat efficiently.
Wind tunnel tested. Validated in lab for cooling performance.
Cross-references BBB Industries 13946, 19010-68A-A01 and HO3010258 for the same application. See all 3.
CSF 3963 Radiator for Honda CR-V
The CSF 3963 is an OE-style radiator built with an aluminum core and plastic tanks for the 2023-2026 Honda CR-V. It features an upgraded heavy-duty core that is 11% thicker than the OEM 27mm design, helping support cooling performance in a direct-fit replacement format.
Key Features
- Fits 2023-2026 Honda CR-V, N/A
- OE-style plastic tank and aluminum core construction
- Upgraded heavy-duty core: 30mm thickness versus OEM 27mm
- Down-flow radiator design
- Single-row core layout
- Inlet and outlet diameter: 1 1/4 in. left
- Core dimensions: 29 11/16 in. wide x 16 3/4 in. long x 1 3/16 in. thick
- CSF part number 3963
Product Details
CSF part number 3963 is engineered for the 2023-2026 Honda CR-V and built to match the OE-style radiator layout with plastic tanks and an aluminum core. CSF manufactures radiators to high-performance standards and validates cooling performance through laboratory wind-tunnel testing. This radiator uses a thicker 30mm heavy-duty core, which is 11% thicker than the OEM 27mm specification, while maintaining the factory-style down-flow configuration.
This part cross-references BBB Industries 13946 for the same application.
Common Cooling Issues Addressed
- Cracked or leaking radiator tanks
- Restricted coolant flow from an aging core
- Cooling system wear on high-mileage Honda CR-V models
- Replacement needs after corrosion or physical damage
- Restoring factory-style cooling system fitment
Installation Notes and Tips
Verify inlet and outlet orientation before installation, as this radiator uses left-side 1 1/4 in. connections. Confirm all hose, mount, and fan-shroud interfaces against the original unit before final assembly. Radiator cap is not supplied.
Quality Assurance
CSF radiators are manufactured in ISO/TSO-certified facilities and are engineered for cooling performance validation. The brand has supplied radiators worldwide for more than 50 years and has produced over 30 million units across more than 10,000 models.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2026 | Honda | CR-V | 1.5L | L4 | N/A | Upgraded Heavy Duty Core. 11% Thicker 30mm vs OEM 27mm |
| 2025 | Honda | CR-V | 1.5L | L4 | N/A | Upgraded Heavy Duty Core. 11% Thicker 30mm vs OEM 27mm |
| 2024 | Honda | CR-V | 1.5L | L4 | N/A | Upgraded Heavy Duty Core. 11% Thicker 30mm vs OEM 27mm |
| 2023 | Honda | CR-V | 1.5L | L4 | N/A | Upgraded Heavy Duty Core. 11% Thicker 30mm vs OEM 27mm |
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