Slip-On Collector 1-7/8

The Schoenfeld Slip-On Collector 1-7/8 (Model SO83541) is a purpose-built exhaust manifold collector designed for enthusiasts and fabricators building high-performance engine systems. This slip-on collector consolidates four individual primary tubes into a single outlet, serving as the critical junction point where exhaust gases from separate cylinder runners merge before flowing into the main exhaust system. Whether you're assembling a custom-built engine, upgrading a vintage hot rod, or tuning a competition vehicle, this collector provides the structural and flow characteristics needed for efficient exhaust scavenging.

Constructed from durable steel and finished in black paint for corrosion resistance, the Slip-On Collector 1-7/8 features four 1-7/8-inch primary tubes that accept individual header pipes from each cylinder. The design accommodates a 3.5-inch outlet diameter, allowing smooth transition to your secondary exhaust piping without restrictive bottlenecks. At 9 inches in length and weighing just 2.29 pounds, this compact collector integrates seamlessly into tight engine compartments while maintaining structural rigidity under thermal cycling and vibration. The slip-on configuration simplifies installation by allowing flexible pipe connections rather than rigid welding, reducing fabrication complexity and labor time.

Mechanics and engine builders working with small-block and mid-displacement naturally aspirated engines benefit most from this versatile collector. The 1-7/8-inch tube diameter balances flow volume with back pressure, making it ideal for street applications and moderate-performance builds where torque delivery and drivability matter. Installation requires four individual header tubes, mandrel bends, or custom fabrication to mate with your specific cylinder head configuration. This collector works equally well on carbureted and fuel-injected platforms, supporting both traditional and modern engine management systems. Verify your primary tube diameter and outlet requirements before ordering to ensure compatibility with your exhaust system design.