4 into 1 Exhaust Manifold Collector Pipe Joiner from Header

Description Brand New T304 Stainless Steel 4-1 Exhaust Manifold Collector What is a Collector? The exhaust manifold collector is an essential component that combines the exhaust gases from multiple cylinders into a single outlet. In a 4-into-1 design, four primary pipes merge smoothly into one central outlet — improving exhaust scavenging, increasing flow velocity, and enhancing engine power and response. Our collectors are precision-fabricated from T304 stainless steel, ensuring exceptional corrosion resistance and heat endurance. Ideal for custom manifolds, performance upgrades, or replacement of existing units.   Specifications: Material: T304 Stainless Steel Inlet Pipes: 45mm (x4) OR 50mm (x4) – choose from drop down options Outlet Pipe: 63.5mm ID Overall Length: 6.5″ / 160mm All sizes are approximate Please note: Images are for illustration purposes   Each collector is TIG welded and internally blended for a smooth transition, reducing turbulence and back pressure. The result is a more efficient exhaust flow and improved engine breathing. Perfect for performance builds, turbo manifolds, and race headers.