Dynomax 39447 Exhaust System Kit

Dynomax Ultra Flo Welded Cat-Back Exhaust

The Dynomax Ultra Flo Welded Single System is a stainless steel cat-back exhaust kit built for the 2005-2015 Toyota Tacoma. Part number 39447 uses a straight-through muffler design and mandrel-bent piping to support freer exhaust flow while maintaining a deep performance tone.

For Tacoma owners looking for a bolt-on exhaust upgrade, this system combines welded stainless construction with a single-exit layout and a round tip shape. It is a fitment-specific solution for 2005-2015 Toyota Tacoma models with Double Cab or Access Cab configurations.

Key Features

• Fits 2005-2015 Toyota Tacoma, with Double Cab or Access Cab
• Cat-back exhaust system with single exhaust layout
• Stainless steel pipe and muffler construction
• Straight-through Ultra Flo Welded muffler design
• Mandrel-bent piping for consistent exhaust path geometry
• Round tip shape with angle exit style
• Flanged intermediate pipe, muffler, tail pipe, clamps, and gasket listed in kit contents
• Part number 39447

Product Details

Dynomax Ultra Flo Welded is the brand’s performance exhaust line focused on welded stainless construction and straight-through muffler architecture. This system is engineered for the Toyota Tacoma platform and is listed as a premium-grade, single cat-back exhaust with a 2.5-inch pipe diameter and 2.5-inch inlet and outlet sizing. The muffler uses Continuous Roving Fiberglass (CRF) technology to reduce interior resonance while preserving a deeper exhaust note.

Part number 39447 is a direct-fit exhaust system for Tacoma drivers who want a cleaner exhaust path, stainless durability, and a performance-oriented sound profile. It is also listed as emissions-legal for the covered application. This part cross-references no listed alternate part numbers for the same application.

Common Problems This System Can Address

• Restricted exhaust flow from a factory-style system
• Excess interior resonance from an aggressive exhaust note
• Corrosion concerns on aging exhaust components
• Need for a direct-fit cat-back replacement on a Toyota Tacoma
• Worn or damaged intermediate pipe, muffler, or tail pipe sections

Installation Notes

This exhaust system is designed for bolt-on installation on the specified Tacoma fitment. Confirm cab configuration before ordering, since the listed application is for Double Cab and Access Cab models only. The system uses band-style clamping and includes a gasket in the kit contents. No oxygen sensor bung is included.

Fits 2005-2015 Toyota Tacoma, N/A, with Double Cab; with Access Cab.

Quality Assurance

Dynomax backs Ultra Flo Welded mufflers with a Limited Lifetime Warranty and a 90-Day Performance & Sound Guarantee. The welded stainless construction and straight-through design are part of the Ultra Flo Welded product line’s focus on durability and consistent exhaust performance.