Porsche 991 Turbo / GT3/GT3 RS/Cup CSF Performance Aluminum Radiators

CSF has over 5 decades of experience manufacturing radiators. So when it comes to keeping your engine cool and your 911 Carrera running at its best, a CSF High-Performance All-Aluminum Radiator is the obvious choice. Designed to perform on the street or at the track, a performance radiator is a must-have for both high horsepower builds as well as race vehicles which need added cooling performance in motorsports environments. This radiator features a 2-Row core with CSF’s exclusive B-Tube Technology: Unlike a regular oval shape “O” type radiator tube, CSF uses a specially engineered tube in the shape of a “B”. These “B-tubes” are carefully formed and then brazed over the seam to seal. CSF is able to use thinner and lighter aluminum material (with better cooling efficiency) because this design is actually stronger than normal “O” shape tubes that are welded. The design (inlet in the middle of the tube that is seam brazed) increases the heat transfer surface area of the tubes by approximately 15% over regular tubes – producing the efficiency of two smaller tubes vs. one large tube within the same space criteria. With “B-tubes” you are able to get “dual liquid laminar flow”. CSF also uses ultra efficient multi louvered fins that are carefully and precisely aligned to maximize airflow through each radiator core. Fin specifications are carefully measured and calculated for each application, and tested for maximum heat rejection efficiency in our wind-tunnel lab.

KEY DESIGN FEATURES

• 2-Row 42mm Core Featuring CSF’s Exclusive B-Tube Technology (+20% Efficiency)
• 6.5mm Fin Height w/ Multi-Louvered Design for Maximum Surface Area Contact
• Individually Leak and Pressure Tested
• All-Aluminum Design with 100% TIG-Welded End Tanks
• CNC Machined Brackets and Fittings for Superb Fit and Durability
• OEM-Style Machined Inlet/Outlet Connections
• Plug-and-Play “Drop-in” Fit with No Modifications Required for Installation
• Accepts OEM AC Condenser and Fan Shroud
• High-Performance Upgrade Suitable for Professional Racing, Street Performance, or OEM Replacement

Whether you’re building a street sleeper or prepping for your next track day, CSF’s 991 Radiators are engineered to handle the heat and then some.

THE CSF ADVANTAGE

The CSF radiators feature the latest 5mm multi-louvered fins. These fins significantly increase the heat exchange surface area improving overall cooling efficiency and recovery while still maintaining good airflow. The core is much larger than the factory featuring 2-Row 42mm aluminum core. This both increases the fluid capacity of the radiator, and improves the cores ability to dissipate heat. CSF’s Exclusive B-Tube Technology increases the heat transfer by approximately 15% over regular oval welded tubes. Combined with the new 5mm fins, heat transfer is increased by up to 25% overall. In addition, the super-efficient multi-louvered fins maximize airflow through the core for the best possible performance. The TIG-Welded 100% All Aluminum construction increases the overall strength of the radiator. This improves durability and longevity so you can be confident it will hold up to hard driving conditions. The CSF radiator mounts in the factory location and requires no modifications or cutting. The latest 5mm fin technology was introduced at the end of 2023 which offers even more heat transfer area and thermal efficiency than CSF’s tried and true 6.5mm fins. Porsche owners are known to push their cars hard and CSF is confident this radiator is ready to take on the most demanding conditions in the world.