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Walker 84227 Catalytic Converter - Left
Overview of Walker CalCat Catalytic Converter 84227
The Walker CalCat Catalytic Converter 84227 is designed specifically for select Ford, Lincoln, and Mercury vehicles, including the Crown Victoria, Grand Marquis, and Town Car models from 2009 to 2011. This catalytic converter meets California Air Resources Board (CARB) certification standards, ensuring compliance with strict emissions regulations.
- Specific fit for Ford Crown Victoria, Lincoln Town Car, and Mercury Grand Marquis (2009-2011)
- CARB certified for emissions compliance
- Stainless steel body with a standard oval shape
- 10-inch body length with overall length of 36.625 inches
- 2 bolt loose flange inlet with spherical flare and 2 bolt welded flange outlet
- Ceramic substrate material for effective catalytic conversion
- Oxygen sensor located post catalyst for accurate emissions monitoring
Walker CalCat Product Line Details
The CalCat line by Walker focuses on providing catalytic converters that meet regulatory requirements while maintaining durability and performance. The 84227 model is part of this line, offering a specific fit and CARB certification to support emissions control in vehicles such as the Ford Crown Victoria and Lincoln Town Car. CalCat converters utilize quality materials like stainless steel and ceramic substrates to ensure longevity and effective pollutant reduction.
Product Features and Specifications
This catalytic converter features a stainless steel body shaped in a standard oval design, measuring 10 inches in body length and 36.625 inches overall. The inlet uses a 2 bolt loose flange with a spherical flare, while the outlet is equipped with a 2 bolt welded flange, both designed for secure and precise installation. The ceramic substrate inside facilitates the conversion of harmful exhaust gases into less harmful emissions. The oxygen sensor is positioned post catalyst to provide accurate feedback for engine management systems.
Applications and Common Issues Addressed
- Reduces harmful emissions to meet CARB standards
- Replaces clogged or damaged catalytic converters causing poor engine performance
- Resolves check engine light issues related to catalyst efficiency
- Improves exhaust flow and reduces backpressure
- Supports compliance with emissions inspections for 2009-2011 Ford Crown Victoria and similar models
Installation Notes and Tips
Installation requires compatibility with the vehicle’s existing exhaust system flanges: a 2 bolt loose flange with spherical flare at the inlet and a 2 bolt welded flange at the outlet. This part is a specific fit and does not include mounting hardware, so ensure all necessary bolts and gaskets are available prior to installation. Proper oxygen sensor placement post catalyst is critical for accurate emissions monitoring.
Quality Assurance and Warranty
The Walker CalCat 84227 catalytic converter is manufactured with durable stainless steel and a ceramic substrate to provide reliable emissions control. It is CARB certified, meeting stringent environmental standards. Warranty details should be confirmed with the product documentation or manufacturer, as they may vary by application.
| Brand | Walker |
| Part Number | 84227 |
| Position | CalCat, Left |
| Mounting Hardware Included | No |
| Universal Or Specific Fit | Specific |
| Grade Type | Regular |
| Body Shape | Standard oval |
| Inlet Type | 2 bolt loose flange w/spherical flare |
| Outlet Type | 2 bolt welded flange |
| Body Length | 10 |
| Body Length | 10.000 |
| Inlet Quantity | 1 |
| Body Material | Stainless steel |
| Outlet Quantity | 1 |
| California Air Resources Board (CARB) Certified | Yes |
| Substrate Material | Ceramic |
| Overall Length | 36.625 |
| Air Tube | No |
| Air Tube Count | No |
| Body Shape | Standard oval |
| Converter Quantity | 2 |
| Inlet 1 Type | 2 bolt loose flange with spherical flare |
| Inlet Type | 2 bolt loose flange with spherical flare |
| Max Year Covered | 2011 |
| Min Year Covered | 2009 |
| Most Popular Make / Model | Ford crown victoria |
| Most Popular Year | 2011 |
| Outlet 1 Outside Diameter | 1.99 |
| Outlet 1 Outside Diameter | 1.990 |
| Outlet 1 Type | 2 bolt welded flange |
| Outlet Outside Diameter | 1.99 |
| Outlet Type | 2 bolt welded flange |
| Oxygen Sensor Location | Post catalyst |
This part fits 9 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2011 | Ford | Crown Victoria | 4.6L | V8 | Left | CARB Executive Order D-182-72; Engine Family Number (EFN) BFMXV04.6VDF; Legal for sale and use in California and other states requiring CARB-compliant replacement converters. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Additional Part(s) Needed To Complete Installation: 31336; Direct Fit Type; CalCat |
| 2011 | Lincoln | Town Car | 4.6L | V8 | Left | CARB Executive Order D-182-72; Engine Family Number (EFN) BFMXV04.6VDF; Legal for sale and use in California and other states requiring CARB-compliant replacement converters. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Additional Part(s) Needed To Complete Installation: 31336; Direct Fit Type; CalCat |
| 2011 | Mercury | Grand Marquis | 4.6L | V8 | Left | CARB Executive Order D-182-72; Engine Family Number (EFN) BFMXV04.6VDF; Legal for sale and use in California and other states requiring CARB-compliant replacement converters. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Additional Part(s) Needed To Complete Installation: 31336; Direct Fit Type; CalCat |
| 2010 | Ford | Crown Victoria | 4.6L | V8 | Left | CARB Executive Order D-182-72; Engine Family Number (EFN) AFMXV04.6VDF; Legal for sale and use in California and other states requiring CARB-compliant replacement converters. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Additional Part(s) Needed To Complete Installation: 31336; Direct Fit Type; CalCat |
| 2010 | Lincoln | Town Car | 4.6L | V8 | Left | CARB Executive Order D-182-72; Engine Family Number (EFN) AFMXV04.6VDF; Legal for sale and use in California and other states requiring CARB-compliant replacement converters. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Additional Part(s) Needed To Complete Installation: 31336; Direct Fit Type; CalCat |
| 2010 | Mercury | Grand Marquis | 4.6L | V8 | Left | CARB Executive Order D-182-72; Engine Family Number (EFN) AFMXV04.6VDF; Legal for sale and use in California and other states requiring CARB-compliant replacement converters. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Additional Part(s) Needed To Complete Installation: 31336; Direct Fit Type; CalCat |
| 2009 | Ford | Crown Victoria | 4.6L | V8 | Left | CARB Executive Order D-182-72; Engine Family Number (EFN) 9FMXV04.6VDF; Legal for sale and use in California and other states requiring CARB-compliant replacement converters. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Additional Part(s) Needed To Complete Installation: 31336; Direct Fit Type; CalCat |
| 2009 | Lincoln | Town Car | 4.6L | V8 | Left | CARB Executive Order D-182-72; Engine Family Number (EFN) 9FMXV04.6VDF; Legal for sale and use in California and other states requiring CARB-compliant replacement converters. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Additional Part(s) Needed To Complete Installation: 31336; Direct Fit Type; CalCat |
| 2009 | Mercury | Grand Marquis | 4.6L | V8 | Left | CARB Executive Order D-182-72; Engine Family Number (EFN) 9FMXV04.6VDF; Legal for sale and use in California and other states requiring CARB-compliant replacement converters. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Additional Part(s) Needed To Complete Installation: 31336; Direct Fit Type; CalCat |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.