4-1 S.S Merge Collectors 2.25in Inlet ID 3.5in

The 4-1 S.S Merge Collectors 2.25in Inlet ID 3.5in from Vibrant Performance is a stainless steel exhaust header designed for engine builders and performance enthusiasts looking to enhance horsepower and torque. This merge collector effectively combines four individual runner tubes into a single 3.5-inch outlet, optimizing exhaust gas flow and reducing backpressure.

Constructed from high-quality stainless steel, the 4-1 merge collector features precision-welded construction for durability. The design includes a 2.25-inch individual inlet runner diameter that matches the flow characteristics of many modern small-block and mid-sized engines, enhancing scavenging efficiency.

This merge collector is suitable for engine platforms ranging from 350 cubic inches to mid-sized displacement motors, making it ideal for street rods, muscle cars, and performance trucks. Installation requires fitting to a compatible header flange and connecting to a 3.5-inch exhaust system.