955/957 CSF HD Radiator
Fits all 955/957Cayenne models (2003-2010)
CSF has a long and successful track record with Porsche cooling systems. From Intercoolers and Radiators for newer water-cooled models, to Oil Coolers for the Air-Cooled classics, CSF does it all. CSF also produces the most popular and widely used Performance Radiators for a variety of Off-Road applications. Therefore, you can be confident that you will be getting the best radiator possible. In addition, this new 955/957 Cayenne Radiator features CSF’s latest Ultra-Efficient 5mm fin cooling technology. The new fin technology increases the heat transfer area over a traditional radiator by 20-25%.
The original OE radiator from Porsche is a plastic tank radiator with a single row aluminum core design. While this is generally accepted as good quality and durable, it just isn’t enough for the Cayenne. The 955/957 is notorious for having cooling issues. Just driving down the road on a hot day can overheat the engine and off-roading and towing/hauling is much harder on the cooling system. On top of that, these SUVs are 15-20 years old now. Those still running the original radiator have definitely lost some cooling efficiency due to bend/damaged fins and tube clogging. Needless to say, CSF had a lot of issues to address while designing this new radiator
Testing showed a steady 18-20°F degree differential between the CSF and OE Radiator equipped vehicles. Both started out at 186.8°F (86°C) with the OE Radiator ending at 212°F (100°C) and the CSF Radiator ending at 194°F (90°C). These are very impressive real world results on the earlier prototype model.
Berg did notice coolant temperatures creeping up to 225°F (107°C) while doing an excessive amount of donuts (extreme testing). Upon hearing that, CSF decided to take the radiator a step further in performance to ensure customers had enough cooling headroom for any type of driving or activities they may want to enjoy. To offer the ultimate cooling solution, the design was updated to incorporate CSF’s latest 5mm fin technology, recently introduced at the end of 2023. This new core specification offers even more heat transfer area and thermal efficiency. Ready to take on the most demanding off-road conditions in the world.
The latest feedback from Berg Peaks’ testing on the new 5mm fin version in the same vehicle has been overwhelmingly positive. Berg observed an additional 2% improvement in the highest temperatures seen on the same 10,000 foot climb. The highest temperature the Cayenne reached was 206°F (97°C). This is even more impressive of an improvement considering the ambient temperature during the test was 59°F (15°C). The previous test was conducted with an ambient temperature of 23°F (-5°C). Berg also observed 25% faster recovery times over the factory radiator. This is a 5% improvement over the previous version.
