CSF 3802 Radiator
OE Quality 60-Day Returns
CSF

CSF 3802 Radiator

Brand CSF 3802
Box Height (in) 4 11/16
Box Length (in) 30 1/16
Box Weight (lbs) 8
Box Width (in) 21 3/8
Cap Included No
Core Length 13 3/4
Core Material Aluminum
Core Thickness 5/8
Core Width 27
Csf Cap Number 4514
Down Flow Or Cross Flow Type Down Flow
Hazardous Material No
Inlet Diameter 1 9/16 Left
Inlet Length (in) 27 15/16
Inlet Width (in) 1 9/16
Outlet Diameter 1 9/16 Left
Outlet Length (in) 27 15/16
Outlet Width (in) 1 9/16
Radiator Core Row Quantity 1
Tank Material Plastic
Tech Note O.E.M. style Plastic tanks & Aluminum core.
Fits Subaru · 10 vehicles

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

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

Down-flow radiator with a single-row core for efficient heat transfer.

Cross-references Bosch 13461, Partslink Numbering System SU3010662 and Spectra Premium CU13461 for the same application. See all 5.

$82.75Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
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Step 2 — Quantity
Order total $82.75
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
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OE-Style Cooling for Subaru Legacy and Outback

CSF radiator Part Number 3802 is built for 2015-2019 Subaru Legacy and 2015-2019 Subaru Outback applications. It uses an OE-style plastic tank and aluminum core design to match factory-style cooling system layout while supporting consistent heat transfer.

Key Features

  • Fits 2015-2019 Subaru Legacy, N/A
  • Fits 2015-2019 Subaru Outback, N/A
  • OE-style plastic tanks with aluminum core construction
  • Down-flow radiator design
  • Single-row core configuration
  • Core thickness: 5/8 in.
  • Core width: 27 in.; core length: 13 3/4 in.
  • Inlet and outlet diameter: 1 9/16 in., left side

Detailed Description

CSF Part Number 3802 is a direct-fit radiator engineered for Subaru Legacy and Subaru Outback models from 2015 through 2019. The radiator features a plastic tank and aluminum core construction, a down-flow layout, and OE-style dimensions that support factory-style fitment and cooling performance. CSF states its radiators are engineered and wind-tunnel tested for cooling validation, and the brand has produced radiators for a wide range of vehicle applications for decades. This part cross-references Spectra Premium CU13461 for the same application.

Common Cooling System Issues It Can Address

  • Coolant leaks from aging radiator tanks or seams
  • Restricted heat dissipation from a worn or clogged core
  • Overheating caused by reduced radiator efficiency
  • Fitment problems when replacing a damaged OE-style radiator
  • Cooling performance loss after impact or corrosion damage

Installation Notes and Tips

Verify inlet and outlet orientation before installation, since this radiator uses left-side inlet and outlet connections. Confirm core dimensions and mounting layout against the original unit on your Subaru Legacy or Subaru Outback before removal. Inspect hoses, clamps, and coolant condition during replacement to help restore proper system operation.

Quality Assurance

CSF manufactures radiators to high-performance standards and uses engineering validation methods to support cooling consistency. The brand’s manufacturing background includes ISO/TSO-certified factories and long-term global production experience.

Related reading

This part fits 10 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2019SubaruLegacy2.5LH4N/AOE style design ensures optimal fitment and performance.
2019SubaruOutback2.5LH4N/AOE style design ensures optimal fitment and performance.
2018SubaruLegacy2.5LH4N/AOE style design ensures optimal fitment and performance.
2018SubaruOutback2.5LH4N/AOE style design ensures optimal fitment and performance.
2017SubaruLegacy2.5LH4N/AOE style design ensures optimal fitment and performance.
2017SubaruOutback2.5LH4N/AOE style design ensures optimal fitment and performance.
2016SubaruLegacy2.5LH4N/AOE style design ensures optimal fitment and performance.
2016SubaruOutback2.5LH4N/AOE style design ensures optimal fitment and performance.
2015SubaruLegacy2.5LH4N/AOE style design ensures optimal fitment and performance.
2015SubaruOutback2.5LH4N/AOE style design ensures optimal fitment and performance.
Directly replaces or cross-references 5 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Bosch — 13461Partslink Numbering System — SU3010662Spectra Premium — CU1346145111AL03A45111AL04A