CSF 3076O Aluminum Radiator w/ Oil Cooler for 02-07 WRX/STI

Vehicle Fitment

• 2002-2007 Subaru Impreza WRX (GD/GG chassis)
• 2004-2007 Subaru Impreza WRX STI (GD/GG chassis)

Fitment Notes

• Direct fit with OEM brackets, fittings, A/C condenser, hoses, and fan shrouds - only minor trimming needed at fitting locations
• 2006-2007 WRX has tighter clearance due to a different factory oil cooler/exhaust manifold combination

Features

• 2-row core with CSF's exclusive B-Tube design for stronger, more efficient cooling tubes
• B-Tube shape increases heat transfer surface area by approximately 15% over standard tubes
• Dual liquid laminar flow for more efficient heat rejection
• Multi-louvered fins precisely aligned to maximize airflow through the core
• Built-in liquid-to-oil cooler in the bottom end tank, regulated by the cooling system thermostat
• Lab-tested to reject heat faster than a 10-row air-to-oil cooler
• Includes sandwich plate and forged right-angle -10 fittings
• Hand-polished mirror finish for a show-quality appearance

Specifications

• Material: Aluminum
• Core configuration: 2-row, B-Tube design
• Dimensions: 27.75" W x 13.375" H x 2.375" D
• Inlet: Top center
• Outlet: Driver side
• Finish: Polished
• Oil cooler: Integrated, liquid-to-oil, thermostat-regulated

Included Components

• 1x Aluminum radiator with built-in oil cooler and filler neck
• 1x Sandwich plate
• Forged right-angle -10 fittings

Product Description

The CSF 3076O is a high-performance aluminum radiator built specifically for the 2002-2007 WRX and STI, combining a 2-row B-Tube core with a built-in liquid-to-oil cooler in the lower end tank. The B-Tube design increases heat transfer surface area by roughly 15% over conventional tubes while using thinner, lighter aluminum - giving both better cooling efficiency and a stronger overall structure.

Because oil temperature is regulated through the vehicle's coolant thermostat, this integrated design rejects heat faster than a typical 10-row air-to-oil cooler, according to CSF's in-house lab testing. It's a direct fit using OEM brackets, hoses, A/C condenser, and fan shrouds, with only minor trimming needed at some fitting points, and it's finished with a hand-polished mirror finish for a show-quality look that matches its performance.