MagnaFlow OEM-Grade Federal/EPA-compliant direct-fit catalytic converter (51578) for the 2009-2013 Chevrolet Silverado 1500 5.3L and 2009-2013 GMC Sierra 1500 (also fits Avalanche, Tahoe, Suburban, Yukon and Escalade). Spun-body 409 stainless construction with a single laser-fusion weld replicates the OE design for smooth flow and a leak-resistant seal; installs with no cutting or welding and includes gaskets and hardware. Federal/EPA compliant (not for sale in California); OBDII.
| Type | Direct-fit catalytic converter |
| Grade | OEM Grade |
| Material | 409 stainless steel (spun body) |
| Hardware | Gaskets & hardware included |
| OEM Replacement | 19418941, 15905948 |
| Emissions | Federal/EPA compliant (not for sale in California) |
Documents: Technical Bulletin (PDF) | Technical Bulletin (PDF) | Technical Bulletin (PDF)
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2010-2013 | Cadillac | Escalade | Hybrid |
| 2010-2013 | Cadillac | Escalade | Hybrid Platinum |
| 2013 | Chevrolet | Avalanche | Black Diamond LS |
| 2013 | Chevrolet | Avalanche | Black Diamond LT |
| 2013 | Chevrolet | Avalanche | Black Diamond LTZ |
| 2009-2012 | Chevrolet | Avalanche | LS |
| 2009-2012 | Chevrolet | Avalanche | LT |
| 2009-2012 | Chevrolet | Avalanche | LTZ |
| 2009-2013 | Chevrolet | Silverado 1500 | Hybrid |
| 2009-2013 | Chevrolet | Silverado 1500 | LS |
| 2009-2013 | Chevrolet | Silverado 1500 | LT |
| 2009-2013 | Chevrolet | Silverado 1500 | LTZ |
| 2009-2013 | Chevrolet | Silverado 1500 | WT |
| 2010-2013 | Chevrolet | Silverado 1500 | XFE |
| 2009-2014 | Chevrolet | Suburban 1500 | LS |
| 2009-2014 | Chevrolet | Suburban 1500 | LT |
| 2009-2014 | Chevrolet | Suburban 1500 | LTZ |
| 2010-2013 | Chevrolet | Tahoe | Hybrid |
| 2009-2014 | Chevrolet | Tahoe | LS |
| 2009-2014 | Chevrolet | Tahoe | LT |
| 2009-2014 | Chevrolet | Tahoe | LTZ |
| 2009-2014 | Chevrolet | Tahoe | PPV |
| 2012-2014 | Chevrolet | Tahoe | SSV |
| 2009-2013 | GMC | Sierra 1500 | Hybrid |
| 2009-2013 | GMC | Sierra 1500 | SL |
| 2009-2013 | GMC | Sierra 1500 | SLE |
| 2009-2013 | GMC | Sierra 1500 | SLT |
| 2009-2013 | GMC | Sierra 1500 | WT |
| 2010-2013 | GMC | Sierra 1500 | XFE |
| 2010-2013 | GMC | Yukon | Denali Hybrid |
| 2010-2013 | GMC | Yukon | Hybrid |
| 2009-2014 | GMC | Yukon | SLE |
| 2009-2014 | GMC | Yukon | SLT |
| 2009-2014 | GMC | Yukon XL 1500 | SLE |
| 2009-2014 | GMC | Yukon XL 1500 | SLT |
