Introduction
This manual provides essential information for the installation, operation, maintenance, and troubleshooting of your Walker Ultra EPA 16882 Direct Fit Catalytic Converter. Please read this manual thoroughly before installation and retain it for future reference.

Image: The Walker Ultra EPA 16882 Direct Fit Catalytic Converter, showcasing its robust construction and direct-fit design.
Safety Information
Working with automotive exhaust systems requires caution. Always observe the following safety guidelines:
- Ensure the vehicle is securely supported on jack stands or a lift before working underneath.
- Allow the exhaust system to cool completely before beginning work to prevent burns.
- Wear appropriate personal protective equipment (PPE), including safety glasses, gloves, and hearing protection.
- Work in a well-ventilated area to avoid inhaling exhaust fumes.
- Disconnect the vehicle's battery before performing any electrical work.
- Consult a professional mechanic if you are unsure about any step of the installation process.
What's in the Box
Upon opening the package, verify that all components are present and undamaged:
- One Catalytic Converter (Walker Ultra EPA 16882)
- (Note: Gaskets and hardware may be sold separately depending on the specific application.)
Installation (Setup)
The Walker Ultra EPA 16882 is designed for direct-fit installation, minimizing the need for specialized fabrication.
- Preparation: Park the vehicle on a level surface and engage the parking brake. Allow the exhaust system to cool. Lift the vehicle safely using a hoist or jack stands.
- Remove Old Converter: Locate the existing catalytic converter. Depending on the vehicle, this may involve unbolting flanges or cutting pipes. Note the orientation of oxygen sensors if present.
- Clean Mating Surfaces: Ensure all mating flange surfaces are clean and free of old gasket material or corrosion to ensure a proper seal.
- Install New Converter: Position the Walker 16882 catalytic converter. Its direct-fit design means it aligns with OE-style hangers, brackets, and routings. Secure it using new gaskets and hardware (not included).
- Connect Oxygen Sensors: If applicable, reinstall any oxygen sensors into the new converter. Ensure wiring is routed correctly and not pinched.
- Check for Leaks: Once installed, start the vehicle and check for any exhaust leaks around the new connections. Tighten bolts as necessary.

Image: Illustrates the "Bolt Off Bolt On" design, emphasizing ease of installation without specialized tools or welding.

Image: A mechanic installing a catalytic converter, demonstrating the typical under-vehicle work involved.

Image: Text overlay "Tested for Assured Fit" indicating the product's precision engineering for vehicle-specific applications.
Important Note: This catalytic converter is EPA compliant for OBDII vehicles (1996 and newer). It is not legal for sale or use in California, Colorado, or New York. Legal in Maine on EPA Federal Emission Equipped Vehicles only. Consult your state's aftermarket converter regulations for details.

Image: The "EPA Compliant" logo, with a disclaimer about state-specific regulations for catalytic converter use.
Operation
The Walker Ultra EPA 16882 Catalytic Converter functions automatically as part of your vehicle's exhaust system. Its primary role is to convert harmful pollutants in exhaust gases into less toxic substances through chemical reactions.
- Emissions Reduction: The internal washcoat and precious metal load are optimized to reduce tailpipe emissions effectively, meeting EPA standards.
- Check Engine Light: Designed with OE-style high-technology washcoat, this converter helps prevent the illumination of the Check Engine Light due to emissions-related codes.
- No Break-In Required: This converter is ready to operate immediately after installation, thanks to its application-specific shell design and mat compression.

Image: Text overlay "Keeps the Check Engine Light Off" highlighting the converter's ability to manage emissions codes.

Image: Text overlay "No Break-In Required" indicating immediate operational readiness after installation.
Maintenance
Catalytic converters are generally maintenance-free components. However, proper vehicle maintenance is crucial for their longevity:
- Engine Health: Ensure your engine is running efficiently. Misfires, excessive oil consumption, or rich fuel mixtures can damage the converter.
- Regular Inspections: Periodically inspect the exhaust system for leaks, damage, or loose connections.
- Heat Shields: The converter features aluminized heat shields (when originally equipped) to protect the undercarriage. Ensure these are intact and properly secured.
Troubleshooting
If you experience issues after installing your catalytic converter, consider the following:
- Check Engine Light On:
- Verify all oxygen sensors are properly connected and functioning.
- Check for exhaust leaks at all connection points.
- Ensure the vehicle's engine is in good running condition; a faulty engine component can trigger emissions codes.
- Clear the codes with an OBD-II scanner after addressing any issues.
- Rattling Noise:
- This could indicate a loose heat shield or internal damage to the converter. Inspect the heat shields for proper attachment.
- Reduced Engine Performance:
- While rare with a new converter, a restricted exhaust flow can cause this. Ensure there are no kinks or blockages in the exhaust system.
If problems persist, it is recommended to consult a certified automotive technician.
Specifications
| Attribute | Detail |
|---|---|
| Brand | Walker |
| Model | Ultra EPA |
| Item Model Number | 16882 |
| Manufacturer Part Number | 16882 |
| Item Weight | 6.18 pounds |
| Package Dimensions | 17.01 x 8.31 x 7.01 inches |
| Exterior Finish | Machined |
| Compliance | EPA Compliant (for OBDII vehicles, 1996 and newer; not legal for sale/use in CA, CO, NY; legal in ME on EPA Federal Emission Equipped Vehicles only) |
Warranty and Support
For specific warranty information regarding your Walker Ultra EPA 16882 Catalytic Converter, please refer to the documentation provided with your purchase or visit the official Walker website. For technical support or inquiries, contact Walker customer service.
Manufacturer: DRiV Incorporated
Brand Website: www.walkerexhaust.com (Note: This is a general link and may not be the exact product page.)





