Merge Collectors

Merge Collectors & Exhaust Collectors

Merge collectors combine multiple primary header tubes into a single outlet, forming the critical transition between individual exhaust runners and the rest of the exhaust system. Collector design directly impacts exhaust scavenging, backpressure balance, and power delivery — making the right collector a key component in any header build or custom exhaust fabrication project.

OneFastShop carries merge collectors including 4-into-1 collectors, 4-into-2-into-1 stepped collectors, slip-fit and flanged designs, stainless steel and mild steel construction, and collectors in a range of primary tube and outlet sizes for header fabrication, custom exhaust builds, and turbo manifold projects.

Every merge collector at OneFastShop ships brand-new and ready to weld or clamp. Whether you're fabricating custom headers, replacing a worn collector, or building a turbo manifold, OneFastShop has the collector. Shop the full merge collectors collection today.