300/440/550 After Market Waterbox

Hey guys

I have an aftermarket waterbox in my 550 and it has a cooling nipple in the middle of the waterbox, it looks like a muffler.

Is it benificial to run a cooling line here, im not running dual cooling. Westcoast pipe




Site Supporter
wilmington, nc
The line there is good to quiet it down, not really any performance change. I would use it, but I would still make sure to have a visible pisser too.
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