OE Quality
60-Day Returns

OP Converters OPCG4033 Catalytic Converter
Reliable Catalytic Converter for Chevrolet and GMC Vans
The OP Converters OPCG4033 catalytic converter is designed specifically for Chevrolet Express 1500, Express 2500, GMC Savana 1500, and Savana 2500 models. This part ensures your vehicle meets emission standards while maintaining optimal exhaust flow.
- Direct fit for Chevrolet Express 1500 and 2500 models
- Compatible with GMC Savana 1500 and 2500 vans
- Meets or exceeds OEM emission requirements
- Durable construction for long-lasting performance
- Part number OPCG4033 for precise identification
Product Details and Compatibility
The OP Converters OPCG4033 catalytic converter is engineered to replace the factory unit on select Chevrolet and GMC full-size vans. It is designed to fit the exhaust system of Express 1500 and 2500, as well as Savana 1500 and 2500 models, ensuring proper alignment and secure installation. This catalytic converter helps reduce harmful emissions by converting exhaust gases into less harmful substances, supporting compliance with environmental regulations.
Common Applications and Problem Solving
- Restores proper exhaust emissions control on Chevrolet Express and GMC Savana vans
- Resolves check engine light issues related to catalytic converter failure
- Improves exhaust flow and engine performance when replacing a clogged converter
- Addresses failed emissions tests due to catalytic converter inefficiency
- Replaces damaged or rusted catalytic converters on older vehicles
Installation Notes and Tips
Installation of the OPCG4033 catalytic converter requires basic mechanical skills and proper tools. Ensure the vehicle is cooled down before starting work. Verify the part number matches your vehicle’s requirements. It is recommended to inspect exhaust gaskets and hardware during installation, although these are not included. Proper torque specifications should be followed to avoid leaks.
Quality Assurance and Warranty
OP Converters manufactures the OPCG4033 catalytic converter to meet industry standards for durability and emissions performance. While specific warranty details are not provided, OP Converters products typically come with a limited warranty against defects in materials and workmanship. Consult the manufacturer or distributor for exact warranty terms.
This part fits 18 vehicles. Search below:
| Year | Make | Model | Submodel | Body Type | # Doors | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|---|---|---|
| 2008 | Chevrolet | Express 1500 | Base | Standard Cargo Van | 4 Door | 5.3L | V8 | FLEX | N/A | Direct Fit |
| 2008 | GMC | Savana 1500 | 5.3L | V8 | FLEX | N/A | Direct Fit | |||
| 2007 | Chevrolet | Express 1500 | 5.3L | V8 | FLEX | N/A | Direct Fit | |||
| 2007 | GMC | Savana 1500 | 5.3L | V8 | FLEX | N/A | Direct Fit | |||
| 2006 | Chevrolet | Express 1500 | 4.3L | V6 | N/A | Direct Fit | ||||
| 2006 | GMC | Savana 1500 | Standard Cargo Van | 4 Door | 4.3L | V6 | N/A | Direct Fit | ||
| 2005 | Chevrolet | Express 1500 | 4.3L | V6 | N/A | Direct Fit | ||||
| 2005 | Chevrolet | Express 2500 | 4.3L | V6 | N/A | Direct Fit | ||||
| 2005 | GMC | Savana 1500 | 4.3L | V6 | N/A | Direct Fit | ||||
| 2005 | GMC | Savana 2500 | 4.3L | V6 | N/A | Direct Fit | ||||
| 2004 | Chevrolet | Express 1500 | 5.3L | V8 | N/A | Federal, 47-State Only, Not legal for sale in CA, NY or ME | ||||
| 2004 | Chevrolet | Express 2500 | 4.3L | V6 | N/A | Direct Fit | ||||
| 2004 | GMC | Savana 1500 | 4.3L | V6 | N/A | Direct Fit | ||||
| 2004 | GMC | Savana 2500 | 4.3L | V6 | N/A | Direct Fit | ||||
| 2003 | Chevrolet | Express 1500 | 4.3L | V6 | N/A | Direct Fit | ||||
| 2003 | Chevrolet | Express 2500 | 4.3L | V6 | N/A | Direct Fit | ||||
| 2003 | GMC | Savana 1500 | 4.3L | V6 | N/A | Direct Fit | ||||
| 2003 | GMC | Savana 2500 | 4.3L | V6 | N/A | Direct Fit |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.