Powerflow Big Block Chevy Manifolds Only Kit - Polished 

Powerflow Big Block Chevy Manifolds Only Kit , Polished(Pair of Manifolds)

Powerflow manifolds are manufactured using the finest materials and most advanced techniques available. The high quality aluminum manifold castings feature water jackets that surround each exhaust passage, including the port, to eliminate the possibility of burn out.

The outside manifold surfaces are polished. Features an external fitting to accept stock MerCruiser thermostat plumbing. Kit includes gaskets and bolts.