These ports can be used to measure inlet/outlet water temps as well as used as breather ports to help in the bleeding procedure
Super-High Pressure CSF Oil Cooler with Multi-Channel Microtubes for Optimal Oil Flow and Maximum Surface Area Contact
Model specific R134a o-ring kit
its your choice (Both are included in the box)
The CSF 911 Carrera radiator is a true "Drop-in fit" design requiring no modifications to install
CSF Universal Large Single-Pass Oil Cooler - M22 x 1.5 - 12.0L x 9.33H x 2.16W Land Cruiser These ports can be usedClick Here for the Full Press Release & Additional Product Details In 2019, CSF "reinvented" a common yet critical item, with features and benefits never seen before on an aftermarket high performance oil cooler. This cooler can be utilized for; engine oil cooling, transmission oil cooling, power steering, differential cooling, and as a water coolant heat exchanger. CSF oil coolers are much more robust, durable, and can withstand a higher peak burst