Fuel Tool EFI Check Valve Lower O-Ring - MC200-5

I was a bit worried about buying these o-rings based on some of the reviews. But I decided to go for it and give it a try. I had to use a dental pick to get the old o-ring out, and when I did, it came out in fragments. It was dried out and completely disintegrated when I removed it.I have a 2007 883XL Sportster and the new o-rings looked too small at first, but I figured I should at least try them since I had nothing to loose... I decided to lubricate the o-ring with some silicone lube I use for the o-rings in my swimming pool before installing. I am sure that a professional will tell me that is the wrong lubricant to use, but we are talking about such a small o-ring and a small surface area I figured it is probably ok. The new o-ring was a bit tricky to get into it's seat, but I was able to use a socket that fit perfectly into the check valve and that pushed the o-ring right into its seat without twisting it. I think this was also simplified because I didn't try to insert the o-ring dry. - I reconnected the fuel line, put the key in the ignition and flipped the switch to 'RUN' which pressurizes the fuel pump/line. Previously this would have _sprayed_ gasoline all over the place, but the new o-ring did the trick. Not a drop of fuel leaking from the check valve. I took the bike around the block a few times, and the assembly remained dry as a bone.So I have to give the product a good review. It worked as advertised and I really only needed 1 o-ring. So I have a pack of 4 spares to throw on the bench for the future.

Why did you pick this product vs others?:product greatmore instruction helpful

Works!

Used this on a 2003 HD Fat Boy. I also installed the upper O-ring, valve and spring on the upper female connector on the tank. After installing and connecting hose, everything seemed fine until I turned the ignition switch on. Fuel started to pore out between the two connectors. I removed the hose end connector and noticed the metal part that makes contact with the O-ring was semi rough. I took car polishing compound and carefully polished the metal connector until it was smooth, re-installed and bike is back and running again.

worked well enough, took a few hours to finally seat in and stop the leak but it worked

Item received in good order

Poor reviewers prior tried putting it in dry... I used a dab od Lucas red and tacky grease a small socket and dental pick easy as it can be just relax and guide it in slowly use the outside diameter of your socket to seat the ring using a circular motion 😅 shes dry as a bone

Bought these and uxcell Nitrile o-rings at the same time due to a previous post I read. That poster was absolutely correct. Fueltool’s are flimsy and virtually impossible to install while check valve is on the bike without their $100 installation tool. Search uxcell Nitrile o-ring 14mm od x 10mm I’d x 2mm thick and you can get a pack of 20 for less then the 5 fueltool gives you and they actually hold their shape better allowing installation with common tools like a 9/32 socket and dental type pick tool to guide it into the check valve voice. I did it, they seal awesome and for no good reason I threw the other (19) in my tourpak.