This is the close-coupled converter on bank 1 at the front of the engine, not the underbody unit, which is a separate part on this car. The body is spun round stainless steel over a ceramic substrate and only 14.25 inches long, with two inlet flanges, a flange outlet and a single post converter sensor port. Outlet mounting hardware is included, three split lock washers and five bolts, and it bolts in with no cutting or welding. It carries CARB Executive Order D-193-200 and is legal for sale and installation in all 50 states.
Specifications
| Type | California-grade direct-fit catalytic converter (CARB compliant) |
| Position | Primary (front, close-coupled, bank 1) |
| Material | Stainless steel spun round body and tubing, ceramic substrate |
| Inlet | Flange, quantity 2 |
| Outlet | Flange |
| Overall Length | 14.25 in |
| Sensor Ports | 1 (post converter) |
| Included | Outlet mounting hardware: 3 split lock washers, 5 bolts |
| Installation | Bolt-on direct fit, no cutting or welding |
| Emissions Compliance | CARB compliant, Executive Order D-193-200. Legal for sale in all 50 states including California, Colorado, New York and Maine. |
| Warranty | Limited 5 year / 50,000 mile construction; limited 5 year / 50,000 mile emissions |
| Part Number | 551163 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2013-2014 | Nissan | Altima | S |
| 2007-2009 | Nissan | Altima | SE |
| 2007-2009,2013-2014 | Nissan | Altima | SL |
| 2010-2012 | Nissan | Altima | SR |
| 2013-2014 | Nissan | Altima | SV |
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
