CNC machined 4 holes design spacer for 4150 series holley carbs. Made of 6061 T6 aluminum with black anodized finish. Increase flow and velocity, fuel signal, smoother transition in to manifold, can also reduce heat transfer from manifold to carb for more horsepower up to 30+ and is a light weight design. Please e-mail questions.
DEL-TRON PRODUCTS
