Magnaflow 2011 Chevrolet Silverado 2500 HD 6.0L Direct Fit Converter

Heavy-duty trucks push serious exhaust volume through their catalytic converters, and when one fails on your 2011 Silverado or Sierra HD, you need a replacement that can handle the job. MagnaFlow 5551252 is a CARB-compliant direct-fit converter for the 2011 Chevrolet Silverado 2500 HD, Silverado 3500 HD, GMC Sierra 2500 HD, and GMC Sierra 3500 HD with the 6.0L engine.

HD Truck Coverage

One part number covers both the 2500 HD and 3500 HD variants from Chevrolet and GMC. MagnaFlow uses 3D scanning to match the factory exhaust geometry, so the converter bolts into all four applications without cutting or welding. OE-sized barbed exhaust hangers in 410 stainless steel help reduce noise and vibration under the truck.

Built for Heavy Duty

These trucks tow, haul, and work hard. The converter body is 16-gauge 409 stainless steel tubing with 308 stainless steel MIG welds, built to handle the higher exhaust temperatures and volume that come with the 6.0L under load. The spun body design and single laser fusion weld keep the seam sealed tight.

Two Torca Clamps Included

MagnaFlow includes two Torca AccuSeal exhaust clamps that distribute clamping force evenly around the pipes, preventing distortion that can lead to leaks. This is especially important on HD trucks where exhaust vibration under load can work connections loose over time.

CARB Compliant Nationwide

Legal for sale and installation in all 50 states, including California, Colorado, New York, and Maine. Verify your truck's Executive Order and Engine Family Number before installing.