CSF 3803 Radiator

CSF Radiator 3803 for Subaru Legacy and Outback

The CSF Radiator part number 3803 is designed specifically for Subaru Legacy and Outback models, providing reliable cooling performance. Featuring an aluminum core and plastic tanks, this radiator supports efficient heat dissipation to maintain optimal engine temperature.

• Core thickness: 1 1/4 inches
• Core width: 27 inches
• Core length: 13 3/4 inches
• Aluminum core material with plastic tanks
• Down flow design with a single core row
• Inlet diameter: 1 1/8 inches (two inlets on left side)
• Outlet diameter: 1 9/16 inches (left side)
• Includes high-efficiency plate type oil cooler (14 3/4 inches)
• Cap not included (compatible with CSF cap number 4514)

Detailed Radiator Specifications and Design

This CSF radiator 3803 features an OEM-style design with plastic tanks and an aluminum core, engineered to meet the cooling demands of Subaru Legacy and Outback vehicles. The down flow core layout ensures effective coolant flow through the single-row core, which measures 1 1/4 inches thick, 27 inches wide, and 13 3/4 inches long. The radiator’s inlet and outlet diameters are sized to match factory specifications, with two inlets and one outlet located on the left side for proper fitment and connection.

Additionally, the integrated high-efficiency plate type oil cooler (14 3/4 inches) enhances engine oil cooling, contributing to overall engine temperature management. The radiator does not include a cap but is compatible with CSF cap number 4514, allowing for easy replacement if needed.

Compatible Vehicles and Common Applications

• Subaru Legacy radiator replacement
• Subaru Outback cooling system upgrade
• Resolving overheating issues in Subaru Legacy and Outback
• Replacing damaged or leaking radiator cores
• Improving engine oil cooling performance

Installation Notes and Tips

When installing the CSF radiator 3803, ensure all hose connections match the specified inlet and outlet diameters for a secure fit. The down flow design requires proper orientation to maintain coolant flow direction. Since the radiator does not include a cap, verify compatibility with the CSF cap number 4514 or the original equipment manufacturer’s cap. It is recommended to inspect and replace any worn hoses or clamps during installation to prevent leaks.

Quality Assurance and Warranty Information

CSF radiators are manufactured to meet OEM standards, using durable aluminum cores and plastic tanks designed for longevity and corrosion resistance. This radiator is free of hazardous materials and undergoes quality control testing to ensure reliable performance. Warranty coverage details should be confirmed with the distributor or manufacturer, as they may vary by region.