The Porsche 981 and 718 Caymans are incredibly popular track cars. One issue these cars tend to have on track is overheating and going into limp mode. Porsche helped resolve this issue on the GT4/RS with a larger center radiator with ducting/venting to improve air flow. Upgrading to the larger GT4 Radiator is a huge improvement and can be done with factory parts with no modifications necessary. CSF friend and media partner Dustin Williams recently performed the GT4 Radiator Conversion on his Cayman GTS. He was kind enough to share the parts needed to complete this conversion.
GT4 Radiator Conversion
Parts List
The following list of parts are all required to mount the GT4 Center Radiator (use CSF #7068). You will still need a GT4 or GT4RS Front Bumper Cover and related trim/mounting pieces. Companies like Pelican Parts sell conversion kits for the 981, just be sure to find one that uses an OE bumper and parts.
| Product Description | Part # | Ouantity |
|---|---|---|
| CSF GT4 Center Radiator | CSF #7068 | 1 |
| Upper Duct | 991-504-489-90-1E0 | 1 |
| Support Frame | 991-504-487-91-1E0 | 1 |
| Air Duct | 981-575-141-80-1E0 | 1 |
| Radiator Outer Support | 991-106-338-01 | 1 |
| Radiator Lower Mount | 991-106-538-02 | 2 |
| Radiator Upper Mount | 901-106-537-0 | 2 |
| Water Hose | 981-106-638-90 | 1 |
| Water Hose | 981-106-639-90 | 1 |
| Hexagon Nut | PAF-108-333 | 4 |
| Inner Support Retainer | 991-504-587-90 | 2 |
| A/C Condenser Mount Bolt | 999-919-133-09 | 2 |
| AC Line | 981-573-103-8 | 1 |
| A/C Refrigerant Liquid Hose | 981-573-105-81 | 1 |
| Support | 991-573-841-0 | 1 |
Installation
With all the parts being bolt-in and plug & play, the GT4 Radiator Conversion very straight forward. Check out Dustin Williams’ videos on the installation.
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