Bolts directly to the original Nissan 3-bolt exhaust manifolds and adds a flex coupling to reduce vibration.
 
Available in stock 1.75" - for R16, and  2" - for U20/R-stroker engines.
 
All US production, Stainless  Steel.
 
Sorry,  we are out of stock on these and will make more next month.   Both  sizes show as in-stock to allow pre-orders.   Orders will be filled as they come in,  first come, first shipped.  Thank you!
 
 
NOTE:  This version is not for the early-'64-'67 "clamp style" factory manifolds or aftermarket headers.   
 
Studs are not included.  This adapter fits the existing studs on your manifold!   Please message us if you need the studs,  we have them as well. 
 
 
Photo is a temporary placeholder,  we'll update that with new photos when we make more adapters.  Thank you!