BBK 3/8" Phenolic Spacer for BBK SSI 5.0L Intake Manifolds.As one of the most affordable bolt-ons for today?s automotive enthusiasts, BBK?s phenolic manifold spacer kits have proven to be a great way to increase performance. CNC machined from a custom phenolic fiber material, these spacer kits increase power by dramatically reducing the transfer of heat from the lower to upper intake manifold. This in-turn produces lower inlet air temperatures which results in added horsepower and the ability to addmore timing advance with less detonation.
BBK phenolic manifold spacers have also become a popular way of increasing manifold to valve cover clearance to accommodate popular bolt-ons such as performance rocker arm covers.
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