OE Quality
60-Day Returns

OP Converters OPCG4006 Catalytic Converter
Reliable Catalytic Converter for Buick, Chevrolet, and Pontiac Models
The OP Converters OPCG4006 catalytic converter is designed to meet emission standards for select Buick, Chevrolet, and Pontiac vehicles. Engineered to provide consistent performance, this catalytic converter supports the proper functioning of your vehicle's exhaust system.
- Compatible with Buick Century, Chevrolet Impala, Chevrolet Monte Carlo, and Pontiac Grand Prix
- Direct replacement catalytic converter for efficient emission control
- Manufactured by OP Converters for quality and durability
- Part number OPCG4006 ensures precise fitment for specified models
Product Details and Compatibility
This OP Converters catalytic converter (part number OPCG4006) is specifically designed for use in Buick Century, Chevrolet Impala, Chevrolet Monte Carlo, and Pontiac Grand Prix models. It serves as a direct-fit replacement part, ensuring proper installation without modifications. The converter helps reduce harmful emissions by converting exhaust gases into less harmful substances, supporting compliance with environmental regulations.
Common Applications and Problem Resolution
- Replaces faulty or damaged catalytic converters causing check engine lights
- Addresses poor engine performance related to exhaust restrictions
- Helps resolve failed emissions tests due to converter inefficiency
- Reduces excessive exhaust noise from damaged converter components
- Prevents increased fuel consumption linked to exhaust system issues
Installation Notes and Tips
Installation of the OPCG4006 catalytic converter should be performed by a qualified technician familiar with exhaust system components. Ensure the vehicle is properly supported and cooled before beginning work. Verify compatibility with your specific Buick Century, Chevrolet Impala, Chevrolet Monte Carlo, or Pontiac Grand Prix model year and engine configuration. Proper torque specifications should be followed to avoid exhaust leaks.
Quality Assurance and Warranty
OP Converters manufactures the OPCG4006 catalytic converter to meet industry standards for durability and emission control. While specific warranty details are not provided, OP Converters products typically adhere to quality guidelines to ensure reliable operation over time. For warranty information, consult the product documentation or contact the manufacturer directly.
This part fits 28 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2005 | Buick | Century | N/A | Direct Fit | ||
| 2005 | Chevrolet | Impala | 3.4L | V6 | N/A | Direct Fit |
| 2005 | Chevrolet | Monte Carlo | 3.4L | V6 | N/A | Direct Fit |
| 2004 | Buick | Century | N/A | Direct Fit | ||
| 2004 | Chevrolet | Impala | 3.4L | V6 | N/A | Direct Fit |
| 2004 | Chevrolet | Monte Carlo | 3.4L | V6 | N/A | Direct Fit |
| 2003 | Buick | Century | N/A | Direct Fit | ||
| 2003 | Chevrolet | Impala | 3.4L | V6 | N/A | Direct Fit |
| 2003 | Chevrolet | Monte Carlo | 3.4L | V6 | N/A | Direct Fit |
| 2003 | Pontiac | Grand Prix | 3.1L | V6 | N/A | Direct Fit |
| 2002 | Buick | Century | N/A | Direct Fit | ||
| 2002 | Chevrolet | Impala | 3.4L | V6 | N/A | Direct Fit |
| 2002 | Chevrolet | Monte Carlo | 3.4L | V6 | N/A | Direct Fit |
| 2002 | Pontiac | Grand Prix | 3.1L | V6 | N/A | Direct Fit |
| 2001 | Buick | Century | N/A | Direct Fit | ||
| 2001 | Chevrolet | Impala | 3.4L | V6 | N/A | Direct Fit |
| 2001 | Chevrolet | Monte Carlo | 3.4L | V6 | N/A | Direct Fit |
| 2001 | Pontiac | Grand Prix | 3.1L | V6 | N/A | Direct Fit |
| 2000 | Buick | Century | N/A | Direct Fit | ||
| 2000 | Chevrolet | Impala | 3.4L | V6 | N/A | Direct Fit |
| 2000 | Chevrolet | Monte Carlo | 3.4L | V6 | N/A | Direct Fit |
| 2000 | Pontiac | Grand Prix | 3.1L | V6 | N/A | Direct Fit |
| 1999 | Buick | Century | N/A | Direct Fit | ||
| 1999 | Pontiac | Grand Prix | 3.1L | V6 | N/A | Direct Fit |
| 1998 | Buick | Century | N/A | Direct Fit | ||
| 1998 | Pontiac | Grand Prix | 3.1L | V6 | N/A | Direct Fit |
| 1997 | Buick | Century | N/A | Direct Fit | ||
| 1997 | Pontiac | Grand Prix | 3.1L | V6 | N/A | Direct Fit |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.