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Walker
EPAWalker 54756 Catalytic Converter
| Brand | Walker 54756 |
|---|---|
| Mounting Hardware Included | No |
| Universal Or Specific Fit | Specific |
| Grade Type | Regular |
| Body Shape | Round |
| Body Height | 4.25 |
| Body Length | 13 |
| Body Width | 4.25 |
| Inlet Quantity | 1 |
| Body Material | Stainless steel |
| Outlet Quantity | 1 |
| California Air Resources Board (CARB) Certified | No |
| Overall Length | 38 |
| Air Tube | No |
| Air Tube Count | No |
| Body Height | 4.250 |
| Body Length | 13.000 |
| Body Material | Stainless steel |
| Body Shape | Round |
| Body Width | 4.250 |
| Converter Quantity | 1 |
| Fitment | Direct fit |
| Inlet 1 Type | 2 bolt welded flange |
| Inlet Connection Type | 2 bolt welded flanges |
| Inlet Count | 1 |
| Inlet Diameter 1 | 2.125 |
| Inlet Diameter Designation | Outside diameter |
| Inlet Type | 2 bolt welded flange |
| Max Year Covered | 2005 |
| Min Year Covered | 1997 |
| Most Popular Make / Model | Pontiac grand am |
| Product line | EPA |
| Fits | Chevrolet, Oldsmobile, and Pontiac · 29 vehicles |
Direct-fit replacement. Specific fit and welded flanges simplify installation.
Stainless steel body. Helps resist corrosion for lasting durability.
Ceramic substrate. Built for efficient emissions control performance.
Cross-references AMS Automotive 4205, AP Exhaust 642547 and AP Exhaust 642730 for the same application. See all 16.
$655.99Free shipping
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Not what you need? See all Catalytic Converter options
Walker EPA 54756 Catalytic Converter
Walker EPA 54756 is a direct-fit catalytic converter built for OBDII-equipped vehicles from 1997-2005. It is engineered for EPA emissions requirements and uses a stainless steel body with a ceramic substrate for dependable exhaust flow and emissions control.
This Walker Ultra EX Direct-Fit Catalytic Converter is made for specific applications, including Pontiac Grand Am, Chevrolet Malibu, Oldsmobile Alero, Oldsmobile Cutlass, and Oldsmobile Achieva fitments. The 54756 part number is a practical replacement choice for drivers needing an EPA-compliant converter for federal-emissions vehicles.
Key Features
- Direct-fit design for specific vehicle applications
- EPA emissions-focused construction for OBDII vehicles
- Stainless steel body with round housing
- Ceramic substrate material
- Post-catalyst oxygen sensor location
- 2-bolt welded flange inlet and 3-bolt welded flange outlet
- Overall length: 38 inches
- Body dimensions: 13 inches long, 4.25 inches high, 4.25 inches wide
Product Details
Walker EPA 54756 is part of the Ultra EX Direct-Fit Catalytic Converter line, which is built for OBDII vehicles and focused on EPA emissions compliance. The design uses an air-gap pipe construction that helps insulate heat between pipes, and the converter is configured for specific fitment rather than universal installation. This makes it a straightforward replacement for the listed applications, including 1999-2005 Pontiac Grand Am, 1997-2003 Chevrolet Malibu, and 1999-2004 Oldsmobile Alero.
This part cross-references AP Exhaust 642547 and Eastern Catalytic 50335 for the same application.
What This Converter Helps Address
- Check engine light concerns related to catalyst efficiency
- Failed emissions testing on federal-emissions vehicles
- Restricted exhaust flow from a worn or damaged converter
- Exhaust leaks at the converter connection points
- Replacement needs for aging OBDII exhaust systems
Installation Notes
- Fits 1999-2005 Pontiac Grand Am, N/A
- Fits 1999-2004 Oldsmobile Alero, N/A
- Fits 1997-2003 Chevrolet Malibu, N/A
- Fits 1997-1999 Oldsmobile Cutlass, N/A
- Fits 1998 Oldsmobile Achieva, N/A
An exhaust gasket is recommended during installation. Verify federal-emissions application details before ordering, since this converter is not legal for sale or use in California or other CARB-compliant states. It is legal in New York and Maine on EPA federal-emissions equipped vehicles only.
Quality Assurance
Walker designs this EPA converter for premium performance and durability in sensitive OBDII applications. The stainless steel housing and direct-fit configuration support consistent replacement quality for the listed vehicle applications.
This part fits 29 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
| Year | Make | Model | Submodel | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2005 | Pontiac | Grand Am | — | 3.4L | V6 | N/A | Air Gap Pipe; Air Space Between Pipes Acts as a Heat Insulator; Appearance may be different than OE Pipe; Optional Extra Precious Metal Loading Type; 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; Ultra EX Direct Fit Type; EPA |
| 2005 | Pontiac | Grand Am | SE | 2.2L | L4 | N/A | Air Gap Pipe; Air Space Between Pipes Acts as a Heat Insulator; Appearance may be different than OE Pipe; Optional Extra Precious Metal Loading Type; 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; Ultra EX Direct Fit Type; EPA |
| 2004 | Oldsmobile | Alero | — | 3.4L | V6 | N/A | Air Gap Pipe; Air Space Between Pipes Acts as a Heat Insulator; Appearance may be different than OE Pipe; Optional Extra Precious Metal Loading Type; 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; Ultra EX Direct Fit Type; EPA |
| 2004 | Pontiac | Grand Am | — | 2.2L | L4 | N/A | Air Gap Pipe; Air Space Between Pipes Acts as a Heat Insulator; Appearance may be different than OE Pipe; Optional Extra Precious Metal Loading Type; 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; Ultra EX Direct Fit Type; EPA |
| 2004 | Pontiac | Grand Am | — | 3.4L | V6 | N/A | Air Gap Pipe; Air Space Between Pipes Acts as a Heat Insulator; Appearance may be different than OE Pipe; Optional Extra Precious Metal Loading Type; 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; Ultra EX Direct Fit Type; EPA |
| 2003 | Chevrolet | Malibu | — | 3.1L | V6 | N/A | Air Gap Pipe; Air Space Between Pipes Acts as a Heat Insulator; Appearance may be different than OE Pipe; Optional Extra Precious Metal Loading Type; 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; Ultra EX Direct Fit Type; EPA |
| 2003 | Oldsmobile | Alero | — | 3.4L | V6 | N/A | Air Gap Pipe; Air Space Between Pipes Acts as a Heat Insulator; Appearance may be different than OE Pipe; Optional Extra Precious Metal Loading Type; 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; Ultra EX Direct Fit Type; EPA |
| 2003 | Pontiac | Grand Am | — | 2.2L | L4 | N/A | Air Gap Pipe; Air Space Between Pipes Acts as a Heat Insulator; Appearance may be different than OE Pipe; Optional Extra Precious Metal Loading Type; 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; Ultra EX Direct Fit Type; EPA |
| 2003 | Pontiac | Grand Am | — | 3.4L | V6 | N/A | Air Gap Pipe; Air Space Between Pipes Acts as a Heat Insulator; Appearance may be different than OE Pipe; Optional Extra Precious Metal Loading Type; 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; Ultra EX Direct Fit Type; EPA |
| 2002 | Chevrolet | Malibu | — | 3.1L | V6 | N/A | Air Gap Pipe; Air Space Between Pipes Acts as a Heat Insulator; Appearance may be different than OE Pipe; Optional Extra Precious Metal Loading Type; 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; Ultra EX Direct Fit Type; EPA |
| 2002 | Oldsmobile | Alero | — | 3.4L | V6 | N/A | Air Gap Pipe; Air Space Between Pipes Acts as a Heat Insulator; Appearance may be different than OE Pipe; Optional Extra Precious Metal Loading Type; 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; Ultra EX Direct Fit Type; EPA |
| 2002 | Pontiac | Grand Am | — | 2.2L | L4 | N/A | Air Gap Pipe; Air Space Between Pipes Acts as a Heat Insulator; Appearance may be different than OE Pipe; Optional Extra Precious Metal Loading Type; 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; Ultra EX Direct Fit Type; EPA |
| 2002 | Pontiac | Grand Am | — | 3.4L | V6 | N/A | Air Gap Pipe; Air Space Between Pipes Acts as a Heat Insulator; Appearance may be different than OE Pipe; Optional Extra Precious Metal Loading Type; 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; Ultra EX Direct Fit Type; EPA |
| 2001 | Chevrolet | Malibu | — | 3.1L | V6 | N/A | Air Gap Pipe; Air Space Between Pipes Acts as a Heat Insulator; Appearance may be different than OE Pipe; Optional Extra Precious Metal Loading Type; 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; Ultra EX Direct Fit Type; EPA |
| 2001 | Oldsmobile | Alero | — | 3.4L | V6 | N/A | Air Gap Pipe; Air Space Between Pipes Acts as a Heat Insulator; Appearance may be different than OE Pipe; Optional Extra Precious Metal Loading Type; 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; Ultra EX Direct Fit Type; EPA |
| 2001 | Pontiac | Grand Am | — | 3.4L | V6 | N/A | Air Gap Pipe; Air Space Between Pipes Acts as a Heat Insulator; Appearance may be different than OE Pipe; Optional Extra Precious Metal Loading Type; 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; Ultra EX Direct Fit Type; EPA |
| 2000 | Chevrolet | Malibu | — | 3.1L | V6 | N/A | Air Gap Pipe; Air Space Between Pipes Acts as a Heat Insulator; Appearance may be different than OE Pipe; Optional Extra Precious Metal Loading Type; 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; Ultra EX Direct Fit Type; EPA |
| 2000 | Oldsmobile | Alero | — | 3.4L | V6 | N/A | Air Gap Pipe; Air Space Between Pipes Acts as a Heat Insulator; Appearance may be different than OE Pipe; Optional Extra Precious Metal Loading Type; 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; Ultra EX Direct Fit Type; EPA |
| 2000 | Pontiac | Grand Am | — | 3.4L | V6 | N/A | Air Gap Pipe; Air Space Between Pipes Acts as a Heat Insulator; Appearance may be different than OE Pipe; Optional Extra Precious Metal Loading Type; 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; Ultra EX Direct Fit Type; EPA |
| 1999 | Chevrolet | Malibu | — | 3.1L | V6 | N/A | Air Gap Pipe; Air Space Between Pipes Acts as a Heat Insulator; Appearance may be different than OE Pipe; Optional Extra Precious Metal Loading Type; 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; Ultra EX Direct Fit Type; EPA |
| 1999 | Oldsmobile | Alero | — | 3.4L | V6 | N/A | Air Gap Pipe; Air Space Between Pipes Acts as a Heat Insulator; Appearance may be different than OE Pipe; Optional Extra Precious Metal Loading Type; 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; Ultra EX Direct Fit Type; EPA |
| 1999 | Oldsmobile | Cutlass | — | 3.1L | V6 | N/A | Air Gap Pipe; Air Space Between Pipes Acts as a Heat Insulator; Appearance may be different than OE Pipe; Optional Extra Precious Metal Loading Type; with Federal Emission System; 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; Ultra EX Direct Fit Type; EPA |
| 1999 | Pontiac | Grand Am | — | 3.4L | V6 | N/A | Air Gap Pipe; Air Space Between Pipes Acts as a Heat Insulator; Appearance may be different than OE Pipe; Optional Extra Precious Metal Loading Type; 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; Ultra EX Direct Fit Type; EPA |
| 1998 | Chevrolet | Malibu | — | 3.1L | V6 | N/A | Air Gap Pipe; Air Space Between Pipes Acts as a Heat Insulator; Appearance may be different than OE Pipe; Optional Extra Precious Metal Loading Type; 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; Ultra EX Direct Fit Type; EPA |
| 1998 | Oldsmobile | Achieva | — | 3.1L | V6 | N/A | Air Gap Pipe; Air Space Between Pipes Acts as a Heat Insulator; Appearance may be different than OE Pipe; Optional Extra Precious Metal Loading Type; with Federal Emission System; 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; Ultra EX Direct Fit Type; EPA |
| 1998 | Oldsmobile | Cutlass | — | 3.1L | V6 | N/A | Air Gap Pipe; Air Space Between Pipes Acts as a Heat Insulator; Appearance may be different than OE Pipe; Optional Extra Precious Metal Loading Type; with Federal Emission System; 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; Ultra EX Direct Fit Type; EPA |
| 1997 | Chevrolet | Malibu | — | 3.1L | V6 | N/A | Air Gap Pipe; Air Space Between Pipes Acts as a Heat Insulator; Appearance may be different than OE Pipe; Optional Extra Precious Metal Loading Type; 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; Ultra EX Direct Fit Type; EPA |
| 1997 | Oldsmobile | Cutlass | GLS | 3.1L | V6 | N/A | Air Gap Pipe; Air Space Between Pipes Acts as a Heat Insulator; Appearance may be different than OE Pipe; Optional Extra Precious Metal Loading Type; with Federal Emission System; 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; Ultra EX Direct Fit Type; EPA |
| 1997 | Oldsmobile | Cutlass | Base | 3.1L | V6 | N/A | Air Gap Pipe; Air Space Between Pipes Acts as a Heat Insulator; Appearance may be different than OE Pipe; Optional Extra Precious Metal Loading Type; with Federal Emission System; 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; Ultra EX Direct Fit Type; EPA |
| No rows match your filter. | |||||||
Directly replaces or cross-references 16 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
AMS Automotive — 4205AP Exhaust — 642547AP Exhaust — 642730Eastern Catalytic — 50335Eastern Catalytic — 50346Gates — 23520Gates — 51996MAHLE — 4863Nissens — 940863StrongArm — 483150254642520942205942831942863944205