What is B-Tube technology and how does it help my RSX?

CSF's B-Tube technology uses specially engineered tubes that increase the heat transfer surface area by approximately 15% compared to standard oval tubes. This design allows for dual liquid laminar flow, leading to more efficient cooling for your engine.

Do I need to buy new hoses or make modifications to install this radiator?

No, this CSF radiator is designed as a direct 'drop-in fit' and requires no modifications. It's made to accept all your original attaching components, including OEM hoses, the AC condenser, mounting brackets, and fan shroud.

What is the core size and construction of this radiator?

This radiator features a 2-row, 42mm core. It is constructed entirely of aluminum and uses ultra-efficient, multi-louvered fins that are precisely aligned to maximize airflow and heat rejection.

2002-2006 Acura RSX Radiator

Name: CSF 02-06 Acura RSX Radiator
Brand: CSF
SKU: csf-csf-02-06-acura-rsx-radiator-t14-205230
Price: 365.00 USD
Availability: InStock

CSF 02-06 Acura RSX Radiator

$365.00

Only 5 left in stock

Fits 2002-2006 Acura RSX. This all-aluminum radiator uses B-Tube technology for improved cooling efficiency.

Key Features

Fits 2002-2006 Acura RSX.
Features CSF's exclusive B-Tube technology for increased heat transfer surface area.
2-row, 42mm core design with multi-louvered fins maximizes airflow and heat dissipation.
All-aluminum construction with a race-style drain plug.
CNC machined brackets and fittings ensure a durable, precise fit.
Designed as a direct, 'drop-in fit' requiring no modifications for installation.

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Will it fit your car?

Fits these vehicles

Acura RSX 2002-2006

Product Details

The B-Tube technology in this CSF radiator is a notable design choice. Unlike standard oval tubes, these specially formed tubes increase the heat transfer surface area by about 15% over regular tubes, essentially acting like two smaller tubes in the same space. This allows for a dual liquid laminar flow, which helps keep your 2002-2006 Acura RSX running cooler, whether you're on the street or the track.

Built with a 2-row, 42mm core, this all-aluminum radiator is designed for maximum heat rejection. CSF uses ultra-efficient, multi-louvered fins that are precisely aligned to optimize airflow. The brackets and fittings are CNC machined for a solid fit and durability, and the inlet and outlet connections are made to match the factory setup, so you can reuse your OEM hoses. It’s a true drop-in fit, meaning no modifications are needed for installation, and it accepts all your original components like the AC condenser and fan shroud.

This radiator is a well-built option for RSX owners looking for improved cooling performance. It’s a solid choice for both daily drivers and those with higher horsepower builds or track day cars that demand more from their cooling system.