Slip-On Collector 1-3/4 3-1/2 OD

The Slip-On Collector 1-3/4 3-1/2 OD from SCHOENFELD is a purpose-built exhaust header collector designed for serious engine builders and performance enthusiasts who demand maximum scavenging efficiency. This component bridges the transition between individual header tubes and your primary exhaust pipe, making it essential for any street, strip, or road race application where header design directly impacts horsepower and throttle response. The 1-3/4 inch inlet diameter accepts standard primary tubes, while the 3-1/2 inch outlet diameter provides optimal flow characteristics for mid-range to high-RPM performance.

SCHOENFELD collectors are engineered with precision tube construction that minimizes turbulence and exhaust gas reversion at critical RPM ranges. The slip-on design allows straightforward installation onto your existing primary tube work without requiring full header fabrication—a significant advantage when upgrading or modifying an established engine platform. This collector's 21.45-inch length provides adequate runner overlap zone while the compact 3.9-inch width ensures clearance in tight engine bay configurations common to vintage and modern performance builds. The welded steel construction delivers durability under sustained high-temperature cycling, essential for consistency during extended track sessions or street driving.

Mechanics and engine builders integrating this collector benefit most when pairing it with matching header tube sizing and a properly tuned muffler system to realize full scavenging potential. Compatibility spans both naturally aspirated and moderately boosted applications, provided your primary tubes terminate at 1-3/4 inches. Installation requires basic welding equipment or professional fabrication support; positioning the collector's outlet toward your chosen exhaust path ensures unobstructed flow without kinks or compression. At 6.43 pounds, the collector adds minimal weight while contributing measurable gains in mid-range torque and top-end power—gains most noticeable on dyno testing or road courses where consistent exhaust scavenging defines engine responsiveness.