MagnaFlow California Grade CARB Direct-Fit Catalytic Converter - Buick LaCrosse / Cadillac XTS / Chevrolet Impala 2010-2019

MagnaFlow's 551401 is a California Grade CARB compliant direct fit catalytic converter built to replace the factory unit with no cutting or welding. The spun body is 16 gauge 409 stainless steel with 308 stainless MIG welds and 410 stainless barbed hangers, and a single laser fusion weld replicates the OE spun body design to reduce the chance of a leak. Mandrel bent tubing preserves the factory exhaust geometry, so flow, fuel economy, and engine operation stay where the manufacturer set them, and the compact low mass design reaches light-off temperature quickly. The converter carries CARB Executive Order D-193-200, which makes it legal to install in California and other CARB restricted states, and it is also New York certified. Gaskets and hardware are included in the box.

Specifications

This part fits:

Shipping

• In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
• Standard, expedited, and overnight options at checkout.
• Oversized items ship by freight and take longer.
• Backordered items ship as soon as stock lands — contact us for lead times.
• International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

• 30-day returns on new, uninstalled items in original packaging with all hardware.
• Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
• Installed or used parts can’t be returned — confirm fitment before you install.
• Special orders and custom items are final sale.
• Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Refund Policy