MagnaFlow's California Grade converter is a CARB compliant replacement for the driver side converter on the VQ series V6 and bolts into the factory location without cutting or welding. The 19.25 in body carries an attached aluminized steel heat shield over a ceramic substrate, built from 16 gauge 409 stainless steel tubing with 308 stainless steel MIG welds, with flange inlet and outlet connections and one post converter oxygen sensor port. OE sized barbed 410 stainless steel hangers ship in the box along with a crush ring gasket, a flange gasket, six flat washers, four bolts, and four nuts. CARB Executive Order D-193-200 makes it legal for installation in all 50 states.
Specifications
| Type | California Grade CARB compliant direct-fit catalytic converter |
| Position | Left (driver side) |
| Engine | 3.5L and 3.7L V6 |
| Material | 16 gauge 409 stainless steel tubing, 308 stainless steel MIG welds |
| Body | Stainless steel with attached aluminized steel heat shield |
| Substrate | Ceramic |
| Overall Length | 19.25 in |
| Inlet / Outlet | Flange / flange |
| Oxygen Sensor Ports | 1 (post converter) |
| Hangers | Included, OE sized barbed 410 stainless steel |
| Emissions | CARB compliant, Executive Order D-193-200; New York certified; legal in all 50 states |
| Included Hardware | (1) crush ring gasket, (1) flange gasket, (6) flat washers, (4) bolts, (4) nuts |
| Quantity | 1 |
| Pairs With | MagnaFlow 551144, the passenger side converter for the same application |
| Part Number | 551143 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2010 | INFINITI | EX35 | Base |
| 2010 | INFINITI | EX35 | Journey |
| 2013 | INFINITI | EX37 | Base |
| 2013 | INFINITI | EX37 | Journey |
| 2007-2008 | INFINITI | G35 | Base |
| 2007-2008 | INFINITI | G35 | Journey |
| 2007-2008 | INFINITI | G35 | Sport |
| 2007-2008 | INFINITI | G35 | X |
| 2008-2013 | INFINITI | G37 | Base |
| 2011-2013 | INFINITI | G37 | IPL |
| 2008-2013 | INFINITI | G37 | Journey |
| 2008-2013 | INFINITI | G37 | Sport |
| 2009-2013 | INFINITI | G37 | X |
| 2011-2013 | INFINITI | M37 | Base |
| 2011-2013 | INFINITI | M37 | X |
| 2015 | INFINITI | Q40 | Base |
| 2014-2015 | INFINITI | Q50 | Base |
| 2014-2015 | INFINITI | Q50 | Premium |
| 2014-2015 | INFINITI | Q50 | Sport |
| 2014-2015 | INFINITI | Q60 | Base |
| 2014-2015 | INFINITI | Q60 | IPL |
| 2014-2015 | INFINITI | Q60 | Journey |
| 2014-2015 | INFINITI | Q60 | S |
| 2015 | INFINITI | Q60 | S Limited |
| 2014-2015 | INFINITI | Q70 | 3.7 |
| 2015 | INFINITI | Q70L | 3.7 |
| 2014-2015 | INFINITI | QX50 | Base |
| 2014-2015 | INFINITI | QX50 | Journey |
| 2007-2008 | Nissan | 350Z | Base |
| 2007-2009 | Nissan | 350Z | Enthusiast |
| 2007-2009 | Nissan | 350Z | Grand Touring |
| 2007-2008 | Nissan | 350Z | Nismo |
| 2007-2009 | Nissan | 350Z | Touring |
| 2010 | Nissan | 370Z | 40th Anniversary Edition |
| 2009-2018 | Nissan | 370Z | Base |
| 2018 | Nissan | 370Z | Heritage Edition |
| 2009-2017 | Nissan | 370Z | Nismo |
| 2015-2018 | Nissan | 370Z | Nismo Tech |
| 2015-2018 | Nissan | 370Z | Sport |
| 2015-2018 | Nissan | 370Z | Sport Tech |
| 2009-2018 | Nissan | 370Z | Touring |
| 2015-2018 | Nissan | 370Z | Touring Sport |
Shipping
- Orders placed before 3 PM EST typically ship the same business day. Larger items ship within 1 to 3 business days.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Special order items follow a lead time we confirm with you individually before the order is committed.
- Backordered items ship as soon as stock lands. Lead times are manufacturer estimates and can change. Contact us for current ETAs.
- Need to cancel? Email us right away. Cancellations are not guaranteed once an order is in process. In-stock orders cancel free before they ship; a 6% fee applies only to confirmed backorders and special orders.
- 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 days from delivery to request and ship back a return on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee on the item price before tax and shipping. Shipping is not refunded in either direction. All waived if the item is defective or we made the error.
- Fitment guaranteed: select your vehicle above, or confirm fitment with us in writing before you order. If the part shows as a fit and it is wrong, the return is on us, even after installation. Otherwise, installed or used parts cannot be returned.
- Final sale: special orders, coilovers, electronics, engine internals, turbochargers, superchargers and turbo kits, unless defective or we sent the wrong item.
- Product images may be representative. The SKU and specifications in the listing are what ships.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Returns & Refunds · Warranty
