I did a lot of research before purchasing an oil cooler and I ended up going with the Jagg 6-row with t-stat and anti-rotation device. In my research, I found that the t-stat is a very simple device with a very low failure rate - even though it is said t-stats are not necessary, and that may be true, I just thought it couldn't hurt to get a quicker warm up at cold start on days when it's 40 degrees - didn't see any harm. I also tried to install the anti rotation device but couldn't get it on - I read some can and some can't but I think it's worth $10 to give it a try - less worry about loosening the adapter when changing the filter thus less worry about creating a leak.

One tip about the install if you do it yourself - make sure the hose clamp adjusting screws are facing in a direction that ends up being accessible when install is complete because even though there was no leaking immediately after the install during an idle test, all hose attachments leaked a little after a ride and needed to be tightened - I've ridden about a 1000 miles since and not a drop of oil leaking. Ambient temps haven't been above 65 and usually more around 50 and the oil temp has been about 200-220. The real test for me will be this summer riding through the Mojave desert in July.

 

I'd go w/out the fan I'm thinking. On the fence about a t-stat.

 

Thinking about changing my HD cooler to a Jagg. And going for the fan. Cooler is not cooling much when sitting in traffic with no fan

 

I just got off the phone with Jagg. They recommended the lower 10 row over the vertical 6 row as even in its lower location, they said it'd be more effective cooling the oil. He said the 4 extra rows more than make up for the extra air the vertical mount would get. He also recommended NOT using the thermostat adapter. They offer it for people who just feel the need to have it. That saves $40 and one less thing to go wrong I guess. Now, is the Jagg worth the extra cost over the H-D premium model? I have a card thru a local dealer giving me 20% off. Cost w/tax on the H-D unit is $253. My cost thru a family member on the Jagg 10 row/adapter/anti-rotate device is $285 Thoughts ?

 

read my original comments on this thread , I threw my HD Unit in the trash

 

I installed the 10 row low mount fan assisted model without the built in thermostate oil filter adapter. Quite satisfied with the product but is a bit of a PITA to install mainly because of dealing with the fan and its wiring both to the underside of the adapter but also to the rear brake switch.

I bought mine off of DirectHarleyParts.com and forum sponsor. They had the very best price of anyone plus when you talk to them ask them for the member discount.

 

I have the lower 10......first bought for 09 RG...sold bike switched it to a new 2010 Ultra no.weaks......I think anti-rotational mounting is good....thermostat....? what for? .....great product good company

 

Wow there's a member discount? Awesome, I'm going to be ordering the mount in the next couple weeks. Already have the 10-row horizontal cooler, just need the mount now to complete the package. After reading here I may skip the thermostat version.

 

I won't cheap out over $50 Will be putting one on on my next oil change.

 

I have been convinced - called DirectHarleyParts.com, ordered my JAGG FP2400. Thanks everyone!