Join Date: Mar 2011
Location: Mid Hudson Valley, NY (USA)
Re: Adding rear spring air bags
I did this installation over 4 years ago, and so far (knock on wood) all is well. It's too easy to over-think this kind of project and make yourself nuts trying to improve upon the kit or the process.
As I went with dual channels, I only had a connection at the nipple of the bag, and at the back of the Schrader valve. No plastic tees to worry about. But yes, I initially assembled a collection of plastic tube compression fittings that I ended up not using. I Rustoleum primed & painted then RTV'ed the drilled hole, and all is well there. Road salt is killing other things on this van, but no trouble in this spot. The exposed lines in the wheel wells didn't collect ice or snow as I had feared.
I still think the Chinese food lids are a good idea to reduce bag end wear, and they do tend to rub thru or crack over time. I usually swap them out with seasonal winter tire changes (November/April), and it's better the wear be on something sacrificial rather than the bags. The shape is perfect; the right diameter and the lip against the bag end keeps them in place. You really don't need to glue them down. But I really should search for something more durable.
Current: '15 Sienna Limited Premium (FWD), '14 Subaru Outback, '13 Honda CRV AWD.
Past: '08 Sienna LE (FWD), '02 Subaru Outback, '02 Honda Odyssey EX