CSF 3645 Radiator
OE Quality 60-Day Returns
CSF
 1 Row Plastic Tank Aluminum Core

CSF 3645 Radiator

Brand CSF 3645
Core Thickness 7/8
Core Width 30 3/8
Core Material Aluminum
Tank Material Plastic
Core Length 16 3/4
Inlet Diameter 1 5/16 left
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 4/16
Box Length (in) 33
Box Weight (lbs) 12
Box Width (in) 22 9/16
Csf Cap Number 4514
Hazardous Material No
Inlet Length (in) 31
Inlet Width (in) 1 5/8
Oil Cooler (in) 14 3/4 (high-efficiency plate type)
Outlet Length (in) 31
Outlet Width (in) 1 5/8
Tech Note O.e.m. style plastic tanks & aluminum core.
Product line 1 Row Plastic Tank Aluminum Core
Fits Acura · 12 vehicles

OE-style construction. Plastic tanks and an aluminum core mirror the original design.

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

High-efficiency oil cooler. Plate-type design adds extra cooling capacity.

Cross-references Carlson 13121, TYC 13179 and 19010-RK1-A52 for the same application. See all 10.

$130.48Free shipping
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Free returns within 60 days if it doesn't fit when fitment is verified.
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OE-Style Cooling for Acura TL

This CSF radiator is built for 2009-2014 Acura TL applications with an OE-style plastic tank and aluminum core design. It is engineered for dependable heat transfer and direct-fit cooling system service, with CSF part number 3645 identified for this vehicle range.

Key Features

  • 1-row radiator design with a down-flow configuration
  • Plastic tank and aluminum core construction
  • Core thickness: 7/8 in.
  • Core width: 30 3/8 in.; core length: 16 3/4 in.
  • Inlet diameter: 1 5/16 in. left; outlet diameter: 1 1/4 in. left
  • Integrated high-efficiency plate-type oil cooler section
  • OE-style plastic tanks and aluminum core construction
  • CSF part number 3645

Product Details

CSF manufactures radiators to high-performance standards and validates cooling performance through laboratory wind-tunnel testing. The brand has supplied radiators worldwide for decades, with a broad catalog covering many vehicle applications. This CSF 3645 radiator follows an OEM-style layout for the Acura TL, using a plastic tank and aluminum core combination that matches the original cooling system architecture.

Compatible With 2009-2014 Acura TL, N/A. This part cross-references Carlson 13121 and TYC 13179 for the same application. The CSF 3645 radiator is a direct replacement choice for Acura TL owners seeking a radiator built around the original down-flow configuration and factory-style inlet and outlet placement.

Common Cooling System Issues Addressed

  • Cracked or leaking radiator tanks
  • Restricted coolant flow from an aging core
  • Overheating caused by reduced heat dissipation
  • Oil cooler section wear in the radiator assembly
  • Corrosion or fatigue in an original radiator

Installation Notes and Tips

Verify inlet and outlet orientation before installation, since this radiator uses left-side inlet and outlet connections. Confirm the vehicle uses the OE-style 16 psi cap specification noted for this application, and compare all mounting points, hose routing, and cooler connections against the original unit before final assembly. Flush the cooling system and inspect hoses, clamps, and the thermostat when replacing the radiator.

Quality Assurance

CSF states that its factories are ISO/TSO certified and that its radiators are engineered and tested for cooling performance validation. Part number 3645 is built to OE-style standards for the 2009-2014 Acura TL platform.

Related reading

This part fits 12 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2014AcuraTL3.5LV6N/AOE Style Design; Use Micro, 16 psi Cap; 1 Row Plastic Tank Aluminum Core
2014AcuraTL3.7LV6N/AOE Style Design; Use Micro, 16 psi Cap; 1 Row Plastic Tank Aluminum Core
2013AcuraTL3.5LV6N/AOE Style Design; Use Micro, 16 psi Cap; 1 Row Plastic Tank Aluminum Core
2013AcuraTL3.7LV6N/AOE Style Design; Use Micro, 16 psi Cap; 1 Row Plastic Tank Aluminum Core
2012AcuraTL3.5LV6N/AOE Style Design; Use Micro, 16 psi Cap; 1 Row Plastic Tank Aluminum Core
2012AcuraTL3.7LV6N/AOE Style Design; Use Micro, 16 psi Cap; 1 Row Plastic Tank Aluminum Core
2011AcuraTL3.5LV6N/AOE Style Design; Use Micro, 16 psi Cap; 1 Row Plastic Tank Aluminum Core
2011AcuraTL3.7LV6N/AOE Style Design; Use Micro, 16 psi Cap; 1 Row Plastic Tank Aluminum Core
2010AcuraTL3.7LV6N/AOE Style Design; Use Micro, 16 psi Cap; 1 Row Plastic Tank Aluminum Core
2010AcuraTL3.5LV6N/AOE Style Design; Use Micro, 16 psi Cap; 1 Row Plastic Tank Aluminum Core
2009AcuraTL3.5LV6N/AOE Style Design; Use Micro, 16 psi Cap; 1 Row Plastic Tank Aluminum Core
2009AcuraTL3.7LV6N/AOE Style Design; Use Micro, 16 psi Cap; 1 Row Plastic Tank Aluminum Core
Directly replaces or cross-references 10 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Carlson — 13121TYC — 1317919010-RK1-A5219010-RK1-A6119010-RK2-A0119010-RK2-A72AC3010147AC3010148CU13121CU13179