Collector Adapter Kit 3in to 2.5in Tube

The HOOKER Collector Adapter Kit 3in to 2.5in Tube (Part No. 42107HKR) is a precision exhaust system reducer designed to connect larger diameter collector outlets to smaller piping systems. This stainless steel band-bolt clamp adapter handles the transition smoothly, maintaining system integrity while accommodating varying diameter requirements common in custom exhaust builds and performance applications. The 3-inch inlet to 2.5-inch outlet configuration covers a frequently encountered sizing mismatch in both OEM and aftermarket exhaust work.

Constructed from stainless steel, this reducer resists corrosion and oxidation from high-temperature exhaust gases and road salt exposure. The band-bolt clamp design provides secure, repeatable fastening without welding, allowing for field installation and future removal if needed. At 3.45 pounds with compact dimensions (5.6 x 5.5 x 11.8 inches), the kit is portable and straightforward to install in tight engine compartments. The natural finish stainless material maintains aesthetic consistency with modern exhaust system components while delivering the thermal and corrosion resistance required in harsh operating environments.

This adapter serves builders, technicians, and vehicle owners undertaking custom exhaust projects where OEM or performance piping diameter transitions don't align. It's essential for manifold-to-pipe connections, turbo outlet sizing, or header-to-secondary-piping applications where a mechanical, non-welded joint is preferred. The collector adapter reduces fabrication time and cost compared to custom-welded solutions while maintaining full flow capability and durability under continuous operation.

HOOKER is recognized in the exhaust systems market for quality tubing and header components. The 3-inch to 2.5-inch size transition is a standard requirement in many domestic and import performance builds, making this SKU a reliable stock item for shops and serious enthusiasts managing multiple vehicle projects. Stainless construction ensures multi-season durability whether the system operates in salt-air environments, winter road conditions, or high-performance track applications.