One Stop Solutions 2301 Radiator

Brand One Stop Solutions 2301
Cap Included NO
Core Height 14 3/4
Core Material PA
Core Row Quantity 1
Core Thickness 16
Core Thickness 5/8
Core Width 28 1/4
Down Flow Or Cross Flow Type DOWNFLOW
Engine Oil Cooler Included NO
Engine Oil Cooler Type NONE
Inlet Diameter 1 3/8
Inlet Header Length 29 1/8
Inlet Header Width 2
Outlet Diameter 1 3/8
Outlet Header Length 29 1/8
Outlet Header Width 2
Tank Material PLASTIC
Transmission Oil Cooler Diameter 7/8
Transmission Oil Cooler Distance between Fittings 14 3/4
Transmission Oil Cooler Included YES
Transmission Oil Cooler Type CONCENTRIC
Fits Mitsubishi · 4 vehicles

O.E. form and function. Engineered for a drop-in fit with hassle-free installation.

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

Individually pressure tested. Each radiator is checked during production for leak-free performance.

Cross-references Dorman - HELP 56078, Koyorad A2301 and Spectra Premium CU2301 for the same application. See all 6.

$139.19Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
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Step 2 — Quantity
Order total $139.19
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Free returns within 60 days if it doesn't fit when fitment is verified.

OE-Style Radiator for Mitsubishi Galant

This OSC Premium radiator is built for 1999-2002 Mitsubishi Galant applications with a downflow design and integrated concentric transmission oil cooler. Part number 2301 is engineered around OES form and function, with premium aluminum construction and plastic tanks for a direct replacement fit.

Key Features

  • Fits 1999-2002 Mitsubishi Galant
  • Downflow radiator design with 1-row core
  • Core dimensions: 28 1/4 in. wide, 14 3/4 in. high, 5/8 in. thick
  • 1 3/8 in. inlet and outlet diameters
  • Concentric transmission oil cooler included
  • Premium-grade aluminum core with plastic tanks
  • Die-cut gasket design for leak resistance
  • Pressure tested during production for quality control

Detailed Description

OSC part number 2301 is a replacement radiator for the Mitsubishi Galant that follows OE-style form, fit, and function. It uses premium aluminum construction with cadmium-plated tubes inside and out to help resist premature failure, while the plastic tank design matches the original cooling system layout. The radiator includes a concentric transmission oil cooler and is built with factory-style fittings and hardware points for a clean installation. For drivers searching for a 1999 Mitsubishi Galant radiator, 2000-2002 Mitsubishi Galant radiator, or an OE replacement radiator for Mitsubishi Galant cooling repair, this unit is built to match the original application.

This part cross-references Spectra Premium CU2301 for the same application.

Common Problems This Radiator Can Address

  • Coolant leaks from a cracked or aging radiator
  • Overheating caused by restricted or damaged cooling passages
  • Transmission fluid temperature issues related to a failing cooler circuit
  • Reduced cooling performance from worn core fins or internal corrosion
  • Fitment issues after replacing a damaged original radiator

Installation Notes and Tips

Verify inlet and outlet hose sizes, cooler line routing, and overall core dimensions before installation. Inspect the mounting points, fan shroud alignment, and hose condition during replacement to help ensure a proper seal and stable fit. Because this radiator is built for direct replacement use, it is suited to standard cooling-system service on the Mitsubishi Galant.

Quality Assurance

OSC tests the radiator core before assembly and tests the completed unit again after assembly. The transmission and engine oil cooler circuits are also checked prior to installation into the tank. This production process supports consistent fitment and leak control for part number 2301.

This part fits 4 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2002MitsubishiGalant3.0LV6N/A—
2001MitsubishiGalant3.0LV6N/A—
2000MitsubishiGalant3.0LV6N/A—
1999MitsubishiGalant3.0LV6N/A—
Directly replaces or cross-references 6 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Dorman - HELP — 56078Koyorad — A2301Spectra Premium — CU23018012301MI3010121MR385757