MagnaFlow's California Grade Direct-Fit Catalytic Converter 4551642 is a CARB-compliant emissions replacement that installs in the driver-side position with no cutting or welding required. It uses a spun body with a single laser fusion weld to reduce leak points, high-strength 16 gauge 409 stainless steel tubing, 410 stainless barbed hangers, and 308 stainless MIG welds for long service life. The converter carries CARB Executive Order D-193-184 and is legal for sale and installation in all 50 states, and the necessary gaskets and hardware are included.
| Type | Direct-Fit Catalytic Converter (California Grade CARB Compliant) |
| Position | Driver Side |
| Material | 409 Stainless Steel (16 Gauge) |
| Emissions | CARB Compliant, EO# D-193-184 (legal for sale in all 50 states) |
| Part Number | 4551642 |
Documents: Technical Bulletin (PDF)
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2003 | Chevrolet | Silverado 2500 HD | Base |
| 2003,2006 | Chevrolet | Silverado 2500 HD | LS |
| 2003,2006 | Chevrolet | Silverado 2500 HD | LT |
| 2003,2006 | Chevrolet | Silverado 2500 HD | WT |
| 2007 | Chevrolet | Silverado 2500 HD Classic | LS |
| 2007 | Chevrolet | Silverado 2500 HD Classic | LT |
| 2007 | Chevrolet | Silverado 2500 HD Classic | WT |
| 2003 | Chevrolet | Silverado 3500 | Base |
| 2003,2006 | Chevrolet | Silverado 3500 | LS |
| 2003,2006 | Chevrolet | Silverado 3500 | LT |
| 2006 | Chevrolet | Silverado 3500 | WT |
| 2007 | Chevrolet | Silverado 3500 Classic | LS |
| 2007 | Chevrolet | Silverado 3500 Classic | LT |
| 2007 | Chevrolet | Silverado 3500 Classic | WT |
| 2003 | GMC | Sierra 2500 HD | Base |
| 2006 | GMC | Sierra 2500 HD | SL |
| 2003,2006 | GMC | Sierra 2500 HD | SLE |
| 2003,2006 | GMC | Sierra 2500 HD | SLT |
| 2003,2006 | GMC | Sierra 2500 HD | WT |
| 2007 | GMC | Sierra 2500 HD Classic | SL |
| 2007 | GMC | Sierra 2500 HD Classic | SLE |
| 2007 | GMC | Sierra 2500 HD Classic | SLT |
| 2007 | GMC | Sierra 2500 HD Classic | WT |
| 2003 | GMC | Sierra 3500 | Base |
| 2006 | GMC | Sierra 3500 | SL |
| 2003,2006 | GMC | Sierra 3500 | SLE |
| 2003,2006 | GMC | Sierra 3500 | SLT |
| 2006 | GMC | Sierra 3500 | WT |
| 2007 | GMC | Sierra 3500 Classic | SL |
| 2007 | GMC | Sierra 3500 Classic | SLE |
| 2007 | GMC | Sierra 3500 Classic | SLT |
| 2007 | GMC | Sierra 3500 Classic | WT |
Shipping: In-stock orders placed before 3 PM EST ship the same day, and everything else ships within 24 hours. Standard, expedited, and overnight options are available at checkout. Backordered items ship as soon as we get them back in stock. Contact us for lead times. See the full Shipping Policy.
Returns: 30-day returns on new, unused items in original packaging. See the full Refund Policy.
