The 4 Into 1 Merge Collector is a high-quality stainless steel exhaust collector designed for auto performance parts. With a 1 1/4" pipe size, this collector is suitable for T3 and T4 turbochargers. It offers excellent performance capabilities, making it a great addition for racing and performance enthusiasts looking to enhance their vehicle's exhaust system. The manufacturer part number z1082765 ensures compatibility and reliability in this aftermarket part.