Flowmaster 50 Series Delta Flow Muffler - 2-1/4 in Offset Inlet - 2-1/4 in Center Outlet - 17 x 9-3/4 x 4 in Oval Body - 23 in Long - Black Paint - Universal 842451 9210CPL Rough idle quality

Rough idle quality

Extended / Crew Cab

1968-1973 Chevrolet K20 Suburban

Ford Mustang 2007-13

In Certain Tall Deck Blocks

Flowmaster 50 Series Delta Flow Muffler - 2-1/4 in Offset Inlet - 2-1/4 in Center Outlet - 17 x 9-3/4 x 4 in Oval Body - 23 in Long - Black Paint - Universal 842451 9210CPL Rough idle qualityThe three chamber design utilizes Flowmaster's patented Delta Flow technology along with an internal tuning chamber to reduce sound inside the vehicle. Provides the same performance and exterior tone characteristics as the two chamber, but with less interior resonance. Constructed of 16 gauge 409S stainless steel and fully MIG welded for maximum durability. Features: Durable Fully Welded 409 Stainless Steel Limited Lifetime Warranty Mild to Moderate