Collector Reducers - 1pr 3-1/2in to 3-1/2in

The Patriot Exhaust Collector Reducer—3-1/2 inch to 3-1/2 inch—is a precision-engineered intake manifold transition component designed to optimize flow characteristics in custom exhaust system builds. This pair of reducers delivers the engineering control needed in high-performance automotive applications where precise diameter matching prevents turbulence and maintains back-pressure efficiency. The 3-bolt flange design ensures reliable, repeatable fitment across multiple installation cycles.

Construction from steel with zinc oxide finish provides corrosion resistance critical in both street and performance environments. The 3.55-pound pair includes all necessary gaskets and hardware—no additional fasteners or sealing components required. The 6.5 x 6.5 x 8-inch dimensions reflect a compact design that fits tight engine bay constraints common in restomod and engine swap applications. The zinc oxide coating resists surface rust from moisture exposure and thermal cycling, extending component lifespan without requiring secondary protective coatings.

This reducer suits builders prioritizing flow optimization and bolt-on convenience. Buyers working on intake manifold modifications, engine conversions, or custom exhaust fabrication will find the included gaskets and hardware essential for immediate installation. The paired set covers typical dual-runner applications where symmetric flow balance is necessary. Verify 3-bolt flange compatibility with your specific manifold casting before ordering.

Patriot Exhaust components are recognized in performance automotive circles for dimensional accuracy and material consistency. The zinc oxide finish sits between raw steel and premium coatings in cost and protection, appropriate for engine compartment exposure where maximum heat shielding is not required.