MagnaFlow 21-177 OEM Grade Direct-Fit Catalytic Converter for 2010-2016 Buick Chevrolet Impala LaCrosse Malibu Regal

Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 21-177. Features free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction. Install with proper tools, no cutting or welding required. Uses latest 3D scanning for perfect OE fit and function. Single laser fusion weld reduces leak risk; compact low-mass design improves thermal efficiency. Interchanges with OE parts 13229529, 20912670, 20960849, 20973114, 20991687, 22935121, 22935125. Meets or exceeds Federal EPA emissions requirements for OBDII vehicles. Not legal for sale or installation in California, Colorado or New York.

Technical Specs:

• High strength 16 gauge 409 stainless steel tubing
• Durable 308 stainless steel MIG welds
• Mandrel bent tubing retains OEM geometry
• OE-sized barbed exhaust hangers (410 stainless steel)
• Includes essential gaskets and hardware
• Replicates OEM flow dynamics for factory performance and fuel efficiency