The CII-50000 Crate Engine Water Neck Riser has (2) 3/8NPT ports raised above the centerline of the block.
These ports are raised so the bypass lines running to the rear of the intake manifold on a GM 604 engine will not lay on the manifold.
It also has a 1/8NPT port in the center of the block for utilizing a water pressure switch.
To further the amount of uses from this water neck riser, we have added (2) 1/2NPT ports on the opposite side and also a 1/4X20 tapped hole for a ground strap.
Comes with two gaskets.