MagnaFlow CARB-grade CARB-compliant direct-fit catalytic converter (4451471) for the 1996-2000 Chevrolet and GMC C2500, K2500, C3500, K3500 and 2500 Suburban 7.4L. Spun-body mandrel-bent 409 stainless tubing with a single laser-fusion weld replicates the OE design for smooth flow and a leak-resistant seal; it bolts in with no cutting or welding, and the necessary gaskets and hardware are included. Meets or exceeds CARB requirements for legal installation in California and CARB states.
Specifications
| Type | Direct-fit catalytic converter |
| Grade | California Grade (CARB compliant) |
| Material | 409 stainless steel (spun body) |
| Hardware | Gaskets and hardware included |
| Emissions | CARB compliant (legal in California and CARB states) |
| Part Number | 4451471 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1996-1997,1999-2000 | Chevrolet | C2500 | Base |
| 1996-1998 | Chevrolet | C2500 | Cheyenne |
| 1999-2000 | Chevrolet | C2500 | LS |
| 1996-1998 | Chevrolet | C2500 | Silverado |
| 1998 | Chevrolet | C2500 | WT |
| 1996-1999 | Chevrolet | C2500 Suburban | Base |
| 1996-1999 | Chevrolet | C2500 Suburban | LS |
| 1996-1997 | Chevrolet | C2500 Suburban | LT |
| 1996-1997,1999-2000 | Chevrolet | C3500 | Base |
| 1996-1998 | Chevrolet | C3500 | Cheyenne |
| 1999-2000 | Chevrolet | C3500 | LS |
| 1996-1998 | Chevrolet | C3500 | Silverado |
| 1996-1997,1999-2000 | Chevrolet | K2500 | Base |
| 1996-1998 | Chevrolet | K2500 | Cheyenne |
| 1999-2000 | Chevrolet | K2500 | LS |
| 1996-1998 | Chevrolet | K2500 | Silverado |
| 1998 | Chevrolet | K2500 | WT |
| 1996-1999 | Chevrolet | K2500 Suburban | Base |
| 1996-1999 | Chevrolet | K2500 Suburban | LS |
| 1996-1997 | Chevrolet | K2500 Suburban | LT |
| 1996-1997,1999-2000 | Chevrolet | K3500 | Base |
| 1996-1998 | Chevrolet | K3500 | Cheyenne |
| 1999-2000 | Chevrolet | K3500 | LS |
| 1996-1998 | Chevrolet | K3500 | Silverado |
| 1996-2000 | GMC | C2500 | Sierra SL |
| 1996-2000 | GMC | C2500 | Sierra SLE |
| 1996-2000 | GMC | C2500 | Sierra SLT |
| 1996-1999 | GMC | C2500 Suburban | Base |
| 1996-1999 | GMC | C2500 Suburban | SLE |
| 1996-1999 | GMC | C2500 Suburban | SLT |
| 1996-2000 | GMC | C3500 | Sierra SL |
| 1996-2000 | GMC | C3500 | Sierra SLE |
| 1996-2000 | GMC | C3500 | Sierra SLT |
| 1996-2000 | GMC | K2500 | Sierra SL |
| 1996-2000 | GMC | K2500 | Sierra SLE |
| 1996-2000 | GMC | K2500 | Sierra SLT |
| 1996-1999 | GMC | K2500 Suburban | Base |
| 1996-1999 | GMC | K2500 Suburban | SLE |
| 1996-1999 | GMC | K2500 Suburban | SLT |
| 1996-2000 | GMC | K3500 | Sierra SL |
| 1996-2000 | GMC | K3500 | Sierra SLE |
| 1996-2000 | GMC | K3500 | Sierra SLT |
Shipping
- In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Backordered items ship as soon as stock lands — contact us for lead times.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30-day returns on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
- Installed or used parts can’t be returned — confirm fitment before you install.
- Special orders and custom items are final sale.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Refund Policy
