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OE Quality
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WalkerPart #: 54981
Walker 54981 Catalytic Converter - Rear
⚙️ 14 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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✅OE Direct Replacement — Bolt-on fit, no modifications needed
📦EPA, Rear
🚗Fitment: Buick and Chevrolet, Impala, LaCrosse, Malibu, and Regal
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Walker 54981 Catalytic Converter - Rear
| Brand | Walker |
| Part Number | 54981 |
| Position | EPA, Rear |
| 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 | 38.5 |
| Air Tube | No |
| Air Tube Count | No |
| Converter Quantity | 1 |
| Inlet 1 Type | 3 bolt welded flange |
| Inlet Type | 3 bolt welded flange |
| Outlet 1 Type | 2 bolt welded flange |
| Outlet Type | 2 bolt welded flange |
| Oxygen Sensor Location | Post catalyst |
| Substrate Material | Ceramic |
This part fits 14 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2016 | Buick | LaCrosse | 2.4L | L4 | Rear | 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 - 31728 and 31537; Ultra Direct Fit Type; EPA |
| 2015 | Buick | LaCrosse | 2.4L | L4 | Rear | 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 - 31728 and 31537; Ultra Direct Fit Type; EPA |
| 2015 | Buick | Regal | 2.4L | L4 | Rear | 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 - 31728 and 31537; Ultra Direct Fit Type; EPA |
| 2014 | Buick | LaCrosse | 2.4L | L4 | Rear | 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 - 31728 and 31537; Ultra Direct Fit Type; EPA |
| 2014 | Buick | Regal | 2.4L | L4 | Rear | 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 - 31728 and 31537; Ultra Direct Fit Type; EPA |
| 2014 | Chevrolet | Impala | 2.4L | L4 | Rear | 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 - 31728 and 31537; Ultra Direct Fit Type; EPA |
| 2014 | Chevrolet | Malibu | 2.4L | L4 | Rear | 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 - 31728 and 31537; Ultra Direct Fit Type; EPA |
| 2013 | Buick | LaCrosse | 2.4L | L4 | Rear | 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 - 31728 and 31537; Ultra Direct Fit Type; EPA |
| 2013 | Buick | Regal | 2.4L | L4 | Rear | 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 - 31728 and 31537; Ultra Direct Fit Type; EPA |
| 2013 | Chevrolet | Malibu | 2.4L | L4 | Rear | 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 - 31728 and 31537; Ultra Direct Fit Type; EPA |
| 2012 | Buick | LaCrosse | 2.4L | L4 | Rear | 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 - 31728 and 31537; Ultra Direct Fit Type; EPA |
| 2012 | Buick | Regal | 2.4L | L4 | Rear | 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 - 31728 and 31537; Ultra Direct Fit Type; EPA |
| 2011 | Buick | LaCrosse | 2.4L | L4 | Rear | 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 - 31728 and 31537; Ultra Direct Fit Type; EPA |
| 2011 | Buick | Regal | 2.4L | L4 | Rear | 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 - 31728 and 31537; Ultra Direct Fit Type; EPA |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
644028644102
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.