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.
Specifications
| 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 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
