CSF High-Performance all-aluminum radiator for the FE1 Honda Civic Si and DE4 Acura Integra, developed from the HPD race radiator program. It runs a 2-row 42mm core with CSF's latest 5mm multi-louvered fins, increasing heat transfer area by 20-25% over larger-fin designs, plus exclusive B-Tube cooling tubes for roughly 15% more heat transfer than standard oval tubes. TIG-welded all-aluminum construction with CNC-machined brackets and OEM-style inlet/outlet makes it a true plug-and-play drop-in, and it ships with a 1.4 bar (20psi) CSF radiator cap.
| Type | High-performance all-aluminum radiator |
| Core | 2-row, 42mm, with B-Tube technology |
| Fins | 5mm tall, multi-louvered |
| Material | 100% aluminum, TIG-welded |
| Inlet / Outlet | OEM-style |
| Radiator Cap | 1.4 bar (20psi), CSF logo |
| Finish | Hand-polished mirror finish |
| Fit | Plug-and-play drop-in, no modifications |
| Included | Radiator, CNC-machined mounting brackets, 1.4 bar radiator cap |
| Warranty | 2-year limited warranty |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2023-2025 | Acura | Integra | A-Spec |
| 2023-2025 | Acura | Integra | Base |
| 2023-2024 | Honda | Accord | EX |
| 2023-2025 | Honda | Accord | Hybrid EX-L |
| 2023-2025 | Honda | Accord | Hybrid Sport |
| 2023-2025 | Honda | Accord | Hybrid Sport-L |
| 2023-2025 | Honda | Accord | Hybrid Touring |
| 2023-2025 | Honda | Accord | LX |
| 2025 | Honda | Accord | SE |
| 2022-2024 | Honda | Civic | EX |
| 2022-2023 | Honda | Civic | EX-L |
| 2022-2026 | Honda | Civic | Si |
| 2022-2024 | Honda | Civic | Sport Touring |
| 2022-2024 | Honda | Civic | Touring |
