This two chamber design incorporates Flowmaster's patented Delta Flow technology. The Delta deflectors generate increased scavenging for better performance and reduced interior sound. Milder exterior tone and reduced interior resonance over Original 40 series. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.Features: Durable Fully Welded 16 Gauge Aluminized Steel 3 Year Limited Warranty Aggressive To Moderate Exterior Exhaust Note Reduced Interior Resonance Excellent Street/Strip And Off Road Application No Internal Packing To Blowout Race Proven Patented Delta Flow® TechnologyApplications include: Bel Air, Biscayne, Chevy Ii, Del Ray, El Camino, Escort, Impala, Neon, Nova, Probe, Thunderbird, Chevrolet, Dodge, Ford, Plymouth, 2005, 2004, 2003, 2002, 2001 Product Description: 40 Series Delta Flow Muffler, 2.00" IN (C) / OUT (O): ea, 16 Gauge Aluminized SteelPit Stop USA offers Flowmaster 40 Series Delta Flow Muffler - 2" Center Inlet / Offset Outlet 942042 at low everyday prices. Be sure to check out all our products from Flowmaster including Flowmaster 40 Series Delta Flow Mufflers.