DYNOMAX 21172 Dynomax 21172 Heavy-Duty Muffler, 4-Inch Center Inlet and Outlet

The Dynomax 21172 Heavy-Duty Muffler is designed for universal exhaust system applications requiring durable construction and dependable performance. It features a 4-inch center inlet and 4-inch center outlet for compatibility with exhaust systems using matching tubing, while the round body supports straightforward installation in a variety of vehicle configurations. The muffler is supplied as an individual unit and is suitable for replacement or custom exhaust projects.
Built from aluminized steel, the Dynomax 21172 is engineered to withstand demanding under-vehicle conditions and help resist corrosion. Its heavy-duty construction provides lasting service for trucks, performance vehicles, work vehicles, and other applications that require a robust universal muffler. The round body measures approximately 9 inches in diameter and 22 inches long, providing a practical balance of capacity and installation flexibility without listing vehicle-specific fitment.
The Dynomax 21172 Heavy-Duty Muffler offers a reliable solution for exhaust system repairs and upgrades where a 4-inch inlet and outlet are required. Verify available clearance, inlet and outlet alignment, tubing size, and mounting requirements before installation to ensure proper fitment. With its aluminized steel construction and universal design, this Dynomax muffler is built to deliver consistent exhaust system performance in demanding applications.

Features:

• Brand: Dynomax

• Part Number: 21172

• Muffler Type: Heavy-duty universal exhaust muffler

• Inlet Size: 4-inch center inlet

• Outlet Size: 4-inch center outlet

• Body Style: Round body

• Construction: Aluminized steel

• Application: Universal fit for compatible exhaust systems

• Package Quantity: Sold individually