1" Aluminum 4150 CNC Machined Carburetor Spacer Square Bore 4 Port - Blue Speedmaster remote thermostat housings locate

Speedmaster remote thermostat housings locate the filler neck at the highest point of cars with low mount radiators to bleed air

The air flowing under the plenum provides a cooler charge for the incoming air with less heat transfer from the engine

Our dual plane big block manifold is now available with rectangular ports

Speedmaster reusable hose ends are easier to install than cutter-style fittings and are more user-friendly

1" Aluminum 4150 CNC Machined Carburetor Spacer Square Bore 4 Port - Blue Speedmaster remote thermostat housings locateIndividually milled from super durable 6061 T6 aluminum billets, these CNC machined Speedmaster carburator spacers can handle anything your vehicle can dish out. They're so tough, they're guaranteed for life. The precise design of these Speedmaster carburetor spacers provides a smooth transition of fuel from the carburetor to the intake manifold, to increase flow for more performance. They also help to insulate the carburetor from engine heat and