The MagnaFlow 6511128 is a California Grade, CARB-compliant direct-fit front (radiator-side, Bank 2) catalytic converter for the 3.5L V6. It is built from 16-gauge 409 stainless steel with mandrel-bent tubing, and a single laser fusion weld reduces the chance of a leak while the compact, low-mass design improves thermal efficiency. OE-style 410 stainless barbed hangers and 308 stainless MIG welds add durability, and the flange gasket, nine bolts, and nine nuts needed for installation are included for a bolt-in fit with no cutting or welding. It is CARB compliant and legal for sale and use in California and CARB states on the listed vehicles.
| Type | Direct-Fit Catalytic Converter (California Grade) |
| Position | Front (radiator side, Bank 2) |
| Material | 16-gauge 409 stainless steel |
| Emissions | CARB compliant (California legal) |
| Included Hardware | (1) Flange gasket, (9) bolts, (9) nuts |
| Quantity | 1 |
| Part Number | 6511128 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2016-2018 | Nissan | Altima | SL |
| 2016-2017 | Nissan | Altima | SR |
| 2021 | Nissan | Maxima | 40th Anniversary Edition |
| 2016-2021 | Nissan | Maxima | Platinum |
| 2020 | Nissan | Maxima | Platinum Reserve |
| 2016-2020 | Nissan | Maxima | S |
| 2016-2020 | Nissan | Maxima | SL |
| 2016-2021 | Nissan | Maxima | SR |
| 2016-2021 | Nissan | Maxima | SV |
