Magnaflow 12256 2.5" SS Muffler 18x5x8 Oval Universal Performance

Vehicle Fitment

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

Features

• 18" x 5" x 8" stainless steel performance muffler body
• 2.5" inlet and 2.5" outlet (outside circumference) for common exhaust piping
• Straight-through perforated core for free-flowing exhaust and reduced backpressure
• Acoustic packing and stainless mesh provide deep, smooth Magnaflow tone
• 100% stainless steel construction resists corrosion and high temperatures
• Reversible/bi-directional design allows flexible installation orientation
• Improves exhaust flow and sound compared to restrictive stock mufflers
• Ideal for performance upgrades, custom systems, or replacement applications

Specifications

• Part Number: Magnaflow 12256
• Type: Performance straight-through muffler
• Body Shape: Oval
• Body Dimensions: 18" length x 5" height x 8" width
• Inlet Diameter: 2.5"
• Outlet Diameter: 2.5"
• Material: Stainless steel (SS)
• Core: Perforated straight-through design
• Installation: Universal - weld-on or clamp-on required

Included Components

• 1x Magnaflow 2.5" stainless steel performance muffler (12256)

Product Description

The Magnaflow 12256 universal performance muffler is engineered to enhance exhaust flow while delivering the deep, smooth tone that Magnaflow is known for. Featuring an 18" x 5" x 8" stainless steel oval body and a straight-through perforated core, this muffler helps minimize backpressure and improve overall exhaust dynamics compared to many restrictive stock units. Its robust stainless steel construction offers excellent resistance to corrosion and high temperatures for long-lasting performance.

Designed with 2.5" inlet and outlet diameters, the 12256 integrates seamlessly with common 2.5" exhaust piping used in performance and custom systems. The reversible and bi-directional design allows flexible installation orientation, accommodating a variety of custom layouts and upgrade scenarios. Ideal for performance builds, custom exhaust systems, or replacement applications where improved flow and signature Magnaflow sound quality are desired, this universal muffler requires professional installation (weld-on or clamp-on) to ensure proper integration and performance.