CSF Porsche 911 Carrera (991) / Cayman (981) / Boxster (981) Race Central Auxiliary Radiator

Beyond the two side-mounted radiators, several 991 Carrera and 981 Cayman/Boxster models rely on a central auxiliary radiator as part of the wider cooling system - and it's built to the same factory standard as the side units, meaning it carries the same long-term vulnerability to plastic end tank cracking and leaking. CSF's Race Central Auxiliary Radiator replaces it with the same proven B-Tube core technology used across their wider Porsche cooling range.

The 2-row, 42mm core uses CSF's exclusive B-Tube design - a specially engineered "B"-shaped tube, carefully formed and brazed over the seam, delivering approximately 20% more efficiency than a regular oval tube while allowing for thinner, lighter, yet stronger aluminium construction. Paired with 6.5mm multi-louvered fins for maximum surface area contact, and CNC-machined, welded OE-style brackets for genuine durability, this is a true drop-in fit - inlet/outlet connections are designed to match the OE connections exactly, so you can reuse OEM hoses or aftermarket alternatives without modification.

Important - verify fitment with your VIN: some GTS 4.0 models used OE part #991-106-137-02 (matches CSF #7060), while others used OE part #991-106-138-02 (matches CSF #7068) - these are not interchangeable, so confirm your exact OE part number before ordering.

Why Choose This Auxiliary Radiator

• CSF's exclusive B-Tube core technology - ~20% more efficiency than a regular tube design
• Eliminates the OEM's plastic end tank weak point - genuine long-term reliability upgrade
• CNC-machined, welded OE-style brackets - durable, precise fitment
• True drop-in fit - OE-matching inlet/outlet connections, reuses factory or aftermarket hoses
• Part of CSF's complete 991/981 cooling range - pairs with their left/right side radiators for a full system upgrade
• VIN-specific fitment available - two part numbers to match your exact OE configuration

Compatibility

• Porsche 911 Carrera (991, 2012-2019)
• Porsche 911 Carrera S/4/4S/GTS/Targa variants (991)
• Porsche Cayman (981, 2014-2016)
• Porsche Cayman S/GTS/GT4 (981)
• Porsche Boxster (981, 2013-2016)
• Porsche Boxster S/GTS/Spyder (981)

Part Numbers

• CSF #7060 (replaces OE #991-106-137-02)