Does anyone know a good source to buy these ? The ones I keep using end up cracking, threatening to leak. Like to find silicone if possible. I want to cap off several coolant nipples that I no longer use.


thanks

 

You could always tap a bolt in.. May take more work, but it's pretty reliable.

 

I've yet to find a cap that's designed for the job. The technique I've always used is a short piece of hose, 2 hose clamps, and a bolt. Seems a little ghetto, but it works ROCK solid and you won't have any problems down the road.

Even better is drilling/tapping or welding, but that's far more involved.

Dale

 

Those cheap caps are for light vacuum loads on a non-turbo intake manifold, not for anything else. I went bolt +hose path like dale. I use just part of the bolt shank to keep things compact.