What makes the B-tube technology different from standard radiator tubes?

CSF's B-tube technology uses a specially engineered tube shape that increases the heat transfer surface area by approximately 15% over standard oval tubes. This design also allows for 'dual liquid laminar flow' and is stronger than traditional welded tubes, enabling the use of thinner, lighter aluminum with better cooling efficiency.

Is this radiator compatible with automatic transmissions?

No, this CSF radiator is specifically designed for manual transmission vehicles only. It is not compatible with automatic transmission setups.

Does this radiator come with new hoses or clamps?

This radiator is designed to use the OE style connections, allowing you to reuse your OEM hoses or compatible aftermarket hoses. New hoses and clamps are not included with the radiator.

CSF High-Performance Aluminum Radiator 7095 - 2008-2021 Suba

Name: CSF 08-15 Subaru Impreza WRX/STI 2-Row 42mm High-Performance Aluminum Radiator
Brand: CSF
Price: 455.00 USD
Availability: InStock

CSF 08-15 Subaru Impreza WRX/STI 2-Row 42mm High-Performance Aluminum Radiator

$455.00

In Stock

CSF 08-15 Subaru Impreza WRX/STI 2-Row 42mm High-Performance Aluminum Radiator. Keeps your engine cool with advanced B-tube technology.

Key Features

Fits 2008-2021 Subaru Impreza, WRX, and STI models, among others.
Features CSF's exclusive B-tube technology for increased heat transfer surface area and dual liquid laminar flow.
2-row, 42mm core with ultra-efficient 6.5mm tall multi-louvered fins to maximize airflow and heat rejection.
All-aluminum construction with TIG-welded seams for durability and efficient cooling.
Designed as a direct-fit installation, requiring no modifications to your vehicle.
CNC machined mounting brackets ensure a secure and durable fit.

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Product Details

This CSF radiator uses an advanced B-tube design, which is a specially engineered tube shape that increases the heat transfer surface area by about 15% compared to standard oval tubes. This means it can handle more heat rejection, making it a solid choice for your Subaru WRX or STI, whether you're pushing it on the track or just want improved cooling performance. It's built with a 2-row, 42mm core and features multi-louvered fins that are precisely aligned to maximize airflow and heat dissipation.

Crafted from all-aluminum and TIG-welded, this radiator is built to last and is individually pressure tested to ensure it's leak-free. The B-tube technology is actually stronger than traditional tubes, allowing CSF to use thinner, lighter aluminum without sacrificing durability. It's designed as a direct fit for a range of Subaru models, including the Impreza, WRX, and STI from 2008 through 2021, meaning you won't need to make any modifications for installation. The inlet and outlet connections are made to match the factory setup, so you can reuse your existing hoses.

This radiator is specifically for manual transmission vehicles. CSF has been making radiators for over 50 years, and this unit is a testament to their experience, offering a significant cooling upgrade for your performance Subaru.