CSF
1 Row Plastic Tank Aluminum Core

CSF 2809 Radiator

Brand CSF 2809
Core Thickness 5/8
Core Width 25 1/2
Core Material Aluminum
Tank Material Plastic
Core Length 12 1/2
Inlet Diameter 1 1/4 right
Outlet Diameter 1 1/4 left
Down Flow Or Cross Flow Type Down flow
Radiator Core Row Quantity 1
Cap Included No
Box Height (in) 5 11/16
Box Length (in) 28 1/16
Box Weight (lbs) 8
Box Width (in) 19 5/8
Csf Cap Number 4503
Hazardous Material No
Inlet Length (in) 26 1/16
Inlet Width (in) 1 9/16
Oil Cooler (in) 10 13/16 (high-effeciency concentric type)
Outlet Length (in) 26 1/16
Outlet Width (in) 1 9/16
Tech Note O.e.m. style plastic tanks & aluminum core.
Product line 1 Row Plastic Tank Aluminum Core
Fits Mazda · 7 vehicles

OEM-style construction. Plastic tanks and an aluminum core deliver a familiar radiator design.

Down-flow design. Promotes efficient coolant movement through the radiator core.

Wind tunnel tested. Validated for cooling performance in lab testing.

Cross-references Anchor 2268, CSF 2277 and DENSO Auto Parts 221-3503 for the same application. See all 12.

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CSF 2809 Radiator for Mazda Miata

CSF 2809 is an OE-style radiator built with a plastic tank and aluminum core for the 1999-2005 Mazda Miata. It is engineered for direct replacement service on Miata cooling systems that use a down-flow layout and 1 1/4-inch inlet and outlet connections.

The CSF radiator line is built around factory-style fitment and validated cooling performance. This CSF 2809 radiator reflects that approach with a 1-row aluminum core, plastic tanks, and dimensions matched to the listed application for the Mazda Miata.

Key Features

  • Fits 1999-2005 Mazda Miata, N/A
  • OE-style plastic tank and aluminum core construction
  • 1-row down-flow design
  • Core thickness: 5/8 in.
  • Core dimensions: 25 1/2 in. wide x 12 1/2 in. long
  • Inlet diameter: 1 1/4 in. right
  • Outlet diameter: 1 1/4 in. left
  • High-efficiency concentric-type oil cooler section
  • Cap not included; CSF cap number 4503

Detailed Description

CSF 2809 is a replacement radiator for the 1999-2005 Mazda Miata, designed to match the OE-style plastic tank and aluminum core layout used in the original cooling system. The down-flow configuration, 1-row core, and listed inlet and outlet sizes support a straightforward radiator replacement for Miata owners servicing a worn, leaking, or inefficient cooling assembly. This part number, 2809, is also cross-referenced with Spectra Premium CU2268 for the same application.

CSF manufactures a wide range of radiator models and uses lab-based cooling validation methods, including wind tunnel testing, to verify performance characteristics. For buyers searching for a Mazda Miata radiator replacement, CSF 2809 offers the correct style and dimensions for the specified 1999-2005 fitment.

Common Problems This Radiator Can Address

  • Coolant leaks from aging plastic tanks or core seams
  • Restricted cooling performance from a clogged or corroded radiator
  • Overheating caused by reduced heat transfer efficiency
  • Cracked or damaged radiator connections at the inlet or outlet
  • Replacement needs after impact or long-term wear

Installation Notes and Tips

Verify the radiator dimensions, inlet and outlet orientation, and down-flow layout before installation. Confirm that your vehicle uses the listed 1999-2005 Mazda Miata application and compare the existing radiator to the OE-style plastic tank and aluminum core design. The radiator cap is not included, and the listed CSF cap number is 4503 if a matching cap is needed.

Quality Assurance

CSF states that its factories are ISO/TSO certified and that its radiators are engineered to high-performance standards. The brand also notes long-term global production experience and cooling-performance validation during development.

This part fits 7 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2005MazdaMiata1.8LL4N/AOE style design with Mini 16 psi cap.; 1 Row Plastic Tank Aluminum Core
2004MazdaMiata1.8LL4N/AOE style design with Mini 16 psi cap.; 1 Row Plastic Tank Aluminum Core
2003MazdaMiata1.8LL4N/AOE style design with Mini 16 psi cap.; 1 Row Plastic Tank Aluminum Core
2002MazdaMiata1.8LL4N/AOE style design with Mini 16 psi cap.; 1 Row Plastic Tank Aluminum Core
2001MazdaMiata1.8LL4N/AOE style design with Mini 16 psi cap.; 1 Row Plastic Tank Aluminum Core
2000MazdaMiata1.8LL4N/AOE style design with Mini 16 psi cap.; 1 Row Plastic Tank Aluminum Core
1999MazdaMiata1.8LL4N/AOE style design with Mini 16 psi cap.; 1 Row Plastic Tank Aluminum Core
Directly replaces or cross-references 12 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Anchor — 2268CSF — 2277DENSO Auto Parts — 221-3503DENSO Auto Parts — 221-3505Spectra Premium — CU22688012268BP4W - 15 - 200 ABP4X - 15 - 200 ABP6H - 15 - 200MA3010101MA3010102MA3010103