Hey guys been having a leak and found out it’s coming from this connection what’s the name or part number ?

 

"joint, rubber" N3A2-13-247

 

It's a coupler. Buy a name brand silicone one of the same diameter. Hps or similar

 

Das Boot, N3A2-13-247. its 70mm, silicon works better there.

 

DO NOT USE OEM MAZDA HERE!
It's not capable of holding boost while taking the heat. It will split again in no time.
I recommend 2.75" silicone or cut a straight Heavy Duty 18 Wheeler radiator hose to size.

 

Or get a 99 spec ‘y’ pipe and never have to mess with the coupler. MAZDA even figured out that a coupler there wasn’t...ideal.
I am not associated with this seller, just remembered the ad from not long ago...
https://www.rx7club.com/market/1148636
You can probably make one easy enough, but I would just get the one with the gasket.

 

Yep, get a 2 3/4" silicone coupler. Boostcontroller.com should have them (they also have vacuum hose if you need it).

The stock part is crap.

Dale

 

Also, on-line prices for the OEM coupler run from $45 to $65, so it is pricey.