MagnaFlow California CARB-compliant direct-fit catalytic converter (4451419) for the 1999-2003 Chevrolet Silverado 1500 4.8L and GMC Sierra 1500 (also fits Tahoe, Suburban, Yukon, Express and more — see chart). Spun-body 16-gauge 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. CARB compliant and legal for use in California and CARB states.
| Type | Direct-fit catalytic converter |
| Grade | California Grade (CARB) |
| Material | 16-gauge 409 stainless steel (spun body) |
| Hardware | Gaskets & hardware included |
| Emissions | CARB compliant (CA legal) |
Documents: Technical Bulletin (PDF)
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2005 | Chevrolet | Express 1500 | Base |
| 2005 | Chevrolet | Express 1500 | LS |
| 1999-2001,2003 | Chevrolet | Silverado 1500 | Base |
| 1999-2001,2003 | Chevrolet | Silverado 1500 | LS |
| 1999-2001,2003 | Chevrolet | Silverado 1500 | LT |
| 2003 | Chevrolet | Silverado 1500 | WT |
| 1999-2000 | Chevrolet | Silverado 2500 | Base |
| 1999-2000 | Chevrolet | Silverado 2500 | LS |
| 1999-2000 | Chevrolet | Silverado 2500 | LT |
| 2000-2001 | Chevrolet | Suburban 1500 | Base |
| 2000-2001 | Chevrolet | Suburban 1500 | LS |
| 2000-2001 | Chevrolet | Suburban 1500 | LT |
| 2000-2001 | Chevrolet | Tahoe | Base |
| 2000-2001,2003 | Chevrolet | Tahoe | LS |
| 2000-2001,2003 | Chevrolet | Tahoe | LT |
| 2003 | Chevrolet | Tahoe | Z71 |
| 2003 | GMC | Sierra 1500 | Base |
| 1999-2001,2003 | GMC | Sierra 1500 | SL |
| 1999-2001,2003 | GMC | Sierra 1500 | SLE |
| 1999-2001,2003 | GMC | Sierra 1500 | SLT |
| 2003 | GMC | Sierra 1500 | WT |
| 2000 | GMC | Sierra 2500 | SL |
| 2000 | GMC | Sierra 2500 | SLE |
| 2000 | GMC | Sierra 2500 | SLT |
| 2000-2001,2003 | GMC | Yukon | SLE |
| 2000-2001,2003 | GMC | Yukon | SLT |
| 2000-2001 | GMC | Yukon XL 1500 | SLE |
| 2000-2001 | GMC | Yukon XL 1500 | SLT |
