I put the HD oil cooler on my 08 and after a couple of year it broke.
The thermostat in the HD oil cooler failed so I replaced it with a Jagg oil cooler which IMO is a lot better oil cooler.
I got the Jagg 10 row oil cooler (HD oil cooler is only 6 rows) without the thermostat and without the fan and it works great.
The fan option is only needed if you ride in the city where there is a lot of stop and go traffic because once you go 10 or 15 mph the fan is worthless.
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