Used when running the remote lines to the rear of the intake to prevent vapor pockets. The riser thickness is 1'' and comes with 1/4'' or 3/8" NPT threads. This part number fits any small block. Also can get extra 1/8" NPT port for pressure sensor.
We took our thermostat riser and our intake divider and made a trick little combo package it's lighter, shorter, uses 1 less gasket, and costs you less money then running both together. This fits any small block.