Magnaflow 12158 2.5" SS Muffler 14x5x8 Oval Universal Fit

Vehicle Fitment

• Universal fit - designed for custom and replacement exhaust systems; not vehicle-specific

Features

• 14" x 5" x 8" stainless steel performance muffler body
• 2.5" inlet and 2.5" outlet for common exhaust pipe sizes
• Straight-through perforated core for free-flowing exhaust dynamics
• Acoustic packing and stainless mesh for deep, smooth Magnaflow tone
• 100% stainless steel construction resists corrosion and heat
• Reversible/bi-directional design for flexible exhaust routing
• Improves exhaust flow and reduces backpressure compared to restrictive stock mufflers
• Ideal for performance upgrades or custom exhaust builds

Specifications

• Part Number: Magnaflow 12158
• Type: Performance straight-through muffler
• Body Dimensions: 14" length x 5" height x 8" width
• Inlet Diameter: 2.5"
• Outlet Diameter: 2.5"
• Material: Stainless steel (SS)
• Design: Straight-through perforated core
• Installation: Universal - weld-on or clamp-on required

Included Components

• 1x Magnaflow 2.5" stainless steel performance muffler (12158)

Product Description

The Magnaflow 12158 universal performance muffler is engineered to enhance exhaust flow and deliver the deep, smooth tone characteristic of Magnaflow products. With a robust 14" x 5" x 8" stainless steel body and a straight-through perforated core, this muffler minimizes backpressure while promoting efficient exhaust gas expansion - improving overall exhaust dynamics compared to many restrictive factory units.

Designed with 2.5" inlet and outlet diameters, the 12158 integrates well into common exhaust piping configurations used in performance and custom applications. Its durable stainless steel construction provides corrosion and heat resistance for long-lasting service life, while the reversible, bi-directional layout offers versatile installation options. Ideal for custom exhaust systems or replacement applications on a variety of builds, this universal muffler requires professional installation (welding or clamp-on) for proper integration.