Just make sure to check the tabs on where they attach.
Turned out mine was leaking from cracked tabs. There were hair line cracks you could 'not' see but the water found it's way out thru them.
When we went to replace just the valve blade the tabs broke right off when we were unscrewing it. Mobile repair says he sees it alot because the assembly is 'suspended', moves, and takes a punch from the constant pounding driving down the road.
They just cut off both pipes coming from the black and gray and installed a whole new Y assembly. You can pick the Y assembly up at any camping store or dealership. I installs just like a residential fix under a sink with a rubber sleeve and hose clamps.
That way you would have the correct fitting for the sewer hose too.
