Product details:

Constructed out of cast 304 stainless steel with a reinforcing rib for strength along the flange and ultra-thick wall flange at the port. The Bladerunner exhaust manifold out flowed the factory exhaust by 23-percent improving exhaust flow, performance and throttle response. This manifold also features 2 EGT probe ports, thick wall design for increased strength (0.25" vs 0.15" for the stock unit), matched ports and has a merged runner design to maximize maximize exhaust flow. Once you install this awesome exhaust manifold, you will feel improved turbo spool up times, improved throttle response and performance.