09-07-2020, 02:15 PM
|
 |
Administrator
|
|
Join Date: Jul 2004
Location: Wilton, CA.
Posts: 13,475
Thanks: 7,715
Thanked 2,362 Times in 1,104 Posts
|
|
I've used both without issue, but I'd think the o-ring style is probably better as that's what the OEM's moved to. I'd guess the adapters are supplied for those with the older vehicles that use an inverted flare, so the box can be bolted on without having to make new lines.
|