Originally Posted by Greg2012FLHTK

I had no leaks for 6 weeks and 1,160 miles. Then after sitting parked overnight one night I found a quarter sized spot of coolant under the bike. Checked it out and discovered the Thermostat housing was leaking at the elbo on the right side. Took it to the dealer. They replaced it and when I went to pick it up they told me they had one in stock but Harley told them not to use it. They wanted to overnight a new and improved one. After they they told me that I decided to look at it before I left. The new and improved one was already leaking at the elbow. They kept it and Harley overnighted a second replacement. They called me after the second replacement and said they took it for a 10 mile test ride and inspected it and no leaks. It was cold and rainy so I had them deliver it. When they rolled it out of the trailer I looked under it and the second replacement was leaking at the elbow. So back on the trailer it went. They called after the third replacement and said they took it for a 10 mile test ride and no leaks but they wanted to keep it over night and check it again in the morning. No leaks with the third one. I have only put about 200 miles on it in the last 3 months due to the snow and cold but so far so good. It seems like they don't leak when hot and under pressure, but only during or after cool down. That's why when the dealer would replace it, test ride and inspected it when they got back it wasn't leaking but would be when I got it back several hours later. Attached are pictures of the original and second of three replacements.

Originally Posted by Greg2012FLHTK

I had no leaks for 6 weeks and 1,160 miles. Then after sitting parked overnight one night I found a quarter sized spot of coolant under the bike. Checked it out and discovered the Thermostat housing was leaking at the elbo on the right side. Took it to the dealer. They replaced it and when I went to pick it up they told me they had one in stock but Harley told them not to use it. They wanted to overnight a new and improved one. After they they told me that I decided to look at it before I left. The new and improved one was already leaking at the elbow. They kept it and Harley overnighted a second replacement. They called me after the second replacement and said they took it for a 10 mile test ride and inspected it and no leaks. It was cold and rainy so I had them deliver it. When they rolled it out of the trailer I looked under it and the second replacement was leaking at the elbow. So back on the trailer it went. They called after the third replacement and said they took it for a 10 mile test ride and no leaks but they wanted to keep it over night and check it again in the morning. No leaks with the third one. I have only put about 200 miles on it in the last 3 months due to the snow and cold but so far so good. It seems like they don't leak when hot and under pressure, but only during or after cool down. That's why when the dealer would replace it, test ride and inspected it when they got back it wasn't leaking but would be when I got it back several hours later. Attached are pictures of the original and second of three replacements.

Originally Posted by Bpago

Bike is back at dealer for 5th time. cap has been replaced, filler neck again for the second time, and one thermostat change. Coolant problems were solved after the filler neck issue, then 1800 miles later and after 5000 mile service, it happened again. Coincidence?? Anyway I'm on my way to pick it up after the latest filler neck problem and they say it's fixed. Bike is 13 months old and H-D still having problems. Maybe Attorney time next.

And now for the Zinger! They provided me a Trike rental at no charge while they have had the bike and conferred with the area Rep. You guessed it! 6 miles to home and after shut down in garage, It over flowed coolant. Can't wait to show them the pictures. The rental bike had 8500 miles on it.

Originally Posted by Stacy73

I have a 2014 FLHTK with 34500 miles on it. Just took it in for the fifth time for coolent problems. The last fix lasted over a year. Hope they get it right this time. Other than the coolent I love the bike. This is the third thermostat.