1. Introduction
This manual provides essential information for the installation, operation, and maintenance of the Walker Ultra EPA 16854 Direct Fit Catalytic Converter. This component is designed to meet stringent emissions standards for OBDII vehicles, ensuring effective emissions control and reliable performance. Its direct-fit design simplifies the installation process, making it suitable for professional automotive technicians. Constructed from durable stainless steel, this converter is built for longevity and consistent performance in various operating conditions.
Image of the Walker Ultra EPA 16854 Direct Fit Catalytic Converter, showing its overall shape and connection points.
2. Product Features
- EPA Compliant: Designed for use on OBDII vehicles manufactured in 1996 and newer, meeting federal emissions standards. Consult local regulations for specific state requirements.
- Direct-Fit Design: Engineered for a bolt-on replacement, featuring OE-style hangers, brackets, routings, and heat shields. This design facilitates straightforward installation without requiring specialized fabrication or welding.
- Assured Performance: Utilizes OE-style high-technology washcoat and an optimal precious metal load to achieve the necessary reduction in tailpipe emissions for the specified vehicle application.
- Strong and Durable Construction: Features thick OE-style flanges, hangers, and brackets for enhanced strength and long-term durability.
- OE-Style Heat Shields: Includes aluminized heat shields, where originally equipped, to protect the vehicle's undercarriage from heat generated by the converter.
Image illustrating the 'No Break-In Required' feature of the catalytic converter, highlighting its readiness for immediate operation due to application-specific design.
3. Compatibility
This Walker Ultra EPA 16854 Catalytic Converter is specifically designed for the following vehicle applications:
- Cadillac SRX: 2012-2016 models
Before installation, verify compatibility using the vehicle's year, make, model, engine, and trim information to ensure correct fitment.
4. What's in the Box
The package for the Walker Ultra EPA 16854 Catalytic Converter typically includes:
- One (1) Walker Catalytic Converter (Model 16854)
Additional installation hardware (gaskets, bolts, nuts) may be required and is often sold separately or reused from the original installation, depending on the specific vehicle and existing components.
5. Installation (Setup)
Installation of a catalytic converter requires specialized tools and knowledge. It is highly recommended that this component be installed by a certified automotive professional to ensure proper fitment, function, and compliance with all applicable regulations.
General Installation Guidelines:
- Safety First: Ensure the vehicle is securely lifted and supported. Allow the exhaust system to cool completely before beginning work. Wear appropriate personal protective equipment.
- Preparation: Disconnect the vehicle's battery. Remove any sensors (e.g., oxygen sensors) from the old converter.
- Removal of Old Converter: Carefully unbolt or cut the old catalytic converter from the exhaust system. Take care not to damage adjacent components.
- Inspection: Inspect the surrounding exhaust components, hangers, and mounting points for damage or wear. Replace any worn parts as necessary.
- Installation of New Converter: Position the Walker 16854 converter. Its direct-fit design should align with existing mounting points. Use new gaskets and hardware as recommended by the manufacturer. Torque all fasteners to the vehicle manufacturer's specifications.
- Sensor Reinstallation: Reinstall oxygen sensors into the new converter. Ensure wiring is routed correctly and not pinched.
- Final Checks: Verify all connections are secure and there are no exhaust leaks. Reconnect the battery.
Image depicting a technician installing an exhaust component, illustrating the direct-fit design for ease of installation.
Close-up image of the robust, OE-style flanges of the catalytic converter, designed for secure and durable connections.
6. Operation
The Walker Ultra EPA 16854 Catalytic Converter functions as a critical component of your vehicle's exhaust system, converting harmful pollutants in engine exhaust gases into less toxic substances. Once installed, the converter operates automatically as part of the vehicle's emissions control system.
This converter is designed to maintain optimal performance and prevent the illumination of the "Check Engine Light" due to emissions-related codes, provided the vehicle's engine and other emissions components are functioning correctly.
Image emphasizing the catalytic converter's ability to keep the 'Check Engine Light' off, attributed to optimal washcoat technology for emissions control.
Image displaying the 'CARB Compliant' logo for Walker CalCat Converters, indicating compliance for OBDII vehicles 1996 and newer, and non-OBD 1995 and older, legal for sale in specific states.
7. Maintenance
Catalytic converters are generally maintenance-free components. However, their longevity and performance are directly linked to the overall health of your vehicle's engine and exhaust system. Regular vehicle maintenance is crucial:
- Engine Tune-ups: Ensure your engine receives regular tune-ups, including spark plug replacement, air filter changes, and fuel system cleaning, to prevent unburnt fuel from reaching and damaging the converter.
- Oxygen Sensor Checks: Have oxygen sensors checked periodically. Faulty sensors can lead to incorrect air-fuel mixtures, which can negatively impact converter efficiency and lifespan.
- Exhaust System Inspection: Periodically inspect the entire exhaust system for leaks, damage, or loose connections that could affect converter performance.
8. Troubleshooting
If you experience issues after installing the catalytic converter, consider the following common troubleshooting steps. It is recommended to consult a qualified mechanic for diagnosis and repair.
- Check Engine Light (CEL) On: If the CEL illuminates after installation, it may indicate an issue with the converter itself or other components in the emissions system (e.g., oxygen sensors, engine misfires). A diagnostic scan tool can retrieve trouble codes to pinpoint the problem.
- Reduced Engine Performance: A clogged or damaged catalytic converter can restrict exhaust flow, leading to reduced engine power, poor acceleration, and decreased fuel efficiency. This often requires professional diagnosis.
- Rattling Noise: A rattling sound from under the vehicle, especially when starting or accelerating, could indicate a broken internal substrate within the converter.
- Exhaust Leaks: Check for any exhaust leaks around the converter's connections. Leaks can affect sensor readings and overall emissions performance.
Note: The Walker Ultra EPA 16854 is designed to be EPA compliant. However, state-specific regulations may vary. Ensure your vehicle meets all local emissions requirements.
9. Specifications
| Attribute | Detail |
|---|---|
| Brand | Walker |
| Model Number | 16854 |
| Vehicle Service Type | Car |
| Compatibility | Cadillac SRX (2012-2016) |
| Dimensions (L x W x H) | 35 x 9.88 x 5.25 inches |
| Item Weight | 7.5 pounds |
| UPC | 086387168540 |
| Manufacturer | Tenneco (Dynomax, Walker, Thrush) |
| Automotive Fit Type | Vehicle Specific Fit |
| EPA Compliance | For OBDII vehicles, 1996 and newer |
10. Warranty and Support
For detailed information regarding the product warranty, please refer to the official documentation provided by Walker or visit the manufacturer's official website. Warranty terms typically cover manufacturing defects and may vary based on purchase location and specific product. For technical support or inquiries, please contact Walker customer service directly through their official channels.
