The 1-5/8" diameter valve, with high volume oval porting, has proven effective in releasing turbo damaging excess manifold pressure when throttle plate closes.
This assembly is CNC machined from lightweight billet aluminum and is complete with a positive seal o-ring, the threaded port is 1/8" NPT
NPT:
1/8 NPT
Height:
2.125 in.
Diameter:
3.25 in.
Mount Holes:
10-24 5 Places
Inside Diameter:
1.5 in.