One Stop Solutions 13257 Radiator

Brand One Stop Solutions 13257
Core Height 14 3/4
Core Thickness 16
Core Thickness 5/8
Core Width 26 5/16
Inlet Header Length 27 5/8
Outlet Header Length 27 5/8
Core Material Pa
Tank Material Plastic
Transmission Oil Cooler Included Yes
Inlet Header Width 1 7/16
Outlet Header Width 2
Transmission Oil Cooler Type Concentric
Transmission Oil Cooler Diameter 3/4
Transmission Oil Cooler Distance between Fittings 12 13/16
Engine Oil Cooler Type None
Core Row Quantity 1
Inlet Diameter 1 1/4
Outlet Diameter 1 1/4
Engine Oil Cooler Included No
Down Flow Or Cross Flow Type Downflow
Cap Included Yes
Cap Included W/cap - 1.1
Fits Acura and Honda · 10 vehicles

O.E. form and function. Engineered as a direct-fit radiator with hassle-free installation.

Premium aluminum construction. Built with cadmium-plated tubes to help resist premature failure.

Pressure tested. Each unit is individually tested for leak-free performance.

Cross-references APDI 8013257, Koyorad A13257 and Spectra Premium CU13257 for the same application. See all 4.

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Radiator for Honda Civic and Acura ILX

One Stop Solutions Part Number 13257 is an OSC Premium New Automotive Radiator built to OE-style form and function for select Honda Civic and Acura ILX applications. It uses premium-grade aluminum construction with plastic tanks, a downflow design, and an integrated concentric transmission oil cooler for direct replacement service.

Fits 2012-2015 Honda Civic, N/A; Fits 2013 Acura ILX, N/A; Fits 2012 Honda Civic, N/A. This radiator is also referenced by part number 13257 for ordering and application matching.

Key Features

  • OE-style radiator design for factory-like fit and cooling performance
  • Premium-grade aluminum core construction with plastic tanks
  • Downflow configuration with one-row core design
  • Integrated concentric transmission oil cooler
  • Cap included
  • Die-cut gasket design for leak resistance
  • Individually pressure tested during production
  • Factory-spec fitted and torqued components

Detailed Description

OSC Part Number 13257 is engineered as a direct radiator replacement for 2012-2015 Honda Civic and 2013 Acura ILX applications listed above. The radiator measures 26 5/16 inches wide with a 14 3/4 inch core height and 5/8 inch core thickness, and it uses 1 1/4 inch inlet and outlet diameters. The unit includes a concentric transmission oil cooler, while engine oil cooling is not included. OSC uses premium tubes, fins, headers, tanks, and related components to improve durability and maintain OE performance characteristics.

The design also addresses common failure points found in higher-mileage cooling systems by increasing fin density, using a thicker core, and incorporating a larger transmission cooler where equipped. For buyers searching for a Honda Civic radiator replacement or an Acura ILX radiator with transmission cooler, Part Number 13257 provides a direct-fit solution built around the original cooling layout.

This part cross-references APDI 8013257 and Spectra Premium CU13257 for the same application.

Common Problems This Radiator Can Address

  • Coolant leaks from a damaged or aging radiator tank or core
  • Overheating caused by restricted cooling capacity or internal wear
  • Transmission fluid temperature concerns in vehicles with an integrated cooler
  • Cooling system failure from cracked plastic tanks or weakened seals
  • Reduced heat rejection in high-mileage Honda Civic and Acura ILX applications

Installation Notes and Tips

Verify radiator dimensions, inlet and outlet placement, and transmission cooler connection style before installation. This radiator is designed for direct replacement service, but the cooling system should be inspected for hose condition, mounting points, and contamination before the new unit is installed. Follow factory service procedures for coolant refill, bleeding, and leak checks after installation.

Quality Assurance

OSC tests the transmission and engine oil coolers before assembly, checks the radiator core prior to assembly, and tests the completed unit again after assembly. The radiator is individually pressure tested, and the design uses OE-style engineering details to support consistent fit and sealing.

This part fits 10 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelTransmissionLitersCylindersNotes
2015HondaCivicAutomatic1.8LL4JAPAN BUILT; DENSO
2015HondaCivicManual1.8LL4JAPAN; TOYO
2014HondaCivicAutomatic1.8LL4JAPAN BUILT; DENSO
2014HondaCivicManual1.8LL4JAPAN; TOYO
2013AcuraILX—1.5LL4CAP INCLUDED
2013HondaCivicAutomatic1.8LL4JAPAN BUILT; DENSO
2013HondaCivicManual1.8LL4JAPAN; TOYO
2012HondaCivicAutomatic1.8LL4JAPAN BUILT; DENSO
2012HondaCivicManual1.8LL4JAPAN; TOYO
2012HondaCivic—1.5LL4CAP INCLUDED
Directly replaces or cross-references 4 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
APDI — 8013257Koyorad — A13257Spectra Premium — CU1325719010RW0A51