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CSF 2603 Radiator
| Brand | CSF 2603 |
|---|---|
| Box Height (in) | 5 4/16 |
| Box Length (in) | 29 7/16 |
| Box Weight (lbs) | 12 |
| Box Width (in) | 23 1/8 |
| Cap Included | No |
| Core Length | 16 3/4 |
| Core Material | Aluminum |
| Core Thickness | 7/8 |
| Core Width | 26 11/16 |
| Csf Cap Number | 4514 |
| Down Flow Or Cross Flow Type | Down Flow |
| Hazardous Material | No |
| Inlet Diameter | 1 1/4 Centre |
| Inlet Length (in) | 27 1/4 |
| Inlet Width (in) | 1 5/8 |
| Oil Cooler (in) | 12 13/16 (high-effeciency Concentric Type) |
| Outlet Diameter | 1 1/4 Right |
| Outlet Length (in) | 27 1/4 |
| Outlet Width (in) | 1 5/8 |
| Radiator Core Row Quantity | 1 |
| Tank Material | Plastic |
| Tech Note | O.E.M. style Plastic tanks & Aluminum core. |
| Product line | 1 Row Plastic Tank Aluminum Core |
| Fits | Isuzu and Honda · 8 vehicles |
OE-style construction. Plastic tanks and an aluminum core mirror the original design.
Wind tunnel tested. Validated for cooling performance in lab testing.
1-row design. A single-row radiator for efficient heat transfer.
Cross-references DENSO Auto Parts 221-3203, FEL-PRO 1815 and Spectra Premium CU1815 for the same application. See all 10.
OE-Style Radiator for Honda and Isuzu
The CSF 2603 radiator is an OE-style cooling replacement built with a plastic tank and aluminum core design. It is engineered for direct-fit service on select Honda Odyssey and Isuzu Oasis applications, with dimensions and hose connections matched to the original layout.
CSF’s 1 Row Plastic Tank Aluminum Core line focuses on practical replacement fitment and validated cooling performance. This radiator follows that product line approach with a down-flow configuration, 1-row core construction, and OEM-style tank materials for a straightforward service part.
Key Features
- Part number: CSF 2603
- OE-style plastic tank and aluminum core construction
- Down-flow radiator design
- 1-row core layout
- Core thickness: 7/8 in.
- Core width: 26 11/16 in.; core length: 16 3/4 in.
- Inlet diameter: 1 1/4 center
- Outlet diameter: 1 1/4 right
- Oil cooler: 12 13/16 in. high-efficiency concentric type
- Cap not included
Detailed Description
The CSF 2603 radiator is built for vehicles that use an OE-style cooling system with plastic end tanks and an aluminum core. Its down-flow layout, single-row core, and factory-style inlet and outlet placement support direct replacement service on 1995-1998 Honda Odyssey and 1996-1999 Isuzu Oasis models. The radiator is designed around the original cooling package dimensions, including the integrated oil cooler section and hose connection sizing.
This part cross-references DENSO Auto Parts 221-3203 for the same application. The CSF 2603 is also identified by interchange references including Spectra Premium CU1815.
Vehicle Fitment
- Fits 1996-1999 Isuzu Oasis, N/A; OE Style Design; Use Micro, 16 psi Cap; 1 Row Plastic Tank Aluminum Core
- Fits 1995-1998 Honda Odyssey, N/A; OE Style Design; Use Micro, 16 psi Cap; 1 Row Plastic Tank Aluminum Core
Common Cooling System Issues
- Cracked or leaking radiator tanks
- Restricted coolant flow from an aging core
- Overheating caused by reduced heat transfer
- Damaged hose connections or worn radiator fittings
- Cooling system service needs on OE-style replacement applications
Installation Notes
Verify radiator dimensions, inlet and outlet placement, and transmission or oil cooler routing before installation. This radiator does not include a cap; use the specified 16 psi micro cap noted in the fitment details when required by the vehicle application. Confirm all hose connections are clean and inspect the cooling system for contamination before filling and bleeding.
Quality Assurance
CSF states that its factories are ISO/TSO certified and that its radiators are engineered and wind-tunnel tested for cooling performance validation. The brand has supplied radiators worldwide for more than 50 years across a broad range of vehicle applications.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1999 | Isuzu | Oasis | 2.3L | L4 | N/A | OE Style Design; Use Micro, 16 psi Cap; 1 Row Plastic Tank Aluminum Core |
| 1998 | Honda | Odyssey | 2.3L | L4 | N/A | OE Style Design; Use Micro, 16 psi Cap; 1 Row Plastic Tank Aluminum Core |
| 1998 | Isuzu | Oasis | 2.3L | L4 | N/A | OE Style Design; Use Micro, 16 psi Cap; 1 Row Plastic Tank Aluminum Core |
| 1997 | Honda | Odyssey | 2.2L | L4 | N/A | OE Style Design; Use Micro, 16 psi Cap; 1 Row Plastic Tank Aluminum Core |
| 1997 | Isuzu | Oasis | 2.2L | L4 | N/A | OE Style Design; Use Micro, 16 psi Cap; 1 Row Plastic Tank Aluminum Core |
| 1996 | Honda | Odyssey | 2.2L | L4 | N/A | OE Style Design; Use Micro, 16 psi Cap; 1 Row Plastic Tank Aluminum Core |
| 1996 | Isuzu | Oasis | 2.2L | L4 | N/A | OE Style Design; Use Micro, 16 psi Cap; 1 Row Plastic Tank Aluminum Core |
| 1995 | Honda | Odyssey | 2.2L | L4 | N/A | OE Style Design; Use Micro, 16 psi Cap; 1 Row Plastic Tank Aluminum Core |
| No rows match your filter. | ||||||