Aluminum restrictor reduces water temperature up to 20°. Funnel shape restrictor inserts to the lower radiator hose.
The restrictor goes in the lower radiator hose replacing the thermostat restrictor to keep the water in the radiator longer. Therefore, the water is cooler when it reaches the engine. Machined aluminum available for the aluminum racing radiators...
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.