3 Inch to 2.5 Inch Header Collector Reducer Kit Pair with Copper Gaskets | 18 gauge 304 stainless steel construction with compact 3.5 inch length for custom exhaust fabrication and tight spaces.

This 304 stainless steel header collector reducer kit is designed for builders, fabricators, and performance enthusiasts running custom exhaust systems. The collectors feature a standard 3 inch 3-bolt header flange inlet reduced to a 2.5 inch or 2 1/2 inch exhaust outlet, making them ideal for adapting performance headers to smaller diameter exhaust piping. Each collector measures approximately 3.5 inches (3 1/2 inches) in overall length, allowing for easier fitment in tight spaces where longer collector reducers may interfere with chassis components or exhaust routing. The compact design makes these well suited for custom exhaust fabrication and performance builds. The collectors are constructed from 18 gauge 304 stainless steel tubing with an approximate wall thickness of 0.05 inches. This material provides excellent resistance to corrosion and heat, making it suitable for high-temperature exhaust environments and long-term use. This kit includes solid copper 3-bolt collector gaskets, a key upgrade over typical composite or fiber gaskets. Copper gaskets are commonly preferred in performance and custom exhaust applications due to their ability to handle high exhaust temperatures while maintaining a consistent seal. The 2.5 inch outlet is designed for custom exhaust connections and may be welded or clamped depending on the installer’s exhaust configuration. These collectors are intended for universal applications using standard 3 inch 3-bolt header collectors. What’s included in the box: ● Two 304 stainless steel header collector reducers ● Two 3-bolt flanges ● Two solid copper 3-bolt collector gaskets ● Mounting hardware included Fitment note: Designed for use with standard 3 inch 3-bolt header collectors and 2.5 inch (2 1/2) inch exhaust systems. Intended for custom exhaust applications. Professional installation is recommended.

• 3 INCH TO 2.5 INCH REDUCER designed to adapt a standard 3.00 inch 3-bolt header flange to a 2.5 inch or 2 1/2 inch exhaust outlet for custom exhaust systems and performance builds.
• COMPACT 3.5 INCH LENGTH measuring approximately 3.5 inches (3 1/2 inches) overall, making these collectors ideal for tight installations where longer reducers may interfere with chassis or exhaust routing.
• 18 GAUGE 304 STAINLESS STEEL construction using approximately 0.05 inch wall thickness tubing for excellent durability, heat resistance, and corrosion resistance in high-temperature exhaust environments.
• INCLUDES COPPER COLLECTOR GASKETS featuring solid copper 3-bolt gaskets designed to provide reliable high-heat sealing compared to common composite or fiber gasket materials.
• COMPLETE PAIR WITH HARDWARE includes two stainless steel header collector reducers, two 3-bolt flanges, two copper collector gaskets, and mounting hardware for installation.