Professional-grade exhaust connectivity meets American-made reliability. This Dynaflex 3-inch coupler is the ideal adapter for high-performance and heavy-duty exhaust systems that require a transition between pipe sizes or a protective extension.
Constructed from premium aluminized steel, this coupler offers significantly better corrosion resistance than standard raw steel. It is designed to withstand the intense heat cycles and harsh under-vehicle environments of commercial trucks and industrial equipment.
Inlet/Outlet: 3" I.D. to 3" O.D. (Inside Diameter to Outside Diameter)
Overall Length: 5.0"
Material: 16 Gauge Aluminized Steel
Origin: Made in the U.S.A.
Dual-Function Design: The I.D. end is precision-expanded to slip over standard 3" pipe, while the O.D. end is sized to slip into standard 3" I.D. mufflers or components.
Aluminized Finish: Features a protective aluminum-silicon alloy coating that prevents rust and oxidation caused by road salt and moisture.
Heavy-Duty Wall: Built to industrial standards to ensure a leak-free seal and structural integrity under heavy vibration.
Ready for Install: Perfectly round, burr-free ends for immediate welding or clamping.
| Feature | Specification |
| Brand | Dynaflex Products |
| Connection Type | I.D. to O.D. (Expansion Adapter) |
| Inlet Size | 3.0" Inside Diameter |
| Outlet Size | 3.0" Outside Diameter |
| Length | 5" Total |
| Material | Heavy Duty Aluminized Steel |
| Manufacturing | Made in USA |
Connecting a new muffler to existing 3" exhaust pipe.
Extending a tailpipe or stack.
General exhaust fabrication and repair on Class 6, 7, and 8 trucks.
Ordering Tip: This is a 3-inch nominal part. The I.D. end will have a slightly larger actual measurement (approx. 3.06") to accommodate a 3.0" pipe sliding inside of it.
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