Dynaflex 3.5" to 3" Exhaust Reducer Coupler | 16GA Carbon Steel | Made in USA

Transition your exhaust system with professional-grade hardware. This Dynaflex reducing coupler is the industry choice for heavy-duty trucks, industrial machinery, and custom fabrication. Built from rugged 16-gauge carbon steel, it provides a secure and durable bridge between 3.5-inch and 3-inch exhaust components.

Product Overview

This 6-inch long reducer is engineered for maximum airflow efficiency and structural integrity. Unlike light-duty consumer adapters, this Made in the U.S.A. component features heavy-wall construction to withstand the high-heat cycles and vibrations common in commercial diesel and industrial applications.

• Configuration: 3.5" O.D. to 3.0" I.D.

• Overall Length: 6.0"

• Material: 16 Gauge (.065") Carbon Steel

• Origin: Proudly Made in the U.S.A.

Key Features

• Precision Fitment: * The 3.5" O.D. end is designed to slip inside a standard 3.5" I.D. component (like a muffler inlet or larger coupler).

  • The 3.0" I.D. end is expanded to slip over a standard 3.0" O.D. exhaust pipe.

• Weld-Ready Carbon Steel: Features a raw, unfinished surface that is ideal for immediate welding. No need to grind off aluminized or zinc coatings before you start.

• Heavy-Duty Durability: 16GA thickness ensures the reducer won't warp or burn through under the extreme thermal stress of heavy-duty engine operation.

• Dynaflex Quality: Manufactured to strict industrial tolerances, ensuring perfectly round ends and a smooth taper for better exhaust flow.

Specifications Table

Applications

• Class 7 & 8 Trucks: Adapting turbo outlets, stacks, or muffler connections.

• Custom Fabrication: Creating custom exhaust headers or downpipes.

• Industrial: Connecting generators or heavy equipment exhaust venting.

Tech Tip: Because this is raw carbon steel, minor surface oxidation may be present. This is normal and does not affect the quality or weldability of the part. For a finished look, we recommend applying a high-temperature exhaust paint after installation.