BladeRunner Ported Ductile Iron Exhaust Manifold

Bolt on instant performance by upgrading or replacing your restrictive, cracked factory manifold with this BladeRunner port matched manifold. Designed to outflow the stock manifold by 12% for improved throttle response, the BladeRunner manifold has both the inlet and the outlet ports machined to match the factory ports for a smooth transition and optimal flow path. Constructed from heavy walled, ductile iron to resist warping and cracking, the BladeRunner will outlast OE and factory replacement manifolds.