Magnaflow 10-11 Buick LaCrosse 3.6L Direct Fit Converter

You're looking at the Magnaflow California Grade CARB Compliant Direct-Fit Catalytic Converter, part number 551300. This is designed specifically for your 2010-2011 Buick LaCrosse with the 3.6L engine. What you get in the box are the essential gaskets and hardware needed for installation, including three nuts, three flat washers, three bolts, and one crush ring gasket. This means you won't have to reuse old, corroded factory parts and can achieve a solid seal right away.

Magnaflow built this converter with free-flowing, mandrel-bent tubing and a body made from highly corrosion-resistant stainless steel, specifically 16-gauge 409 stainless steel for the tubing and 308 stainless steel for the welds. This construction is meant to last and resist rust. The design replicates the original equipment's spun body, using a single laser fusion weld to greatly reduce the chance of leaks. Its compact, low-mass design also helps with thermal efficiency. Because it's a direct-fit unit, installation is straightforward, with no cutting or welding required, making it a job you can often do yourself with the right tools.

This converter is built to meet or exceed California Air Resource Board (CARB) requirements. It's undergone additional testing to comply with CARB guidelines, making it legal for use in California and other states with similar emissions restrictions. Magnaflow uses advanced 3D scanning during their research and development to ensure this part fits and functions just like the original equipment, helping to keep your check engine light off and your vehicle running cleanly.