Because I've had problems with the upper housing leaking and the cap not sealing well. If your radiator is higher than your water outlet there is no need for the other cap. Buy a block off plate, silicon it up, you're done.
the allstar swivel neck does seem a little cheesy on the quality side but there is a ton of them out there and I have never heard of a single failure or leak
Heck it is a nice looking chrome looking piece with double o rings and never has leaked. As for the make I have absolutly no idea who made it. Does look like a Trans Dapt brand 6016 but like I said I bought it years ago when I went with a double pass radiator. My radiator cap is on the radiator and the neck looks like a plain ol neck.
I don't know why u don't want to go with AN fittings I'm assuming cost I have been using the AN setup for three seasons with zero problems money well spent in my book.
Bookmarks