The MagnaFlow 557417 is a California Grade CARB compliant direct-fit catalytic converter that replaces the original equipment converter with no cutting or welding required. It is built from 16 gauge 409 stainless steel mandrel-bent tubing for smooth exhaust flow and long service life, with OE-sized 410 stainless steel barbed exhaust hangers and durable 308 stainless steel MIG welds. A single laser fusion weld replicates the OE design to reduce the chance of leaks, while the compact low-mass body improves thermal efficiency. It carries CARB Executive Order D-193-200 for legal installation in California and CARB restricted states, and ships with two 2-bolt gaskets, two nuts, and two bolts.
| Type | California Grade CARB Compliant Direct-Fit Catalytic Converter |
| Material | 16 Gauge 409 Stainless Steel |
| CARB EO Number | D-193-200 |
| Quantity | 1 |
| Part Number | 557417 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2016-2019 | Cadillac | XTS | Base |
| 2016-2019 | Cadillac | XTS | Livery |
| 2016-2019 | Cadillac | XTS | Luxury |
| 2016-2019 | Cadillac | XTS | Platinum |
| 2016 | Cadillac | XTS | Premium |
| 2017-2019 | Cadillac | XTS | Premium Luxury |
| 2015-2017 | Chevrolet | Impala | LS |
| 2014-2017 | Chevrolet | Impala | LT |
| 2014-2016 | Chevrolet | Impala | LTZ |
| 2017 | Chevrolet | Impala | Premier |
Shipping: In-stock orders placed before 4 PM EST ship the same day, with standard, expedited, and overnight options available at checkout. Backordered items ship as soon as our distributor restocks — contact us for lead times. See the full Shipping Policy.
Returns: 30-day returns on new, unused items in original packaging. See the full Refund Policy.
