What makes CSF's B-Tube technology different from standard radiator tubes?

CSF's B-Tube technology uses a specially shaped tube that increases the heat transfer surface area by approximately 15% compared to standard oval tubes. This design allows for a dual liquid laminar flow, which helps dissipate heat more efficiently.

Does this radiator come with everything needed for installation?

This radiator is designed as a direct fit and accepts all attaching OEM components, including quick connect hoses, the AC condenser, mounting brackets, and fan shroud. You will reuse your original hoses and mounting hardware.

What is the advantage of a 2-row, 42mm core design?

A 2-row core with a 42mm thickness, combined with B-Tube technology and efficient fins, allows for greater coolant volume and increased surface area for heat exchange. This results in improved cooling performance over a single-row or thinner core design.

2002-2007 Subaru Impreza Radiator | CSF 3076B

Name: CSF 02-07 Subaru WRX/STI Radiator - Black Finish
Brand: CSF
Price: 375.00 USD
Availability: InStock

CSF 02-07 Subaru WRX/STI Radiator - Black Finish

$375.00

Only 2 left in stock

CSF 02-07 Subaru WRX/STI Radiator - Black Finish. This all-aluminum radiator uses B-Tube technology for improved heat transfer.

Key Features

Fits 2002-2007 Subaru Impreza WRX and STI.
This is an all-aluminum radiator with a black finish.
Features CSF's exclusive 2-row, 42mm core with B-Tube technology for increased heat transfer surface area.
Uses ultra-efficient, multi-louvered fins precisely aligned to maximize airflow and heat rejection.
Designed as a direct fit, requiring no modifications for installation.
CNC machined brackets and fittings ensure durability and a precise fit.

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Fits these vehicles

Subaru Baja 2004-2006
Subaru Impreza 2002-2007

Product Details

When you're working on a 2002-2007 Subaru Impreza WRX or STI, especially one that sees track time or has a more powerful engine, keeping it cool is key. This all-aluminum radiator from CSF is built to handle the extra heat. It's designed as a direct replacement, meaning it fits right in without needing any modifications to your car's mounting points or connections.

What sets this radiator apart is CSF's B-Tube technology. Instead of standard oval tubes, these B-tubes are shaped and brazed to increase the surface area by about 15% compared to regular tubes. This allows for a dual liquid flow, which helps dissipate heat more effectively. The core itself is a 2-row, 42mm design, and it uses multi-louvered fins that are precisely aligned to maximize airflow. This combination means better cooling performance, whether you're daily driving or pushing your car hard.

You'll also find CNC-machined brackets and fittings for a solid, durable connection, and the inlet and outlet are designed to match the factory locations, so you can reuse your original hoses. It also comes with a black finish for a stealthy look under the hood and includes an all-aluminum race-style drain plug for easy fluid changes.