Auxiliary power steering cooler for Porsche Boxster and 911, 986 and 987

How to add a lower-cost power steering cooler to your 986 and 987 Porsche. Important and effective for track days especially if you are running high grip race tires.

[@HokieD1993]

How did it work out? Would you still recommend doing this the same way? I took my Boxster S to the track and it spewed Pentosin out of the PS vent on top of the motor.

[@mikepetersen3]

It works great. I run her, sticky slick track tires, and I am a track driving instructor, so I probably do almost 1000 labs a year. Have never had an overheating issue of the PS fluid.

[@jons.1659]

What size (OD) double barb fitting did you use to connect your hose with the stock rubber hose?

[@mikepetersen3]

Hi Jon, I'm sorry, I did not write down the size, my apologies. It was a standard size that I purchased from the local auto parts store.