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

CSF's B-tubes are specially shaped to increase the heat transfer surface area by about 15% compared to standard oval 'O' type tubes. This design allows for dual liquid laminar flow, improving cooling efficiency within the same space.

Does this radiator require any modifications to install on my Porsche?

No, this CSF auxiliary center radiator is designed as a true 'drop-in fit.' It requires no modifications to install and uses OEM-style connections, allowing you to reuse your original hoses and mount the factory AC condenser and fan shroud.

Is this radiator suitable for track use?

Yes, this CSF radiator is designed for high-performance applications, including street performance and professional racing. Its all-aluminum construction, B-tube technology, and efficient fin design help manage higher temperatures generated during track driving.

2012-2019 Porsche 911 Auxiliary Radiator

Name: CSF Porsche Cayman/Boxster/Carrera (991/981) Auxiliary Center Radiator
Brand: CSF
Price: 475.00 USD
Availability: InStock

CSF Porsche Cayman/Boxster/Carrera (991/981) Auxiliary Center Radiator

$475.00

Only 6 left in stock

CSF Porsche 911 (991) Auxiliary Center Radiator. All-aluminum construction with B-tube technology for improved cooling performance.

Key Features

Fits 2012-2019 Porsche 911, 2013-2016 Porsche Boxster, 2014-2016 Porsche Cayman, 2017-2022 Porsche 718 Boxster, and 2017-2022 Porsche 718 Cayman.
Features a 2-row, 42mm core with CSF's exclusive B-tube technology, which increases heat transfer surface area by approximately 15% over standard tubes.
Designed as a plug-and-play, drop-in fit, requiring no modifications for installation.
Utilizes ultra-efficient, multi-louvered fins with a 6.5mm height for maximum airflow and heat dissipation.
Includes CNC-machined brackets and fittings for durability and a precise fit.
Constructed with an all-aluminum design and 100% TIG-welded end tanks for reliability.

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Will this fit your vehicle?

Product Details

If you're looking to keep your 2012-2019 Porsche 911, or your 981/718 Boxster or Cayman, running cool, this auxiliary center radiator from CSF is a solid option. CSF has been making radiators for over 50 years, and this one is built to handle the heat, whether you're on the street or the track. It's designed to give you more cooling performance than the stock unit, which is especially important if you've got a high-horsepower build or do any kind of motorsports.

What makes this radiator work so well is its all-aluminum construction and CSF's unique B-tube technology. Instead of standard oval tubes, these B-tubes are shaped to increase the surface area for heat transfer by about 15%. This means it can move more heat away from your engine coolant. It also uses multi-louvered fins that are precisely aligned to help air flow through the core as efficiently as possible. The brackets and fittings are CNC machined for a strong, durable connection, and the inlet and outlet ports are designed to match the factory setup, so you can reuse your original hoses.

This radiator is designed as a direct, drop-in replacement, meaning it fits right in without needing any modifications to your car. You can even reuse your factory AC condenser and fan shroud with it. It’s a well-built part that’s pressure tested to ensure it won't leak.