One Stop Solutions 1839 Radiator

Brand One Stop Solutions 1839
Cap Included NO
Core Height 26 1/2
Core Material PA
Core Row Quantity 1
Core Thickness 16
Core Thickness 5/8
Core Width 14 3/16
Down Flow Or Cross Flow Type CROSSFLOW
Engine Oil Cooler Included NO
Engine Oil Cooler Type NONE
Inlet Diameter 1 1/2
Inlet Header Length 15 1/16
Inlet Header Width 1 7/8
Outlet Diameter 1 1/2
Outlet Header Length 15 1/16
Outlet Header Width 1 7/8
Tank Material PLASTIC
Transmission Oil Cooler Diameter 7/8
Transmission Oil Cooler Distance between Fittings 7 7/8
Transmission Oil Cooler Included YES
Transmission Oil Cooler Type CONCENTRIC
Fits Subaru · 5 vehicles

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

Premium aluminum construction. Cadmium-plated tubes help resist premature failure.

Individually pressure tested. Each radiator is checked for leaks before it ships.

Cross-references APDI 8011839, Koyorad A1839 and Spectra Premium CU1853 for the same application. See all 5.

$115.24Free shipping
In stock · usually ships same day before 1pm CST
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Radiator for Subaru Legacy 1995-1999

Restore cooling performance with this OSC Premium New Automotive Radiator, part number 1839. It is built for the 1995-1999 Subaru Legacy and follows OES form and function for a direct-fit replacement with OE-style dimensions and layout.

  • Fits 1995-1999 Subaru Legacy, N/A
  • Crossflow radiator design with a 1-row equivalent core
  • Premium-grade aluminum construction with plastic tanks
  • Transmission oil cooler included with concentric cooler design
  • Core size: 26 1/2 in. height, 14 3/16 in. width, 5/8 in. thickness
  • Inlet and outlet diameters: 1 1/2 in.
  • Pressure tested during production for leak verification
  • Engineered for multi-fit without changing the look or fit of the original system

Built for OE-Style Cooling Performance

The OSC 1839 radiator is designed around factory-style fitment for Subaru Legacy cooling system service. It uses premium aluminum tubes and fins, cadmium-plated tubes inside and out, and a die-cut gasket to help maintain a secure seal. The radiator also includes a transmission oil cooler and is assembled to factory specifications for fit, torque, and function. This makes it a practical choice for Subaru Legacy radiator replacement work where correct dimensions and cooling capacity matter.

This part cross-references Spectra Premium CU1853 and Koyorad A1839 for the same application.

Common Problems This Radiator Can Address

  • Overheating caused by a worn or leaking radiator
  • Coolant loss from cracked tanks, seams, or gasket failure
  • Reduced cooling efficiency in a high-mileage Subaru Legacy
  • Transmission heat buildup when the cooler circuit is no longer performing properly
  • Fitment issues from non-OE-style replacement radiators

Installation Notes and Tips

Verify core dimensions, inlet and outlet size, and cooler connection layout before installation. This radiator is a crossflow design and is intended for Subaru Legacy applications listed above. Inspect hoses, clamps, and mounting points during replacement to help prevent repeat leaks or cooling-system contamination.

Quality Assurance

OSC tests the radiator core before assembly, then tests the completed unit again after assembly. The transmission and engine oil coolers are also tested prior to installation into the tank. The design includes enhancements aimed at improving durability and service life in higher-mileage vehicles.

This part fits 5 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelTransmissionLitersCylindersPositionNotes
1999SubaruLegacy—2.2LH4N/A1-row equivalent radiator.
1998SubaruLegacy—2.2LH4N/A1-row equivalent radiator.
1997SubaruLegacyAutomatic2.2LH4N/A1-row equivalent radiator.
1996SubaruLegacyAutomatic2.2LH4N/A1-row equivalent radiator.
1995SubaruLegacyAutomatic2.2LH4N/A1-row equivalent radiator.
Directly replaces or cross-references 5 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
APDI — 8011839Koyorad — A1839Spectra Premium — CU185345199AC04053783