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Walker 16656 Catalytic Converter
| Brand | Walker 16656 |
|---|---|
| Mounting Hardware Included | No |
| Universal Or Specific Fit | Specific |
| Grade Type | Regular |
| Body Shape | Round |
| Body Height | 4 |
| Body Length | 8 |
| Body Width | 4 |
| Inlet Quantity | 1 |
| Body Material | Stainless steel |
| Outlet Quantity | 1 |
| California Air Resources Board (CARB) Certified | No |
| Overall Length | 18.75 |
| Air Tube | No |
| Air Tube Count | No |
| Body Height | 4.000 |
| Body Length | 8.000 |
| Body Material | Stainless steel |
| Body Shape | Round |
| Body Width | 4.000 |
| Converter Position | Underbody |
| Converter Quantity | 1 |
| Fitment | Direct fit |
| Inlet 1 Type | 2 bolt welded flange |
| Inlet Connection Type | 2 bolt welded flange |
| Inlet Count | 1 |
| Inlet Diameter 1 | 2.500 |
| Inlet Diameter Designation | Outside diameter |
| Inlet Type | 2 bolt welded flange |
| Max Year Covered | 2016 |
| Min Year Covered | 2012 |
| Product line | EPA |
| Fits | Chevrolet · 5 vehicles |
Direct-fit replacement. Specific fit and bolt-on installation help simplify the job.
Stainless steel body. Resists corrosion while maintaining a durable exhaust flow path.
Ceramic substrate. Engineered for efficient catalytic performance and emissions control.
Cross-references Eastern Catalytic 50503 and Gates 52107 for the same application. See all 2.
Walker EPA Direct-Fit Catalytic Converter 16656
Walker EPA 16656 is a direct-fit catalytic converter built for specific applications on 2012-2016 Chevrolet Impala and Chevrolet Impala Limited models. It uses a stainless steel body with a ceramic substrate and an underbody layout to match the original exhaust routing on covered vehicles.
Key Features
- Direct-fit design for specific vehicle applications
- EPA-compliant replacement for federal-emissions vehicles
- Stainless steel body with ceramic substrate
- Underbody converter position
- 2.5 in. inlet and 2.5 in. outlet connections
- Round body design with 18.75 in. overall length
- Fits OBDII vehicles from 2012 through 2016
Fitment Details
Fits 2012-2013 Chevrolet Impala, N/A. Fits 2014-2016 Chevrolet Impala Limited, N/A. This part cross-references Eastern Catalytic 50503 and Gates 52107 for the same application.
The Walker EPA product line is built for import and domestic OBDII vehicles and focuses on direct-fit replacement coverage with emissions compliance in mind. Part number 16656 is designed for a specific fit, which helps maintain factory-style exhaust alignment on the Chevrolet Impala and Chevrolet Impala Limited applications listed here.
What It Helps Address
- Failed or inefficient catalytic converter operation
- Check engine light concerns related to exhaust aftertreatment
- Exhaust restriction from a worn or damaged converter
- Emissions test failure on covered federal-emissions vehicles
- Fitment issues caused by universal-style replacement parts
Installation Notes
Exhaust gasket is recommended during installation. Additional part 31652 is listed as needed to complete installation. This converter uses a 2-bolt welded flange inlet and pipe connection outlet, with no oxygen sensor port location. Verify federal-emissions fitment before ordering, since this part is not legal for sale or use in California and other CARB-compliant states.
Quality Assurance
Walker designs this EPA converter to meet federal emissions standards while providing a direct-fit replacement for the listed Chevrolet applications. The stainless steel construction and ceramic substrate are selected for standard replacement use on 2012-2016 vehicles covered by the fitment data.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2016 | Chevrolet | Impala Limited | 3.6L | V6 | N/A | Except Partial Zero Emissions Vehicle; Fits Fed. & Calif. Emission Models; Not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Additional Part(s) Needed To Complete Installation: 31652; Ultra Direct Fit Type; EPA |
| 2015 | Chevrolet | Impala Limited | 3.6L | V6 | N/A | Except Partial Zero Emissions Vehicle; Fits Fed. & Calif. Emission Models; Not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Additional Part(s) Needed To Complete Installation: 31652; Ultra Direct Fit Type; EPA |
| 2014 | Chevrolet | Impala Limited | 3.6L | V6 | N/A | Except Partial Zero Emissions Vehicle; Fits Fed. & Calif. Emission Models; Not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Additional Part(s) Needed To Complete Installation: 31652; Ultra Direct Fit Type; EPA |
| 2013 | Chevrolet | Impala | 3.6L | V6 | N/A | Except Partial Zero Emissions Vehicle; Fits Fed. & Calif. Emission Models; Not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Additional Part(s) Needed To Complete Installation: 31652; Ultra Direct Fit Type; EPA |
| 2012 | Chevrolet | Impala | 3.6L | V6 | N/A | Except Partial Zero Emissions Vehicle; Fits Fed. & Calif. Emission Models; Not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Additional Part(s) Needed To Complete Installation: 31652; Ultra Direct Fit Type; EPA |
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