MagnaFlow CARB-Grade California-compliant direct-fit catalytic converter (5551221) for the 2006-2007 Chevrolet Trailblazer 4.2L and 2006-2007 GMC Envoy 4.2L, plus Buick Rainier and Isuzu Ascender applications. 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. OE-sized 410 stainless barbed exhaust hangers reduce noise and vibration. CARB EO compliant for legal use in California and CARB states for the listed vehicles.
| Type | Direct-fit catalytic converter (spun body) |
| Grade | CARB (California Grade) |
| Material | 16-gauge 409 stainless steel |
| Hardware | Gaskets and hardware included |
| Emissions | CARB compliant (CA legal) |
| Part Number | 5551221 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2006-2007 | Buick | Rainier | CXL |
| 2006-2007 | Chevrolet | Trailblazer | LS |
| 2006-2007 | Chevrolet | Trailblazer | LT |
| 2006-2007 | GMC | Envoy | SLE |
| 2006-2007 | GMC | Envoy | SLT |
| 2006 | Isuzu | Ascender | Base |
| 2006 | Isuzu | Ascender | LS |
| 2007 | Isuzu | Ascender | S |
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.
