One Stop Solutions 2778 Radiator

Radiator for Subaru Legacy and Outback

One Stop Solutions Part Number 2778 is an OSC Premium New Automotive Radiator built for OE-style form and function. It is engineered for the 2005-2010 Subaru Legacy and 2005-2009 Subaru Outback, with a downflow design, plastic tanks, and a premium PA core for dependable cooling performance.

This radiator uses cadmium-plated tubes to help resist premature failure, and the unit is individually pressure tested during production. The design includes a transmission oil cooler and factory-style fitment details for a direct replacement on Subaru Legacy and Subaru Outback applications.

Key Features

• Fits 2005-2010 Subaru Legacy and 2005-2009 Subaru Outback
• Part Number 2778 for direct identification
• Downflow radiator design with plastic tanks
• PA core material with one-row construction
• Transmission oil cooler included; engine oil cooler not included
• Cadmium-plated tubes inside and out for added durability
• Die-cut gasket design to help prevent leaks
• Pressure tested during production for quality control
• Factory-style components fitted and torqued to specification

Detailed Description

OSC Premium New Automotive Radiator Part Number 2778 is built to match OE form and function for Subaru Legacy and Subaru Outback cooling system service. The radiator measures 27 1/16 inches wide with a 13 3/8 inch core height and 5/8 inch core thickness, and it uses 1 9/16 inch inlet and outlet diameters. The integrated plated transmission oil cooler supports vehicles originally equipped with this design, while the engine oil cooler is not included.

For buyers searching for a Subaru Legacy radiator 2005-2010 or a Subaru Outback radiator 2005-2009, this unit is engineered for direct replacement fitment and consistent cooling performance. Part Number 2778 is also cross-referenced to Spectra Premium CU2778 for the same application.

Common Problems This Radiator Can Address

• Coolant leaks from a cracked or aging radiator tank
• Reduced cooling efficiency from clogged or deteriorated internal passages
• Transmission fluid temperature concerns in vehicles with an integrated cooler
• Overheating caused by worn radiator cores or damaged fins
• Fitment issues when replacing an original Subaru Legacy or Subaru Outback radiator

Installation Notes and Tips

Verify the inlet and outlet sizes, cooler style, and overall dimensions before installation. This radiator is a downflow unit with a plated transmission cooler, so it should be matched to the original cooling system layout on the vehicle. Inspect hoses, clamps, and mounting points during replacement to help ensure a proper seal and stable installation.

For Subaru Legacy and Subaru Outback cooling system repairs, confirm that the original vehicle uses the same cooler configuration and radiator layout as Part Number 2778 before installation.

Quality Assurance

OSC radiators are produced with premium-grade materials and tested during manufacturing, including pressure testing of the completed assembly. The design also incorporates engineering updates aimed at improving cooling performance and service life in higher-mileage vehicles.